Thematische Bibliographien / Pelvis radiographs

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Auswahl der wissenschaftlichen Literatur zum Thema „Pelvis radiographs“

Autor: Grafiati

Veröffentlicht am 25. Juni 2021

Zuletzt aktualisiert am 12. Februar 2022

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Zeitschriftenartikel zum Thema "Pelvis radiographs"

Kumar, A., W. W. Chau, A. L. H. Hung, J. K. T. Wong, B. K. W. Ng und J. C. Y. Cheng. „Gonadal shield: is it the Albatross hanging around the neck of developmental dysplasia of the hip research?“ Journal of Children's Orthopaedics 12, Nr. 6 (Dezember 2018): 606–13. http://dx.doi.org/10.1302/1863-2548.12.180133.

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Purpose Prospective randomized controlled trials and long-term studies are essential future directions for building evidence-based practices in developmental dysplasia of the hip (DDH), however, sufficient attrition in data (> 20%) can introduce bias deteriorating research quality. Pelvic radiography is synonymous with DDH assessment and so are Gonadal Shield (GS) recommendations with pelvic radiography. Nonetheless, losses to diagnostic information and inadequate protection have been increasingly implicated to GS usage, with significantly worse implications in female patients. Understandably for DDH, a disease with 80% female prevalence, the impact of GS usage on quality of radiographs and readability of radiological data may be drastic. This study aims to objectively define the implications of GS recommendations in DDH patients. Methods Pelvis radiographs of all DDH patients under the hip surveillance programme at a tertiary care hospital with a written protocol for GS usage were evaluated. Images were reviewed for gender, GS presence, adequate gonadal protection and obstruction of essential anatomical landmarks for pelvic indices. Results In all, 131 pelvis radiographs with DDH diagnoses (age: 1.25 to 6 years; 107 female, 24 male pelvises) were reviewed. Only 42.67% (56) of pelvis radiographs used GS despite the presence of a clear protocol. Useful anatomical landmarks were obstructed in 58.9% of radiographs with GS present. Lost diagnostic information was more common in female patients than male patients (68.1% versus 11.1%, p < 0.01). GS was ineffective at gonadal protection in 73.2% (41) of the pelvises with worse protection in female patients (78.7% vs 44.4%; p = 0.03). Conclusions Ironically, essential anatomy was obstructed in all the adequately protected female pelvises. Routine GS usage results in substantial attrition of radiographic data in DDH patients. Level of Evidence III

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Li, Ryan T., Raymond W. Liu, Mithun Neral, Heath Gould, Emily Hu, Shane Nho und Michael J. Salata. „Use of the False-Profile Radiographic View to Measure Pelvic Incidence“. American Journal of Sports Medicine 46, Nr. 9 (Juli 2018): 2089–95. http://dx.doi.org/10.1177/0363546518780938.

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Background: Pelvic incidence (PI) is an important variable in assessing spinopelvic balance that is associated with hip pathology. A lateral radiograph of the pelvis can be used to measure PI, but this view is not routinely performed in the clinical setting during evaluation of hip pain. The false-profile (FP) radiographic view of the hip is commonly obtained to measure acetabular coverage. Purpose: To evaluate the tolerance of PI measurements to pelvic rotation and assess the feasibility of using an FP radiograph to obtain an accurate measurement of PI. Study Design: Cohort study (diagnosis); Level of evidence, 2. Methods: A mathematical model was developed to predict the change in PI with rotation. Fluoroscopic images were obtained of 6 reconstructed cadaveric adult pelvis and femur specimens at varying degrees of rotation, including a perfect lateral and FP image. PI was measured with the midpoint between the centers of the femoral heads as a reference point. The findings were confirmed clinically by retrospectively reviewing FP radiographs and computed tomography (CT) scans of 40 clinical patients. PI was measured on FP radiographs and CT scans by 2 independent reviewers. Results: With dry cadaveric pelvis specimens, the discrepancy in PI measured between fluoroscopic FP and lateral views was 1.6° (95% CI, 0.7°-2.4°). There was excellent agreement between CT and FP radiographs with regard to measurement of PI (intraclass correlation coefficient = 0.92; 95% CI, 0.78-0.98). Mean discrepancy in PI measured between the 40 clinical FP radiographs and CT scans was 2.8° (range, 0.1°-9.1°). Conclusion: Increased rotation from a lateral view results in greater error in measuring PI, although relatively nominally with a 2.8° error with the 25° of rotation in clinical true FP views. These data demonstrate that FP radiographs can be used to measure PI with reasonable accuracy.

