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Journal articles on the topic 'Radiologic image'

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Author: Grafiati
Published: 11 March 2023

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1

Chen, Chin-Tu. "Radiologic Image Registration." Academic Radiology 10, no. 3 (March 2003): 239–41. http://dx.doi.org/10.1016/s1076-6332(03)80096-x.

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2

Huang, H. K., S. L. Lou, P. S. Cho, D. J. Valentino, A. W. Wong, K. K. Chan, and B. K. Stewart. "Radiologic image communication methods." American Journal of Roentgenology 155, no. 1 (July 1990): 183–86. http://dx.doi.org/10.2214/ajr.155.1.2112842.

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3

Wong, S., L. Zaremba, D. Gooden, and H. K. Huang. "Radiologic image compression-a review." Proceedings of the IEEE 83, no. 2 (1995): 194–219. http://dx.doi.org/10.1109/5.364466.

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4

Gillespy, Thurman, and Alan H. Rowberg. "Displaying radiologic images on pesonal computers: Image processing and analysis." Journal of Digital Imaging 7, no. 2 (May 1994): 51–60. http://dx.doi.org/10.1007/bf03168422.

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5

Boddu, Prajwal, Vamsi Parimi, Michale Taddonio, Joshua Robert Kane, and Anjana Yeldandi. "Pathologic and Radiologic Correlation of Adult Cystic Lung Disease: A Comprehensive Review." Pathology Research International 2017 (February 8, 2017): 1–17. http://dx.doi.org/10.1155/2017/3502438.

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The presence of pulmonary parenchymal cysts on computed tomography (CT) imaging presents a significant diagnostic challenge. The diverse range of possible etiologies can usually be differentiated based on the clinical setting and radiologic features. In fact, the advent of high-resolution CT has facilitated making a diagnosis solely on analysis of CT image patterns, thus averting the need for a biopsy. While it is possible to make a fairly specific diagnosis during early stages of disease evolution by its characteristic radiological presentation, distinct features may progress to temporally converge into relatively nonspecific radiologic presentations sometimes necessitating histological examination to make a diagnosis. The aim of this review study is to provide both the pathologist and the radiologist with an overview of the diseases most commonly associated with cystic lung lesions primarily in adults by illustration and description of pathologic and radiologic features of each entity. Brief descriptions and characteristic radiologic features of the various disease entities are included and illustrative examples are provided for the common majority of them. In this article, we also classify pulmonary cystic disease with an emphasis on the pathophysiology behind cyst formation in an attempt to elucidate the characteristics of similar cystic appearances seen in various disease entities.
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6

Kinnunen, J. "Image Quality in Radiography of Midfacial Trauma." Acta Radiologica 29, no. 4 (July 1988): 395–99. http://dx.doi.org/10.1177/028418518802900403.

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Image quality in radiography of midfacial trauma was studied in 618 patients treated for midfacial injury. The visibility of key anatomic areas was related to essential technical factors influencing image quality as well as to the radiologic diagnostic performance. Regression analysis revealed that the visibility of the key anatomic areas was significantly dependent on the technical factors. However, the radiologic diagnostic performance was not significantly dependent on the visibility of the key anatomic areas. The results indicate that image quality was not a limiting factor for radiologic diagnostic performance in midfacial trauma.
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7

Katsu et al., Toshihiko. "Radiologic Findings in Spine X-ray Image." Japanese Journal of Radiological Technology 64, no. 1 (2008): 73–83. http://dx.doi.org/10.6009/jjrt.64.73.

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8

Fleury, A., A. Ambrun, C. Ferber-Viart, S. Zaouche, C. Dubreuil, and S. Tringali. "One radiologic image may hide behind another." European Annals of Otorhinolaryngology, Head and Neck Diseases 128, no. 5 (November 2011): 259–61. http://dx.doi.org/10.1016/j.anorl.2011.05.001.

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9

Richardson, M. L., M. S. Frank, and E. J. Stern. "Digital image manipulation: what constitutes acceptable alteration of a radiologic image?" American Journal of Roentgenology 164, no. 1 (January 1995): 228–29. http://dx.doi.org/10.2214/ajr.164.1.7998545.

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10

McEachern, James D., David A. Leswick, Grant W. Stoneham, Karen L. Mohr, and James E. Stempien. "Radiological errors in the Canadian Journal of Emergency Medicine." CJEM 16, no. 05 (September 2014): 361–69. http://dx.doi.org/10.2310/8000.2013.131183.

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ABSTRACTObjectives:To systematically evaluate the accuracy of text descriptions and labeling of radiologic images published in theCanadian Journal of Emergency Medicine (CJEM). Error detection by radiologists and emergency physicians and the clinical significance and educational value of these errors were assessed. Errors were also correlated with radiologist involvement in publication and imaging modality.Methods:Thirty-three issues of CJEM were examined from January 2003 to May 2008. Electronic copies of all radiologic images published were obtained with their caption and description from the text. Identifying information was removed to present images in an anonymous fashion. Images were presented to two radiologists who, working in consensus, critically appraised each image and accompanying text. Images were then presented to two emergency department physicians who, working in consensus, critically appraised each image and accompanying text. All images with errors detected by either radiology or emergency physicians were then discussed to determine if errors would have affected clinical management or educational value. The emergency physicians also identified “underlabeled” images where it was felt that further labeling would enhance their educational value.Results:Forty-five articles with 82 images were obtained. At least one error was observed in 18 (40%) articles and 20 (24%) images. Two errors were present in three images, resulting in 23 errors. Of the 23 errors, 17 were image description errors and 6 were labeling errors. Five errors were detected by both radiology and emergency physicians, whereas 15 were detected only by radiologists and 3 were detected only by emergency physicians. Of these errors, 12 (52%) were rated as potentially affecting both clinical management and educational value, 5 (22%) as only affecting educational value, and 6 (26%) as nonsignificant. Radiologists were involved in six articles, including 12 images that contained no errors. There was no official radiologist involvement in 39 articles, including 70 images, 18 (26%) of which contained errors. In addition, 26 images were identified by emergency physicians as potentially benefiting from enhanced labeling to improve educational value.Conclusions:Radiologic images published in the CJEM are generally of high quality; however, 23 errors were found in 82 images, 18 (78%) of which were rated as potentially affecting clinical management, educational value, or both. Radiologist involvement in the publication process may be of assistance as no errors were seen in articles that included radiologists as authors.
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11

Hong, Yong Tae, and Ki Hwan Hong. "Radiologic Features of Papillary Carcinoma in the Second Branchial Cleft Cyst." Ear, Nose & Throat Journal 98, no. 5 (April 8, 2019): 295–98. http://dx.doi.org/10.1177/0145561319840571.