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Misiura, Anne K., Autumn D. Nanassy und Jacqueline Urbine. „Usefulness of Pelvic Radiographs in the Initial Trauma Evaluation with Concurrent CT: Is Additional Radiation Exposure Necessary?“ International Journal of Pediatrics 2018 (02.10.2018): 1–4. http://dx.doi.org/10.1155/2018/6260954.

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Trauma patients in a Level I Pediatric Trauma Center may undergo CT of the abdomen and pelvis with concurrent radiograph during initial evaluation in an attempt to diagnose injury. To determine if plain digital radiograph of the pelvis adds additional information in the initial trauma evaluation when CT of the abdomen and pelvis is also performed, trauma patients who presented to an urban Level I Pediatric Trauma Center between 1 January 2010 and 7 February 2017 in whom pelvic radiograph and CT of the abdomen and pelvis were performed within 24 hours of each other were analyzed. A total of 172 trauma patients had pelvic radiograph and CT exams performed within 24 hours of each other. There were 12 cases in which the radiograph missed pelvic fractures seen on CT and 2 cases in which the radiograph suspected a fracture that was not present on subsequent CT. Furthermore, fractures in the pelvis were missed on pelvic radiographs in 12 of 35 cases identified on CT. Sensitivity of pelvic radiograph in detecting fractures seen on CT was 65.7% with a 95% confidence interval of 47.79-80.87%. Results suggest that there is no added diagnostic information gained from a pelvic radiograph when concurrent CT is also obtained, a practice which exposes the pediatric trauma patient to unnecessary radiation.

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Spiker, Andrea M., Ryan M. Graf, Sean P. Duminie, Stephanie A. Kliethermes und David C. Goodspeed. „DIFFERENCES IN RADIOGRAPHIC MEASUREMENTS ON STANDING VERSUS SUPINE PELVIC RADIOGRAPHS“. Orthopaedic Journal of Sports Medicine 8, Nr. 4_suppl3 (01.04.2020): 2325967120S0016. http://dx.doi.org/10.1177/2325967120s00167.

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Background: Accurate pelvic radiographic measurements is of clear clinical importance, as these measurements can drive the indications for surgery, the surgical approach utilized, and/or the degree of correction during hip preservation surgery. Currently, there are a large number of measurements available and reported on the literature when referencing anterior-posterior (AP) pelvic radiographs. However, there is no standardization of whether these pelvic radiographs are obtained in the standing or supine position. Hypothesis/Purpose: Standing vs. Supine radiographs, obtained in the same patient, will result in different value for standard radiographic measurements used in making hip pathology diagnoses. Methods: All new patients who presented for evaluation of hip pain between September 2016 and July 2018 were retrospectively reviewed. Inclusion criteria included age 18-50, no prior hip surgery/injury, and both standing and supine AP pelvis radiographs dated within 2 years of each other. Measurements were obtained on 26 radiographs (52 hips), blinded to patient demographics and standing versus supine radiograph. Measurements included minimum joint space, lateral center edge angle (LCEA), acetabular depth, acetabular inclination, Tönnis Grade, crossover sign, posterior wall sign, ischial spine sign. Results: Standing films resulted in significantly lower LCEA and acetabular depth measurements, and higher acetabular inclination. Supine measurements for crossover sign were 5.69 times more likely to be positive than standing measurements. Similarly, supine measurements for ischial spine were 7.93 times more likely to be positive (see Table 1). Conclusion: Based on our study, supine films are almost 6 times more likely to give a positive crossover sign and almost 8 times more likely to give a positive ischial spine sign than a standing film in the same patient. Additionally, LCEA, acetabular depth will be lower and acetabular inclination will be higher on standing films. As such, our recommendation is to obtain standing AP pelvis radiographs to obtain the most accurate pelvic radiographic measurements in hip preservation patients. Tables: [Table: see text]

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Derbyshire, Brian. „Correction of radiographic measurements of acetabular cup wear for variations in pelvis orientation“. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 232, Nr. 3 (23.02.2018): 299–309. http://dx.doi.org/10.1177/0954411918754924.

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Radiographic measurement of two-dimensional acetabular cup wear is usually carried out on a series of follow-up radiographs of the patient’s pelvis. Since the orientation of the pelvis might not be consistent at every X-ray examination, the resulting change in view of the wear plane introduces error into the linear wear measurement. This effect is amplified on some designs of cup in which the centre of the socket is several millimetres below the centre of the cup or circular wire marker. This study describes the formulation of a mathematical method to correct radiographic wear measurements for changes in pelvis orientation. A mathematical simulation of changes in cup orientation and wear vectors caused by pelvic tilt was used to confirm that the formulae corrected the wear exactly if the radiographic plane of the reference radiograph was parallel to the true plane of wear. An error analysis showed that even when the true wear plane was not parallel to the reference radiographic plane, the formulae could still provide a useful correction. A published correction formula was found to be ineffective.

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Boënnec, Ronan, Paul-Armand Dujardin, Benjamin Meunier, Jean-Michel Rafin, Dominique Sirinelli, Laurent Brunereau und Baptiste Morel. „REDUCING PELVIS RADIOGRAPH EXPOSURE IN CHILDREN USING A DOSE SIMULATION X-RAY RESEARCH SOFTWARE“. Radiation Protection Dosimetry 194, Nr. 2-3 (Mai 2021): 90–96. http://dx.doi.org/10.1093/rpd/ncab083.

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Abstract Pelvis radiography is a frequent X-ray examination. The objective of our study was to determine the minimum dose to be delivered without reducing the quality. We included 60 children having a pelvis X-ray in four groups that were equally represented by weight ranges. A software simulated, for each radiograph, six additional simulated photonic noise images corresponding to 100, 80, 64, 50, 40 and 32% of the initial dose. The 360 radiographs were blindly scored by two radiologists using a semi-quantitative Likert scale. There was no significant difference in scoring between the reference radiograph and simulated radiographs at 80% of the dose in children between 0 and 15 kg and over 35 kg. Inter-observer reproducibility was moderate to very good. Pelvis X-ray doses might be reduced by 20% in children in our institution. Software that produces simulated X-ray with decreasing dose might be a useful tool for an optimization process.

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Csébi, Péter, Alexander Tichy, Michaela Gumpenberger und Eberhard Ludewig. „The slope of the pelvis is variable in dogs but does not show correlation with femoral subluxation“. Acta Veterinaria Hungarica 68, Nr. 2 (13.10.2020): 207–11. http://dx.doi.org/10.1556/004.2020.00020.

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AbstractThe aim of this study was to investigate the variability of the slope of the pelvis in different dog breeds and the correlation between pelvic slope and femoral subluxation. The sacrum–pelvis angle (SPA), the angulation between the sacrum and the axis of the ilium was created to represent the differences in the slope of the pelvis on lateral pelvic radiographs. The Norberg angle (NA) was used to quantify the femoral subluxation on hip-extended radiographs. Archived standard ventrodorsal hip radiographs and lateral lumbosacral radiographs of the same dogs were retrieved and a single observer measured the SPA and the NA in each case. A total of 180 dogs from six different breeds were sampled. The SPA varied between 40° and 71.5° and the NA between 71.2° and 113.9°. The findings indicated that there are significant individual and interbreed variations in the slope of the pelvis. However, no significant relationship between the slope of the pelvis and femoral subluxation could be identified.

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Abola, Matthew V., Derrick M. Knapik, Daniel R. Cooperman und Raymond W. Liu. „Correlation between the distance from the pubic symphysis to the sacrum with pelvic incidence“. HIP International 29, Nr. 5 (20.05.2019): 564–67. http://dx.doi.org/10.1177/1120700019850776.

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Introduction: The distance between the pubic symphysis and sacrococcygeal joint has been noted as an important parameter in evaluating pelvic tilt in an anteroposterior (AP) radiograph. Similarly, pelvic incidence measures the sagittal balance of the pelvis and is influenced by pelvic rotation. The relationship between these 2 parameters is unknown and could affect interpretation of pelvic AP radiographs. Methods: We reconstructed 248 cadaveric pelvises. Pelvic incidence was measured using a previously validated method. Pubic symphysis-sacrococcygeal joint (PSS) height was measured from the superior pubic tubercle to the sacrococcygeal joint. The pelvises were positioned so that the anterior pelvis lay flush with the surface. A ruler was zeroed on the pubic tubercles and a transverse projecting laser was used to measure the height to the sacrococcygeal joint. Results: A total of 248 pelvises were reconstructed. Average age of death of the specimens was 33±6.0 years. 80% of the pelvises were male, 56% were Caucasian, and 44% African American. The mean PSS height was 2.2 ± 1.4 cm and mean PI was 44.3° ± 10.6°. Multiple regression analysis found PI and PSS height were not correlated ( p = 0.144). Females had a larger PSS height than males (beta = 1.17, p < 0.001) and African Americans a larger PSS height than Caucasians (beta = 0.63, p < 0.001). Conclusions: This study provides useful information for clinicians in evaluating AP radiographs of the pelvis in that it supports the use of PSS height to judge the adequacy of a radiograph even in the context of abnormal pelvic incidence.