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Clinically, it may be very difficult to differentiate between benign branchial cleft cyst (BCC) and malignant BCC with papillary carcinoma preoperatively. Radiological features were reviewed retrospectively between benign BCC and malignant BCC with papillary carcinoma using computed tomography (CT) and magnetic resonance (MR) images. All patients had only a mass on the right upper lateral neck without lesion in the thyroid gland. Two patients had a mass in the upper medial part of BCC on CT images and one patient showed a well-circumscribed mass in the upper portion of BCC on MR image. Two patients received BCC removal only and one patient underwent total thyroidectomy including removal of BCC. As results, most cases of papillary carcinoma in the BCC were detected incidentally after surgical resection of BCC. However, we can differentiate between benign BCC and malignant BCC with primary papillary carcinoma by carefully reviewing radiologic images before surgery.
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12

Gillespy, Thurman, and Alan H. Rowberg. "Displaying radiologic images on personal computers: Image storage and compression—Part 2." Journal of Digital Imaging 7, no. 1 (February 1994): 1–12. http://dx.doi.org/10.1007/bf03168473.

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13

Gillespy, Thurman, and Alan H. Rowberg. "Displaying radiologic images on personal computers: Image storage and compression: Part 1." Journal of Digital Imaging 6, no. 4 (November 1993): 197–204. http://dx.doi.org/10.1007/bf03168527.

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14

Huang, H. K., R. L. Arenson, W. P. Dillon, S. L. Lou, T. Bazzill, and A. W. Wong. "Asynchronous transfer mode technology for radiologic image communication." American Journal of Roentgenology 164, no. 6 (June 1995): 1533–36. http://dx.doi.org/10.2214/ajr.164.6.7754909.

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15

Mankovich, N. J., R. K. Taira, P. S. Cho, and H. K. Huang. "Operational radiologic image archive on digital optical disks." Radiology 167, no. 1 (April 1988): 139–42. http://dx.doi.org/10.1148/radiology.167.1.3347715.

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16

Staib, Lawrence H., and Martin Styner. "Advances in Radiologic Image Analysis from MICCAI 2005." Academic Radiology 13, no. 9 (September 2006): 1053–54. http://dx.doi.org/10.1016/j.acra.2006.06.013.

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17

Larsen, Rasmus, and Wiro Niessen. "Advances in Radiologic Image Analysis From MICCAI 2006." Academic Radiology 14, no. 11 (November 2007): 1296–97. http://dx.doi.org/10.1016/j.acra.2007.09.002.

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18

Nilsson, U., U. Nyman, and M. Nilsson. "Teletransmission of Radiographic Images." Acta Radiologica. Diagnosis 27, no. 3 (May 1986): 357–60. http://dx.doi.org/10.1177/028418518602700318.

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A digital system for transmission of images over telephone lines using a 256×256×6 bits matrix provided for communication between a county hospital and a university hospital is presented. During a three-month period radiologic diagnostic problems encountered in 62 patients (computed tomography in 46 and conventional radiography in 16) were referred by transmitting selected images from each examination. Transmission of computed tomograms was performed without significant degradation of image quality and there was no loss of diagnostic information. Deterioration of image quality was noticed when conventional films especially those of the chest, were digitized and transmitted, though in no instance were they non-diagnostic. The consultations gave valuable information to the transmitting radiologist in approximately 50 per cent of the cases. Review by the consulted radiologists of all original films in each of the examinations 6 months later did not improve the diagnostic results. Thus, a few carefully selected images, digitized and transmitted over telephone lines, may be sufficient for adequate consultation. References
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19

Jang, Hyun-Jung, Kyung Soo Lee, and Joungho Han. "Clinical Image. Intravascular Lymphomatosis of the Lung: Radiologic Findings." Journal of Computer Assisted Tomography 22, no. 3 (May 1998): 427–29. http://dx.doi.org/10.1097/00004728-199805000-00015.

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20

ERKONEN, WILLIAM E., MARK A. ALBANESE, WILBUR L. SMITH, and NICHOLAS J. PANTAZIS. "Effectiveness of Teaching Radiologic Image Interpretation in Gross Anatomy." Investigative Radiology 27, no. 3 (March 1992): 264–66. http://dx.doi.org/10.1097/00004424-199203000-00016.

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21

Bharath, Karthik, Sebastian Kurtek, Arvind Rao, and Veerabhadran Baladandayuthapani. "Radiologic image‐based statistical shape analysis of brain tumours." Journal of the Royal Statistical Society: Series C (Applied Statistics) 67, no. 5 (March 15, 2018): 1357–78. http://dx.doi.org/10.1111/rssc.12272.

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22

Gillespy, T., and AH Rowberg. "Erratum to: Displaying radiologic images on personal computers: Image storage and comipression—Part 2." Journal of Digital Imaging 7, no. 2 (May 1994): 60. http://dx.doi.org/10.1007/bf03168423.

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23

Cohn, Aaron I., Perry L. Miller, Paul R. Fisher, Pradeep G. Mutalik, and Henry A. Swett. "Knowledge-based radiologic image retrieval using axes of clinical relevance." Computers and Biomedical Research 23, no. 3 (June 1990): 199–221. http://dx.doi.org/10.1016/0010-4809(90)90017-7.

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24

Chiang, Chen-Hua, Chi-Lun Weng, and Hung-Wen Chiu. "Automatic classification of medical image modality and anatomical location using convolutional neural network." PLOS ONE 16, no. 6 (June 11, 2021): e0253205. http://dx.doi.org/10.1371/journal.pone.0253205.

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Modern radiologic images comply with DICOM (digital imaging and communications in medicine) standard, which, upon conversion to other image format, would lose its image detail and information such as patient demographics or type of image modality that DICOM format carries. As there is a growing interest in using large amount of image data for research purpose and acquisition of large amount of medical image is now a standard practice in the clinical setting, efficient handling and storage of large amount of image data is important in both the clinical and research setting. In this study, four classes of images were created, namely, CT (computed tomography) of abdomen, CT of brain, MRI (magnetic resonance imaging) of brain and MRI of spine. After converting these images into JPEG (Joint Photographic Experts Group) format, our proposed CNN architecture could automatically classify these 4 groups of medical images by both their image modality and anatomic location. We achieved excellent overall classification accuracy in both validation and test sets (> 99.5%), specificity and F1 score (> 99%) in each category of this dataset which contained both diseased and normal images. Our study has shown that using CNN for medical image classification is a promising methodology and could work on non-DICOM images, which could potentially save image processing time and storage space.
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Jamil, Ahmad Mochtar, Muslim Andala Putra, and Muhammad Anas. "Adobe Photoshop Express Application Enhances the Diagnosis of X-Ray Thorax of Covid-19 Patient." Indonesian Journal of Medical Sciences and Public Health 1, no. 2 (October 19, 2021): 54–61. http://dx.doi.org/10.11594/ijmp.01.02.05.

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Covid-19 is a new infectious viral illness. The first one appeared in Wuhan, and within two months, it became a pandemic. Medical diagnosis is confirmed by fever, cough, shortness of breath, combined with neutrophil ratio lymphocyte analysis and chest x-ray or chest ­C.T. radiology imaging, with a ground-glass appearance. C.T. scans are not widely available in hospitals in Indonesia. Many hospitals only own x-ray for covid-19 as radiologic diagnostic imaging. With digital imaging capabilities, Due to the similarity of applications such as the radiological workstation, Adobe Photoshop Express will improve the capacity to diagnose Covid-19 from a chest x-ray. Adobe Photoshop Express has outstanding digital processing capabilities to enhance the presentation of images so that the efficiency of diagnosing plain x-ray thorax image cases with Covid-19 becomes easier and more manageable.
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26

Yang, Nathaniel W. "Technique of Multi-Planar CT Image Reconstruction for the Evaluation of Superior Semicircular Canal Dehiscence Syndrome." Philippine Journal of Otolaryngology-Head and Neck Surgery 26, no. 2 (December 3, 2011): 42–44. http://dx.doi.org/10.32412/pjohns.v26i2.587.

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Superior semicircular canal dehiscence (SSCD) syndrome is an unusual cause of vertigo that was first identified by Minor in 1998. The patients initially described by Minor presented with vertigo, oscillopsia, and/or dysequilibrium related to sound, changes in middle ear pressure, and/or changes in intracranial pressure due to an absence of the bony layer that normally covers the superior semicircular canal.1 Subsequent clinical studies have shown that the condition may lead to a variety of vestibular and/or auditory symptoms that mimic other otologic disorders. These symptoms include autophony, ear blockage or fullness, conductive hearing loss, pulsatile tinnitus, dizziness or vertigo with head movements, and general disequilibrium.2 In a patient with the appropriate symptoms, the diagnosis of superior semicircular canal dehiscence syndrome rests on the identification of a dehiscence in the bone overlying the semicircular canal on coronal high-resolution temporal bone computed tomographic scans (white arrowhead, Figure 1). It must be emphasized that due to the low specificity of images taken at 1.0- and 1.5-mm collimation, current radiologic literature advocates the use of coronal reformatted images based on submillimeter (0.4 – 0.6-mm) collimated axial scans. It must also be stressed that although reformatted coronal images are sufficient for the radiologic evaluation of SSCD in most cases, oblique reformatted images in the Stenver and Pöschl planes are necessary in equivocal cases.3 When operative management becomes necessary, these views are indispensable for proper surgical planning. The images in oblique planes of reconstruction can be created on radiologic imaging software that allows multiplanar reconstruction (MPR) of the raw axial CT image data set. This software allows the original data set to be simultaneously viewed in the standard sagittal, coronal and axial orthogonal planes of orientation (Figure 2) and manipulated into non-orthogonal or arbitary planes of orientation (oblique and double-oblique). The images in this article were made using syngo CT (version 2010B) software (Siemens AG, Berlin and München). This software has a set of toggle buttons in the 3D task window that allow manipulation of the primary image data set (Figure 3). The orthogonal axial image at the level of the superior semicircular canal is used as the primary reference image (Figure 4). The image has been zoomed in and panned using the Zoom/Pan function to center the image on the superior semicircular canal to be viewed. With the Free View Mode activated, aligning the first reference line in the primary reference image to the long axis of the petrous bone and centered between the arms of the superior semicircular canal (white bar, Figure 4) creates a secondary reference image in the Stenver plane (Figure 5). Aligning the second reference line in the primary reference image to the short axis of the petrous bone and running through both arms of the superior semicircular canal (black arrow, Figure 4) creates the tertiary image in the Pöschl plane that allows visualization of the superior semicircular canal as a complete ring (Figure 6). As the superior semicircular canal may not be perfectly vertically oriented in the orthogonal axial reference image, adjustments in the vertical reference line of the secondary reference image in the Stenver plane to run along the long vertical axis of the superior semicircular canal are made (white bar, Figure 5). This will allow perfect visualization of the ring of the superior semicircular canal and any dehiscences of the overlying bone in the Pöschl plane (white arrowhead, Figure 6). Imaging of the inner ear structures in non-orthogonal planes of orientation are not usually provided to the clinician by radiology centers in the Philippines. With a small investment in time and effort at the radiology workstation, it is possible for the clinician to view the inner ear structures, especially the semicircular canals, in their actual anatomic planes. This will allow for the accurate diagnosis and managment of less common, but treatable causes of otologic symptoms.
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27

Yokoyama, K., N. Nakashima, Y. Takata, K. Tokuue, and M. Furuse. "Pictures for radiologic reports: use of a hand-held image scanner." American Journal of Roentgenology 153, no. 2 (August 1989): 427. http://dx.doi.org/10.2214/ajr.153.2.427.