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Senthirajah, S. K. J., S. Nemanic, W. Baltzer, J. Warnock, G. Bobe und S. M. Stieger-Vanegas. „Evaluation of the diagnostic accuracy of four-view radiography and conventional computed tomography analysing sacral and pelvic fractures in dogs“. Veterinary and Comparative Orthopaedics and Traumatology 28, Nr. 03 (2015): 155–63. http://dx.doi.org/10.3415/vcot-14-06-0096.

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SummaryObjective: The purpose of our study was (1) to determine whether four-view radiography of the pelvis is as reliable and accurate as computed tomography (CT) in diagnosing sacral and pelvic fractures, in addition to coxofemoral and sacroiliac joint subluxation or luxation, and (2) to evaluate the effect of the amount of training in reading diagnostic imaging studies on the accuracy of diagnosing sacral and pelvic fractures in dogs.Methods: Sacral and pelvic fractures were created in 11 canine cadavers using a lateral impactor. In all cadavers, frog-legged ventrodorsal, lateral, right and left ventro-45°-medial to dorsolateral oblique frog leg (“rollover 45-degree view”) radiographs and a CT of the pelvis were obtained. Two radiologists, two surgeons and two veterinary students classified fractures using a confidence scale and noted the duration of evaluation for each imaging modality and case. The imaging results were compared to gross dissection.Results: All evaluators required significantly more time to analyse CT images compared to radiographic images. Sacral and pelvic fractures, specifically those of the sacral body, ischiatic table, and the pubic bone, were more accurately diagnosed using CT compared to radiography. Fractures of the acetabulum and iliac body were diagnosed with similar accuracy (at least 86%) using either modality.Clinical significance: Computed tomography is a better method for detecting canine sacral and some pelvic fractures compared to radiography. Computed tomography provided an accuracy of close to 100% in persons trained in evaluating CT images.

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Flintham, Kevin, Kholoud Alzyoud, Andrew England, Peter Hogg und Beverly Snaith. „Comparing the supine and erect pelvis radiographic examinations: an evaluation of anatomy, image quality and radiation dose“. British Journal of Radiology 94, Nr. 1123 (01.07.2021): 20210047. http://dx.doi.org/10.1259/bjr.20210047.

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Objectives: Pelvis radiographs are usually acquired supine despite standing imaging reflecting functional anatomy. We compared supine and erect radiographic examinations for anatomical features, radiation dose and image quality. Methods: 60 patients underwent pelvis radiography in both supine and erect positions at the same examination appointment. Measures of body mass index and sagittal diameter were obtained. Images were evaluated using visual grading analysis and pelvic tilt was compared. Dose–area product values were recorded and inputted into the CalDose_X software to estimate effective dose (ED). The CalDose_X software allowed comparisons using data from the erect and supine sex-specific phantoms (MAX06 & FAX06). Results: Patient sagittal diameter was greater on standing with an average 20.6% increase at the iliac crest (median 30.0, interquartile range [26.0 to 34.0] cm), in comparison to the supine position [24.0 (22.3 to 28.0) cm; p < 0.001]. 57 (95%) patients had posterior pelvic tilt on weight-bearing. Erect image quality was significantly decreased with median image quality scores of 78% (69 to 85) compared to 87% for the supine position [81 to 91] (p < 0.001). In the erect position, the ED was 47% higher [0.17 (0.13 to 0.33) mSv vs 0.12 (0.08 to 0.18) mSv (p < 0.001)], influenced by the increased sagittal diameter. 42 (70%) patients preferred the standing examination. Conclusion: Patient diameter and pelvic tilt were altered on weightbearing. Erect images demonstrated an overall decrease in image quality with a higher radiation dose. Optimal acquisition parameters are required for erect pelvis radiography as the supine technique is not directly transferable.

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Dissertationen zum Thema "Pelvis radiographs"

Foss, Olav A. „The Rotation Ratios Method - A Method to describe altered spatial orientation in sequential radiographs from one pelvis“. Doctoral thesis, Norwegian University of Science and Technology, Department of Neuroscience, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-2127.

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The Rotation Ratios Method

En metode for beskrivelse av endret romlig bekkeninnstilling svedsekvensielle røntgenopptak av samme bekken

Sammendraget:

Sekvensielle røntgenopptak av ett og samme bekken blir rutinemessig brukt bl.a. innen ortopedisk kirurgi. Ofte sammenliknes korresponderende røntgenmål for å vurdere sykdomsutvikling eller vurdere effekten av en behandling. Tre-dimensjonale objekt blir transformert til to-dimensjonale bilder ved røntgenopptak. Både den romlige innstillingen av objektet og fokusering av røntgenrøret i forhold til objektet påvirker avbildingen. Endringer i disse innstillingene kan derfor påvirke aktuelle røntgenmål og representere en feilkilde når korresponderende røntgenmål sammenliknes. I en serie av fire arbeid presenteres utviklingen av en målemetode som beskriver endringer i bekkeninnstilling om to akser, basert på standard frontale (AP) bekkenopptak.

To parametre som beskriver endring i bekkeninnstilling eller endring i røntgenfokusering ble validert ved bruk av definerte røntgenopptak av et bekkenfantom.

Et dataprogram for simulering av røntgenopptak av rigide objekt ble utviklet og validert. Dette programmet representerer et virtuelt røntgenlaboratorium der objektorientering, røntgenfokusering, mm. kan endres.

Dette dataprogrammet ble brukt til simulering av 4653 røntgenbilder av 141 utvalgte bekken, representerende en normalpopulasjon. Simulerte røntgenmål fra disse bildene ble brukt i utviklingen av et formelapparat for klinisk bruk. Korreksjonsfaktorer for kjønn og bekkenstørrelse ble innarbeidet.

Metoden, som er en algoritme inkluderende både manuelle og matematiske prosedyrer ble validert. Først ble de manuelle delene validert enkeltvis før en samlet validering ble gjort der en sammenliknet 1020 beregnede bekkenrotasjoner mot korresponderende reelle.

Metoden synes å ha god nok nøyaktighet for klinisk bruk.

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Baudry, Etienne Maugars Yves. „Intérêt des radiographies de bassin pour le diagnostic précoce de spondylarthropathie analyse de 181 oligoarthrites de rhumatismes inflammatoires débutants /“. [S.l.] : [s.n.], 2003. http://theses.univ-nantes.fr/thesemed/MEDbaudry.pdf.

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Mraity, H. A. A. „Optimisation of radiation dose and image quality for AP pelvis radiographic examination“. Thesis, University of Salford, 2015. http://usir.salford.ac.uk/36914/.

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Background and rationale: Optimising radiation dose and image quality in medical imaging is essential in minimising radiation risk and ensuring images are fit for purpose. This thesis uses novel methods for image quality assessment and radiation dose/image quality optimisation. The antero-posterior (AP) pelvis projection was used as a focus for optimisation. Methods: In the first part of this thesis a visual grading image quality assessment scale is developed and validated in order to assess radiographic image quality. The scale validation is conducted in two phases; the initial phase uses phantom images and is further tested in phase two with cadaveric images. The scale development and validation is guided by psychometric theory and in particular Bandura’s guidelines. In the second part of this thesis a framework is developed to systematically optimise the radiation dose and image quality for AP pelvis radiographic examinations. The methodology development for this section is guided by the factorial based experimental design. The optimisation includes manual and automatic exposure control modes. The image quality is visually assessed using the previously developed (novel) image quality scale and physically using a signal to noise ratio. The optimisation work is conducted with the aim of achieving two objectives: 1) identifying the optimum practice that would produce images with suitable quality and low radiation dose; 2) conducting a systematic investigation into the main effect of the primary acquisition factors on the response variables (e.g. image quality (IQ) and effective dose (E)). Results: A scale of 24 items was produced. These scale items had good inter-item correlation (≥0.2) and high factor loadings (≥0.32). Cronbach's alpha (reliability) revealed that the scale has acceptable levels of internal reliability for both phantom and cadaver (α= 0.8 and 0.9, respectively). The factor analysis suggested that the scale is multidimensional (assessing multiple quality themes). Accordingly, it is likely that this scale will be applicable in both clinical and research practices. The optimum practice was identified, resulting in suitable quality images with a lower dose (i.e. 88 to 94 % less than the UK average adult AP pelvis dose of 0.7 mSv) for both manual and AEC modes. Furthermore, it was identified that kVp had the biggest effect on radiation dose, image quality and figure of merit (P˂0.05) when compared with mAs and SID. The factorial design proved to be an efficient approach in optimising the radiation dose and image quality, and also for exploring the main effect of acquisition factors on radiation dose and image quality. Conclusion: This novel method for developing and validating image quality assessment scale shows promise. As such it is a recommended model for developing scales for other radiographic projections. The factorial design should be considered for use in future work due to its efficiency in optimising the radiation dose and image quality systematically. Finally, the AP pelvis scale, in its current form, could be used in future assessments of AP pelvis image quality.