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Faqih, S. Al. "1.249 HEMICHOREA AFTER STROKE: CLINICO-RADIOLOGIC CORRELATION WITH MAGNETIC RESONANCE IMAGE." Parkinsonism & Related Disorders 18 (January 2012): S59. http://dx.doi.org/10.1016/s1353-8020(11)70307-8.

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29

Shariff, Faiz U., Jorge L. Uribe, Lawerence Greenawald, Mohammad F. Shaikh, Andres E. Castellanos, Brendan McCracken, Douglas Parrillo, Patricia A. Shewokis, D. Scott Lind, and Richard Goelz. "Radiologic image enhancement to improve detection of retained surgical items (RSI)." Journal of the American College of Surgeons 221, no. 4 (October 2015): e125. http://dx.doi.org/10.1016/j.jamcollsurg.2015.08.233.

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30

Idowu, Michael O., Linday Bonner Hardy, Rhona J. Souers, and Raouf E. Nakhleh. "Pathologic Diagnostic Correlation With Breast Imaging Findings: A College of American Pathologists Q-Probes Study of 48 Institutions." Archives of Pathology & Laboratory Medicine 136, no. 1 (January 1, 2012): 53–60. http://dx.doi.org/10.5858/arpa.2011-0217-cp.

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Context.—Correlation of radiologic and pathologic findings is important for optimal management of patients with image-guided breast biopsies. Objectives.—To (1) evaluate the rates of radiologic and pathologic correlation in breast needle core biopsies, (2) evaluate laboratory and radiology practices associated with greater correlation rates, and (3) determine the rates at which the lack of radiologic-pathologic correlation is documented in pathology reports. Design.—The study was offered and conducted as a College of American Pathologists voluntary Q-Probes program. Participants in this study retrospectively reviewed 30 consecutive, initial, diagnostic needle core biopsy cases performed for abnormal radiologic findings. If 12 months of accessioned cases were reviewed without identifying 30 qualifying cases, participants stopped the retrospective review and included all cases identified. For each case or specimen, the participants provided detailed information about the radiologic and pathologic findings. Results.—In aggregate, a radiologic-pathologic correlation was found in 94.9% (1328 of 1399) of the cases reviewed, based on the participants' judgments. Significant differences in the correlation rates existed when cases were discussed at an interdepartmental, multidisciplinary conference (P < .001). No significant differences were found in the correlation rates of the following: whether surgeons or radiologists performed the biopsy, whether cores with calcifications were identified by any method, and whether the laboratory had one or more designated breast pathologists. Conclusions.—Participation in a multidisciplinary breast conference is useful in radiologic-pathologic correlation. Active involvement by pathologists in correlating pathologic and radiologic findings is important.
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Gurando, A. V., O. V. Shuliga-Nedayhlebova, V. V. Telniy, and D. V. Pominchuk. "Secondary breast lymphoma. A case report." HEALTH OF WOMAN, no. 3(129) (April 30, 2018): 54–57. http://dx.doi.org/10.15574/hw.2018.129.54.

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In this article, in a specific clinical case, the features of the image of secondary lymphoma of the breast with the use of a multimodal clinical-radiological approach were determined and the main literature sources for increasing awareness of this rare but very important pathology are given. Radiologic features of breast lymphomas are non-pathognomonic and may mimic different forms of invasive breast cancer. However, radiologists and clinicians should be aware of this rare pathology to avoid a misinterpretation. The multimodal clinical and radiological approach can be as close as possible to the diagnosis of braest lymphoma, and will pave the way for further diagnostics as biopsy and histopathological evaluation remain the gold-standard for diagnosis. Key words: breast limphoma, digital breast tomosynthesis, full-field digital mammography, breast ultrasound, Selenia Hologic, core needle biopsy.
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Govindaraju, Aswath, Deepti H. Vijayakumar, Raghavendra Tirupathi, Jaffar A. Al-Tawfiq, and Ali A. Rabaan. "326. Radiologic Findings of COVID-19 Associated Mucormycosis (CAM) from India." Open Forum Infectious Diseases 8, Supplement_1 (November 1, 2021): S268—S269. http://dx.doi.org/10.1093/ofid/ofab466.528.