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Ullman, Gustaf. „Quantifying image quality in diagnostic radiology using simulation of the imaging system and model observers“. Doctoral thesis, Linköping : Department of Medicine and Health, Linköping University, 2008. http://www.bibl.liu.se/liupubl/disp/disp2008/med1050s.pdf.

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Ji, Xiang. „The association of variations in hip and pelvic geometry with pregnancy-related sacroiliac joint pain based on a longitudinal analysis“. Kyoto University, 2019. http://hdl.handle.net/2433/242658.

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Patrick, Fiona E. „A review of fracture fixation as it affects the small animal pelvis : an anatomic, ultrasonographic, cross-sectional and retrospective radiographic study“. Thesis, University of Glasgow, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272935.

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Lester, Sonia. „A study of scattered radiation in diagnostic radiology using Monte Carlo simulation“. Thesis, Institute of Cancer Research (University Of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287993.

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Devito, Fábio Stucchi. „Eficácia do uso do Templating na artroplastia total do quadril“. Faculdade de Medicina de São José do Rio Preto, 2009. http://bdtd.famerp.br/handle/tede/62.

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Made available in DSpace on 2016-01-26T12:51:22Z (GMT). No. of bitstreams: 1 fabiostuchidevito_tese.pdf: 1050230 bytes, checksum: 52d8e95acef4a4ba2f5e60d301266786 (MD5) Previous issue date: 2009-04-17
Total hip arthroplasty is a surgery with a high success rate, providing pain relief and improvement of the articular mobility. Long-term success is related to the position and orientation of the acetabular and femoral components. Traditional preoperative planning entails radiographic analysis of the pelvis, in which a template is placed on the image, allowing an analysis of the appropriate size of the Exeter cemented prosthesis. Objective: To evaluate the effectiveness of traditional preoperative planning with the use of templating. Patients and Method: Forty-three anteroposterior X-rays were analyzed by three experienced surgeons. The evaluation of each surgeon was compared with the actual prosthesis used in the surgery and also compared with the assessment of the other two surgeons. Cohen's Kappa concordance test and weighted Kappa indexes using quadratic weighting were used for statistical analysis with a confidence interval of 95%. Results: The preoperative evaluations of Surgeons A, B and C were divided into the analysis of the sizes of the acetabular cup, stem and plug of the distal femoral canal. Surgeon A obtained a moderate agreement in relation to the acetabular component and substantial agreements in relation to the stem and plug. Surgeon B had moderate agreement in relation to both the acetabulum and the stem and substantial agreement in relation to the plug. Surgeon C obtained moderate agreement in relation to the analysis of the acetabulum and the plug and substantial agreement for the stem. The intra-observer agreement test demonstrated a prevalence of slight agreement in relation to the acetabulum and substantial agreement in relation to the stem and to the plug. Conclusion: Templating used in preoperative planning proved effective; however, there was a prevalence of slight and moderate agreement in relation to the size of the acetabular component according to the inter- and intra-observer analysis.
A artroplastia total do quadril é uma cirurgia com alto índice de sucesso, atuando no alívio da dor e melhora da mobilidade articular e seu êxito a longo prazo relaciona-se à posição e orientação do componente acetabular e femoral. O planejamento pré-operatório tradicional consiste na análise radiográfica da bacia, na qual será sobreposto um templating , o que permite a análise do tamanho adequado da prótese Exeter cimentada. Objetivo: Avaliar a eficácia do planejamento pré-operatório tradicional pelo uso do templating . Casuística e Método: Quarenta e três radiografias na posição antero-posterior e foram analisadas por três cirurgiões experientes; as avaliações de cada cirurgião foram comparadas com a prótese utilizada na cirurgia e cada resultado comparado com os resultados dos outros dois. Para avaliação, utilizou-se o teste de concordância do Capa de Cohen e do Capa ponderado, com ponderação quadrática e intervalo de confiança de 95%.Resultados: Os resultados pré-operatório encontrados pelo examinadores A, B e C foram divididos como análise do tamanho do acetábulo, haste e plug do canal femoral distal. O cirurgião A obteve em relação ao componente acetabular uma concordância moderada, e em relação à haste e ao plug uma concordância substancial. O cirurgião B apresentou resultado de concordância moderada em relação ao acetábulo e à haste e substancial em relação ao plug. O cirurgião C na análise acetabular e do plug obteve concordância moderada e substancial quanto à haste. O teste de concordância intra-observador apresentou uma prevalência da concordância leve em relação ao acetábulo e substancial em relação à haste e ao plug. Conclusão: O templating utilizado no planejamento pré-operatório mostrou-se eficaz, no entanto, em relação ao tamanho do componente acetabular houve um predomínio de concordância leve e moderada na análise inter e intraobservador.