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Abstract Background The unique feature of the second wave of the COVID -19 pandemic in India has been the alarming surge of acute invasive fungal infection among COVID -19 patients. The increased incidence of rhino-orbito-cerebral mucormycosis is a matter of concern, as this fulminant infection has high morbidity and mortality. Hence, it is imperative to understand it’s imaging features, for early diagnosis, staging and treatment. Methods We systematically reviewed 32 COVID-19 cases with imaging diagnosis of acute invasive fungal rhino-sinusitis or rhino-orbital-cerebral disease between March to May 2021. These patients underwent contrast MRI of the paranasal sinus, orbit and brain. Contrast enhanced CT chest and paranasal sinuses were done as needed. Results The age group ranged between 30 to 71 yrs with male preponderance. The most common predisposing factors were intravenous steroid therapy and supplemental oxygen. All cases were confirmed by fungal culture and most common was Mucor. The rhino-orbito-cerebral mucormycosis was staged as below In our study we found that the most common site in the nasal cavity was the middle turbinate /meatus and the earliest sign was non-enhancing / “black” turbinate. Premaxillary and retroantral fat necrosis was the earliest sign of soft tissue invasion. Spread via the sphenopalatine foramen and pterygopalatine fossa was more common than bony erosions. Orbital cellulitis and optic neuritis were the most common among stage 3 cases. Of patients with CNS involvement, the most common were cavernous sinus thrombosis and trigeminal neuritis. Two patients with pulmonary mucormycosis showed large necrotic cavitary lesions, giving the characteristic “bird’s nest” appearance. Figure 1. Black turbinate Contrast enhanced coronal T1 FS images of paranasal sinuses shows necrotic non-enhancing right superior and middle turbinates (*) Figure 2: Axial contrast enhanced T1 FS image showing necrotic non enhancing premaxillary (arrowhead) and retroantral fat (straight arrow) walled off by thin enhancing rim. Figure 3: Contrast enhanced axial T1 FS images of paranasal sinuses shows necrotic non-enhancing left middle meatus spreading along sphenopalatine foramen in to pterygopalatine fossa (arrow head) Conclusion The mortality rate was 20% in our study. In our short term follow up, 30 % of recovered patients had relapse on imaging due to incomplete clearance and partial antifungal treatment. High clinical suspicion and low imaging threshold are vital for early Mucormycosis detection in COVID-19 patients. Familiarity with early imaging signs is critical to prevent associated morbidity /mortality. Figure 4: Contrast enhanced coronal T1 FS and diffusion weighted images shows necrotic non-enhancing left middle meatus with left orbital cellulitis (*) and optic neuritis (white arrow) Figure 5. Bird’s nest Axial CT chest image in lung window shows necrotic right upper lobe cavity with internal septations and debris on a background of surrounding COVID-19 changes. Disclosures All Authors: No reported disclosures
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Shimizu, Kensaku, Tsuneo Matsumoto, Gouji Miura, Ayame Shimizu, Hitomi Awaya, Naofumi Matsunaga, Isao Ariyoshi, and Kimio Isiglo. "Clinical Image. Hermansky-Pudlak Syndrome with Diffuse Pulmonary Fibrosis: Radiologic-Pathologic Correlation." Journal of Computer Assisted Tomography 22, no. 2 (March 1998): 249–51. http://dx.doi.org/10.1097/00004728-199803000-00017.

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34

Burgess, Arthur. "Image quality, the ideal observer, and human performance of radiologic decision tasks." Academic Radiology 2, no. 6 (June 1995): 522–26. http://dx.doi.org/10.1016/s1076-6332(05)80411-8.

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Suther, Kathrine Rydén, Einar Hopp, Bjarne Smevik, Arnt Eltvedt Fiane, Harald Lauritz Lindberg, Stig Larsen, and Charlotte de Lange. "Can visual analogue scale be used in radiologic subjective image quality assessment?" Pediatric Radiology 48, no. 11 (July 4, 2018): 1567–75. http://dx.doi.org/10.1007/s00247-018-4187-8.

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Goske, Marilyn J., Ellen Charkot, Tracy Herrmann, Susan D. John, Thalia T. Mills, Gregory Morrison, and Susan N. Smith. "Image Gently: Challenges for radiologic technologists when performing digital radiography in children." Pediatric Radiology 41, no. 5 (April 14, 2011): 611–19. http://dx.doi.org/10.1007/s00247-010-1957-3.

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37

Petersen, Tim-Ole, Martin Reinhardt, Jochen Fuchs, Dieter Gosch, Alexey Surov, Patrick Stumpp, Thomas Kahn, and Michael Moche. "Analysis of Patients’ X-ray Exposure in 146 Percutaneous Radiologic Gastrostomies." RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren 189, no. 09 (June 13, 2017): 820–27. http://dx.doi.org/10.1055/s-0043-109690.

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Purpose Analysis of patient´s X-ray exposure during percutaneous radiologic gastrostomies (PRG) in a larger population. Materials and Methods Data of primary successful PRG-procedures, performed between 2004 and 2015 in 146 patients, were analyzed regarding the exposition to X-ray. Dose-area-product (DAP), dose-length-product (DLP) respectively, and fluoroscopy time (FT) were correlated with the used x-ray systems (Flatpanel Detector (FD) vs. Image Itensifier (BV)) and the necessity for periprocedural placement of a nasogastric tube. Additionally, the effective X-ray dose for PRG placement using fluoroscopy (DL), computed tomography (CT), and cone beam CT (CBCT) was estimated using a conversion factor. Results The median DFP of PRG-placements under fluoroscopy was 163 cGy*cm2 (flat panel detector systems: 155 cGy*cm2; X-ray image intensifier: 175 cGy*cm2). The median DLZ was 2.2 min. Intraprocedural placement of a naso- or orogastric probe (n = 68) resulted in a significant prolongation of the median DLZ to 2.5 min versus 2 min in patients with an already existing probe. In addition, dose values were analyzed in smaller samples of patients in which the PRG was placed under CBCT (n = 7, median DFP = 2635 cGy*cm2), or using CT (n = 4, median DLP = 657 mGy*cm). Estimates of the median DFP and DLP showed effective doses of 0.3 mSv for DL-assisted placements (flat panel detector 0.3 mSv, X-ray image converter 0.4 mSv), 7.9 mSv using a CBCT – flat detector, and 9.9 mSv using CT. This corresponds to a factor 26 of DL versus CBCT, or a factor 33 of DL versus CT. Conclusion In order to minimize X-ray exposure during PRG-procedures for patients and staff, fluoroscopically-guided interventions should employ flat detector systems with short transmittance sequences in low dose mode and with slow image frequency. Series recordings can be dispensed with. The intraprocedural placement of a naso- or orogastric probe significantly extends FT, but has little effect on the overall dose of the intervention. Due to the significantly higher X-ray exposure, the use of a CBCT as well as PRG-placements using CT should be limited to clinically absolutely necessary exceptions with strict indication. Key Points Citation Format
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38

F. Cerbito, Adonis, Kerwin Paul J. Gonzales, and Ed Lapastora. "Learning Preferences and Competencies of Radiologic Technology Interns on General Radiography." International Multidisciplinary Research Journal 2, no. 4 (December 14, 2020): 186–98. http://dx.doi.org/10.54476/iimrj327.

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Radiologic Education has substantially changed throughout the years and has certain advancements that have left the country catching on. It has transitioned from analog to digital imaging, which considerably left developing countries behind. Consequently, general radiography practices are assumed to differ from the previous years. Employing a sequential explanatory research design, the study looked into the radiologic interns' competencies in specific parameters such as preparation, patient care and management; positioning; and image acquisition and processing. Using a researchermade questionnaire, 50 radiologic interns from four academic year batches were invited to participate in the study. Interpreted responses are cross-referenced through the interview data that were gathered from 12 participants, equally representing each batch. The study also probed the interns' general learning preference using the VARK questionnaire. Both of the questionnaires underwent Cronbach Alpha Test of Reliability. The data was probed and analyzed using Regression Analysis; to which the research findings gave an inference that the learning preferences positively affect the clinical competencies of the radiologic interns, providing the institution a broader perspective on improving the interns’ educative capacity. It also strengthens the Radiologic Technology program, giving importance to the three generated themes: Rehearsals of procedures, Application more than Theories, and Demonstration of Skills.
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39

Hall, Jeffery A., and Hui Ming Khoo. "Robotic-Assisted and Image-Guided MRI-Compatible Stereoelectroencephalography." Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques 45, no. 1 (November 8, 2017): 35–43. http://dx.doi.org/10.1017/cjn.2017.240.

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AbstractBackground: Stereoelectroencephalography has been in regular use at the Montreal Neurological Institute since 1972. The technique has been in constant evolution to incorporate advances in materials, imaging, and robotics technology. MRI-compatible electrodes were introduced in 2007 and robotics in 2011. Here we report on the technique, safety, and advantages of our current method of stereoelectroencephalography implantation. Methods: We retrospectively reviewed all patients who underwent stereoelectroencephalography by the senior author. Technical, clinical, and radiological complications, and postimplantation outcomes were analyzed. Only patients implanted with MRI-compatible electrodes were included to review MRI abnormalities with electrodes in situ. Results: A total of 53 patients were implanted with 550 electrodes (average=10.4 per patient), for an average duration of 14.6 days. There was no mortality, infection, or new neurologic deficit. Two patients had a superficial screw plunge without clinical consequence. Four patients demonstrated asymptomatic MRI abnormalities (7.54% per patient, or 0.72% per electrode). MRI with electrodes in situ was used for neuronavigation in all 29 who underwent resection and yielded a histopathological diagnosis of focal cortical dysplasia in 15 MRI-negative patients. Conclusions: The technique of stereoelectroencephalography described here was associated with no clinical morbidity although not without technical complications or radiologic (MRI) abnormalities. We should therefore remain vigilant in refining the technique and minimizing the number of electrodes required to answer a well-developed hypothesis regarding the epileptogenic zone. The use of MRI-compatible electrodes allowed neuronavigation using the images with the electrodes in situ, which was useful to tailor the eventual definitive resection and in localizing MRI-negative lesions.
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Lyu, Ah-Ra, Sung Jae Park, Dami Kim, Ho Yun Lee, and Yong-Ho Park. "Radiologic features of vascular pulsatile tinnitus – suggestion of optimal diagnostic image workup modalities." Acta Oto-Laryngologica 138, no. 2 (October 9, 2017): 128–34. http://dx.doi.org/10.1080/00016489.2017.1385847.

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41

Gorham, Sinead, and Patrick C. Brennan. "Impact of focal spot size on radiologic image quality: A visual grading analysis." Radiography 16, no. 4 (November 2010): 304–13. http://dx.doi.org/10.1016/j.radi.2010.02.007.

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42

Benmouna Imane, Mouimen Soukaina, Slaoui Aziz, and Pr Baidada Aziz. "Intracystic papillary carcinoma of the breast: Report case and literature review." International Journal of Frontiers in Science and Technology Research 2, no. 2 (June 30, 2022): 019–23. http://dx.doi.org/10.53294/ijfstr.2022.2.2.0035.

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Intracystic papillary carcinoma (IPC) of the breast is a rare malignant tumour, found mainly but not exclusively in elderly women. IPC may be asymptomatic or presents with a palpable mass or blood-stained nipple discharge. Radiologic manifestations of IPC are not specific. On ultrasonography, it can be a pure cyst, a mixed image, or a solid mass. Histologic features of the tumor include cellular proliferations surrounding fibrovascular cores, with or without invasion. The mainstay of treatment is breast-conserving surgery or mastectomy. Sentinel node biopsy could be considered in invasive cases. Adjuvant radiotherapy and/or endocrine therapy is considered in appropriate cases. Through the observation of a 58-year-old patient, we report the epidemiological, clinical and radiological data of papillary breast carcinoma.
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Reimão, Rubens, Elio Giacomo Papaiz, and Luiz Fernando Papaiz. "Pierre Robin sequence and obstructive sleep apnea." Arquivos de Neuro-Psiquiatria 52, no. 4 (December 1994): 554–59. http://dx.doi.org/10.1590/s0004-282x1994000400017.