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Oliveira, Fernando Toledo de. „Estimativa da idade cronológica por meio de avaliação radiográfica da mineralização de terceiros molares e altura do ramo da mandíbula“. Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/25/25132/tde-02062011-095629/.

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A estimativa da idade é um elemento importante na investigação antropológica, sendo uma das fontes preliminares dos dados para estabelecer a identidade de pessoas vivas ou restos mortais desconhecidos. Os métodos mais utilizados para este fim são os baseados no desenvolvimento ósseo e dentário dos indivíduos. Neste sentido, o presente trabalho apresentou como objetivo, estabelecer valores de referência na população brasileira para a estimativa da idade, por meio de dois métodos: a análise da mineralização dos terceiros molares; e a mensuração da altura do ramo mandibular. Para isso, foram escaneadas radiografias (407 panorâmicas e 289 cefalométricas em norma lateral) de pacientes, de 6 a 25 anos de idade, atendidos na Faculdade de Odontologia de Bauru. As imagens radiográficas panorâmicas foram utilizadas para análise da mineralização dos terceiros molares inferiores, através do método proposto por Demirjian, Goldstein e Tanner (1973), e as imagens radiográficas cefalométricas utilizadas para medir a altura do ramo da mandíbula. Os resultados indicam uma forte correlação entre a idade cronológica e ambos os métodos utilizados, proporcionando a elaboração de fórmulas para o cálculo da idade aproximada dos indivíduos na população estuda. Não houve diferença estatisticamente significante para o desenvolvimento dos terceiros molares entre os sexos. Já para a altura do ramo da mandíbula, essa diferença ocorreu entre os 16 e 25 anos de idade. A probabilidade de afirmamos que um indivíduo tem 18 anos ou mais de idade, com base nas duas metodologias proposta neste trabalho, é extremamente alta (>90%). Concluiu-se que ambos os métodos estariam aptos a serem utilizados para estimar a idade na população brasileira, entretanto, pelo fato do Brasil ser um país com extenso território e apresentar uma população bastante miscigenada, novos estudos devem ser realizados, aumentando a amostra dessa população, e permitindo o aprimoramento dos valores aqui informados.
Age determination is an important element in anthropological research, one of the primary sources of data to establish the person living identity or unknown remains. The aim of this paper was to establish reference values in Brazilian population to estimate chronological age by two methods: mineralization of third molars and measurement of the mandible ramus height. Therefore, radiographs from patients between 6 to 25 years, were scanned (407 panoramics and 289 cephalometrics). The patients were from School of Dentistry at Bauru. The panoramic radiographs were used for analysis the mineralization of the mandibular third molars. Moreover, cephalometric radiographs were used to measure the mandibular height. The results indicated a strong correlation between chronological age and both methods, providing the development of formulas for calculating the approximate real age of individuals by radiographs. There was no statistically significant difference for the third molars development between sexes. There was a significant difference between men and women for ramus height of the mandible for the range between 16 and 25 years. The probability of a claim that an individual is 18 years or older, based on the two methodologies proposed in this work was extremely high (>90%). It was concluded that both methods were suitable to be used to estimate the age in Brazilian population. However, as Brazil is a country with vast territory and present a fairly mixed population, it is necessary further studies to confirm the values reported.

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Flintham, K., K. Alzyoud, A. England, P. Hogg und Beverly Snaith. „Comparing the supine and erect pelvis radiographic examinations: an evaluation of anatomy, image quality and radiation dose“. 2021. http://hdl.handle.net/10454/18517.