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The case of a 12-year-old female patient with Pierre Robin sequence is reported, in which reduction of the pharyngeal airway leads to obstructive sleep apnea syndrome (OSAS) and excessive daytime sleepiness. Radiological evaluation, computerized tomography and magnetic resonance image showed bilateral temporomandibular ankylosis. Cephalometric data evidenced marked reduction of the posterior airway space. Three all-night polysomnographic evaluations detected severe OSAS with decrease in oxygen saturation. The Multiple Sleep Latency Test (MSLT) perfomed on two separate days objectively quantified the excessive daytime sleepiness with short sleep latencies; stage REM was not present. Polysomnography, MSLT and thorough radiologic studies, in this case, made it possible to determine the severity of OSAS, the site of obstruction, and the associated malformations.
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44

Piraner, Maria, Kelly D’Amico, Lawrence L. Gilliland, Mary S. Newell, and Michael A. Cohen. "Pure Radial Scars Do Not Require Surgical Excision When Concordant and Benign at Image-guided Breast Biopsy." Journal of Breast Imaging 3, no. 5 (August 14, 2021): 572–80. http://dx.doi.org/10.1093/jbi/wbab048.

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Abstract Objective To determine the best management option (surgical excision versus imaging surveillance) following the diagnosis of pure radial scars (RSs) and RSs with associated additional high-risk lesions (HRLs) encountered on percutaneous core-needle breast biopsy. Methods An IRB–approved retrospective review of the breast imaging reporting system database was performed to identify all cases of pure RS alone or RS plus an additional HRL (papilloma, atypia, lobular neoplasia) diagnosed on core-needle biopsy, from 2007 to 2016, at four breast centers in our institution. Cases with associated malignancy, discordant radiologic-pathologic results, or those lost to follow-up were excluded. The remaining cases were evaluated to determine results of either subsequent surgical excision or long-term follow-up imaging (minimum of two years). Additional data recorded included clinical presentation, breast density, personal and family history of breast cancer, lesion imaging characteristics, and biopsy method. Results The study cohort included 111 patients with 111 lesions: 56.8% (63/111) with RS alone (pure) and 43.2% (48/111) with RS plus additional HRL(s). Out of the 63 radiologic-pathologic concordant pure RSs, there were no upgrades to malignancy in 51 subsequent surgical excisions or 12 long-term surveillance cases (0/63, 0%). Out of the 48 RSs plus additional HRL(s), there were 2 upgrades to malignancy (2/48, 4.2%). Conclusion Cases of radiologic-pathologic concordant pure RS diagnosed at core-needle biopsy do not require surgical excision. On the other hand, surgical excision should be considered for RS plus additional HRLs diagnosed at core-needle biopsy.
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Vo, Luan Nguyen Quang, Andrew Codlin, Thuc Doan Ngo, Thang Phuoc Dao, Thuy Thi Thu Dong, Huong Thi Lan Mo, Rachel Forse, et al. "Early Evaluation of an Ultra-Portable X-ray System for Tuberculosis Active Case Finding." Tropical Medicine and Infectious Disease 6, no. 3 (September 4, 2021): 163. http://dx.doi.org/10.3390/tropicalmed6030163.

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X-ray screening is an important tool in tuberculosis (TB) prevention and care, but access has historically been restricted by its immobile nature. As recent advancements have improved the portability of modern X-ray systems, this study represents an early evaluation of the safety, image quality and yield of using an ultra-portable X-ray system for active case finding (ACF). We reported operational and radiological performance characteristics and compared image quality between the ultra-portable and two reference systems. Image quality was rated by three human readers and by an artificial intelligence (AI) software. We deployed the ultra-portable X-ray alongside the reference system for community-based ACF and described TB care cascades for each system. The ultra-portable system operated within advertised specifications and radiologic tolerances, except on X-ray capture capacity, which was 58% lower than the reported maximum of 100 exposures per charge. The mean image quality rating from radiologists for the ultra-portable system was significantly lower than the reference (3.71 vs. 3.99, p < 0.001). However, we detected no significant differences in TB abnormality scores using the AI software (p = 0.571), nor in any of the steps along the TB care cascade during our ACF campaign. Despite some shortcomings, ultra-portable X-ray systems have significant potential to improve case detection and equitable access to high-quality TB care.
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Bach Cuadra, Meritxell, Julien Favre, and Patrick Omoumi. "Quantification in Musculoskeletal Imaging Using Computational Analysis and Machine Learning: Segmentation and Radiomics." Seminars in Musculoskeletal Radiology 24, no. 01 (January 28, 2020): 50–64. http://dx.doi.org/10.1055/s-0039-3400268.

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AbstractAlthough still limited in clinical practice, quantitative analysis is expected to increase the value of musculoskeletal (MSK) imaging. Segmentation aims at isolating the tissues and/or regions of interest in the image and is crucial to the extraction of quantitative features such as size, signal intensity, or image texture. These features may serve to support the diagnosis and monitoring of disease. Radiomics refers to the process of extracting large amounts of features from radiologic images and combining them with clinical, biological, genetic, or any other type of complementary data to build diagnostic, prognostic, or predictive models. The advent of machine learning offers promising prospects for automatic segmentation and integration of large amounts of data. We present commonly used segmentation methods and describe the radiomics pipeline, highlighting the challenges to overcome for adoption in clinical practice. We provide some examples of applications from the MSK literature.
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Oh, Hyun Seok. "The Practical Multidisciplinary Management of the Indeterminate Biliary Stricture and/or Dilatation -Radiological Differential Diagnosis: Challenging but Essential-." Korean Journal of Pancreas and Biliary Tract 28, no. 1 (January 31, 2023): 15–18. http://dx.doi.org/10.15279/kpba.2023.28.1.15.

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The most important aspect of the imaging role for indeterminate bile duct stricture is to make a differential diagnosis on whether the stricture is highly likely to be malignant or benign. Compared to benign stricture, malignant stricture is longer, thicker, and has indistinct outer border and irregularity of the lumen in contrastenhanced computed tomography and magnetic resonance (MR). Also, in the contrast-enhanced portal phase, malignant stricture has a stronger enhancement than the liver parenchyma. There are studies to differentiate between malignant and benign stricture in diffusion weighted image, a functional MR image, but there remains controversial. Sometimes, malignant biliary stricture may be caused by bile duct invasion of gallbladder cancer, pancreatic cancer, hepatocellular carcinoma, biliary metastasis, and lymphoma. Among the potential causes of indeterminate biliary stricture, the characteristics of multifocal biliary stricture mainly suggest benign sclerosing cholangitis, and various external compression factors that cause biliary stricture can be differentiated by radiologic imaging. There are causes of biliary dilatation without obstructive lesion, radiologic diagnosis can be made by considering various characteristics.
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Rajendran, Rahul, Kevan Iffrig, Deepak K. Pruthi, Allison Wheeler, Brian Neuman, Dharam Kaushik, Ahmed M. Mansour, Karen Panetta, Sos Agaian, and Michael A. Liss. "Initial Evaluation of Computer-Assisted Radiologic Assessment for Renal Mass Edge Detection as an Indication of Tumor Roughness to Predict Renal Cancer Subtypes." Advances in Urology 2019 (April 23, 2019): 1–8. http://dx.doi.org/10.1155/2019/3590623.

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Objective. To develop software to assess the potential aggressiveness of an incidentally detected renal mass using images. Methods. Thirty randomly selected patients who underwent nephrectomy for renal cell carcinoma (RCC) had their images independently reviewed by engineers. Tumor “Roughness” was based on image algorithm of tumor topographic features visualized on computed tomography (CT) scans. Univariant and multivariant statistical analyses are utilized for analysis. Results. We investigated 30 subjects that underwent partial or radical nephrectomy. After excluding poor image-rendered images, 27 patients remained (benign cyst = 1, oncocytoma = 2, clear cell RCC = 15, papillary RCC = 7, and chromophobe RCC = 2). The mean roughness score for each mass is 1.18, 1.16, 1.27, 1.52, and 1.56 units, respectively (p<0.004). Renal masses were correlated with tumor roughness (Pearson’s, p=0.02). However, tumor size itself was larger in benign tumors (p=0.1). Linear regression analysis noted that the roughness score is the most influential on the model with all other demographics being equal including tumor size (p=0.003). Conclusion. Using basic CT imaging software, tumor topography (“roughness”) can be quantified and correlated with histologies such as RCC subtype and could lead to determining aggressiveness of small renal masses.
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Bayramoglu, Zuhal, Rejin Kebudi, Ravza Yilmaz, Sema Buyukkapu Bay, Abut Kebudi, Hasan Karanlik, Ayca Iribas, et al. "Primary Rhabdomyosarcoma of the Breast: Imaging Findings and Literature Review." Breast Care 13, no. 4 (2018): 293–97. http://dx.doi.org/10.1159/000487750.

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Background: Primary breast rhabdomyosarcoma (RMS) can occur in children. There is a lack of knowledge regarding radiologic findings and added diffusion-weighted magnetic resonance imaging (MRI) features of RMS in the literature. Case Report: A 12-year-old girl was diagnosed with primary alveolar RMS of the breast. Gray scale ultrasound revealed posterior acoustic enhancement behind a well-circumscribed, multilobulated hypoechoic mass. Doppler ultrasound revealed increased peripheral and central vascularity. Hypointense septations on T2-weighted image exhibiting more enhancement than the stroma on late gadolinium-enhanced images were striking within a hyperintense mass. A hyperintense hemorrhagic focus on T1-weighted image was present in the absence of any necrosis. Avid enhancement on early postcontrast images proceeding from the periphery to the center was depicted. Conclusion: A rapidly enlarging mass with an echogenic peripheral rim together with posterior acoustic enhancement on gray scale ultrasound, intense vascularity on Doppler ultrasound, axillary lymphadenopathy, and satellite nodules on MRI should raise suspicion. Enhancing central and peripheral septations are suggestive of RMS. Dynamic contrast-enhanced MRI in suspected cases can provide valuable data in the differential diagnosis.
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Yang, Nathaniel W. "Pneumolabyrinth: Radiologic Evidence of Labyrinthine Injury." Philippine Journal of Otolaryngology-Head and Neck Surgery 23, no. 2 (December 27, 2008): 49–50. http://dx.doi.org/10.32412/pjohns.v23i2.749.

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A U.S. serviceman presented with a three month history of unsteadiness on ambulation and increasing episodes of vertigo whenever he turned his head rapidly to the right. He had previously been injured in a bomb blast while stationed in Iraq four months prior to consultation. Aside from multiple soft tissue and bone trauma, he had also experienced vertigo and nearly complete deafness in the right ear immediately after the blast. Medical records indicated the presence of a traumatic perforation of the right tympanic membrane and spontaneous nystagmus on initial emergency medical assessment after the incident. Physical examination on consultation revealed bilaterally intact eardrums, a positive right head impulse test, and a normal Romberg test. Audiometry showed a severe right SNHL. A presumptive diagnosis of a persistent perilymph fistula secondary to inner ear barotrauma was entertained, and supported by findings on temporal bone CT imaging. Figure 1 is the axial CT image of the patient's inner ear at the level of the basal turn of the cochlea. Two linear lucencies are visible within the cochlea (arrowheads). These have the same signal characteristics as the normal external auditory canal and middle ear space. As such, they indicate the presence of air within the cochlea – a condition termed pneumolabyrinth. Figure 2 shows a normal cochlea at the same level for comparison. Note the uniform soft tissue density within the cochlear lumen, representing the endocochlear fluids. The lucency in the round window niche (thin arrow) also represents air, but this is a normal finding. Barotrauma from blast injuries and traumatic tympanic membrane perforations may cause perilymph fistulas. This is probably due to a sudden pressure wave transmitted through the tympanic membrane that results in an inward rupture of the round window membrane or an inward displacement of the stapedial footplate.1 Pneumolabyrinth has been identified in patients suffering from perilymph fistulas due to barotraumas,2 and therefore can bolster the diagnosis when identified in the appropriate clinical setting. It has also been identified in patients with perilymph fistulas from other causes, including iatrogenic stapes fractures during mastoid surgery, temporal bone fractures, cholesteatoma, neoplasms of the temporal bone, stapedectomy, and after cochlear implantation.3
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