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Objectives: Pelvis radiographs are usually acquired supine despite standing imaging reflecting functional anatomy. We compared supine and erect radiographic examinations for anatomical features, radiation dose and image quality. Methods: 60 patients underwent pelvis radiography in both supine and erect positions at the same examination appointment. Measures of body mass index and sagittal diameter were obtained. Images were evaluated using visual grading analysis and pelvic tilt was compared. Dose–area product values were recorded and inputted into the CalDose_X software to estimate effective dose (ED). The CalDose_X software allowed comparisons using data from the erect and supine sex-specific phantoms (MAX06 & FAX06). Results: Patient sagittal diameter was greater on standing with an average 20.6% increase at the iliac crest (median 30.0, interquartile range [26.0 to 34.0] cm), in comparison to the supine position [24.0 (22.3 to 28.0) cm; p < 0.001]. 57 (95%) patients had posterior pelvic tilt on weight-bearing. Erect image quality was significantly decreased with median image quality scores of 78% (69 to 85) compared to 87% for the supine position [81 to 91] (p < 0.001). In the erect position, the ED was 47% higher [0.17 (0.13 to 0.33) mSv vs 0.12 (0.08 to 0.18) mSv (p < 0.001)], influenced by the increased sagittal diameter. 42 (70%) patients preferred the standing examination. Conclusion: Patient diameter and pelvic tilt were altered on weightbearing. Erect images demonstrated an overall decrease in image quality with a higher radiation dose. Optimal acquisition parameters are required for erect pelvis radiography as the supine technique is not directly transferable.
College of Radiographers Industry Partnership Scheme grant.

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Bücher zum Thema "Pelvis radiographs"

R, Burgess Andrew, Hrsg. Radiologic management of pelvic ring fractures: Systematic radiographic diagnosis. Baltimore: Urban & Schwarzenberg, 1987.

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Pearls and pitfalls in abdominal imaging: Variants and other difficult diagnoses. Cambridge: Cambridge University Press, 2010.

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A, Taylor Stuart, DeLancey John O. L und SpringerLink (Online service), Hrsg. Imaging Pelvic Floor Disorders. 2. Aufl. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg, 2008.

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Diseases of the abdomen and pelvis: Diagnostic imaging and interventional techniques :38th International Diagnostic Course in Davos (IDKD), Davos, April 1-7, 2006 :including the Pediatric Satellite Course 'Kangaroo', presented by the Foundation for the Advancement of Education in Medical Radiolog, Zurich. Milan, IT: Springer, 2006.

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Radiologic oncology of the abdomen and pelvis: An atlas and text. Chicago: Year Book Medical Publishers, 1988.

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B, Fox Traci, und Godwin Cathy Herring, Hrsg. Examination review for ultrasound: Sonographic principles & instrumentation (SPI). Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins, 2011.

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Pocket atlas of MRI body anatomy. 2. Aufl. Philadelphia: Lippincott-Raven, 1995.

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Berquist, Thomas H. Pocket atlas of MRI body anatomy. New York: Raven Press, 1987.

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W, Yeakley Joel, und Harris John H. 1925-, Hrsg. Normal anatomy for multiplanar imaging: Head, neck, and spine. Baltimore: Williams & Wilkins, 1987.

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W, Yeakley Joel, und Harris John H. 1925-, Hrsg. Normal anatomy for multiplanar imaging: The trunk and extremities. Baltimore: Williams & Wilkins, 1987.

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Buchteile zum Thema "Pelvis radiographs"

Unett, Elizabeth M., und Amanda J. Royle. „Pelvic girdle“. In Radiographic Techniques and Image Evaluation, 111–22. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4899-2997-6_4.

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Brooker, Malcolm J. „Pelvic anatomy and pathology“. In Computed Tomography for Radiographers, 114–17. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-011-7996-6_13.

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Older, R. A. „Radiographic Imaging of Urinary Tract Infection and Obstruction“. In Diseases of the Abdomen and Pelvis, 197–201. Milano: Springer Milan, 1999. http://dx.doi.org/10.1007/978-88-470-2141-9_35.

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Lindner, C., S. Thiagarajah, J. M. Wilkinson, G. A. Wallis und Timothy F. Cootes. „Accurate Fully Automatic Femur Segmentation in Pelvic Radiographs Using Regression Voting“. In Medical Image Computing and Computer-Assisted Intervention – MICCAI 2012, 353–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33454-2_44.

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Nasifoglu, Huseyin, Osman Erogul, Gokce Kaan Atac und Galip Ozdemir. „Multi-Regional Adaptive Image Compression (AIC) for Hip Fractures in Pelvis Radiography“. In IFMBE Proceedings, 61–67. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4166-2_10.

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Dyszkiewicz, Andrzej, Paweł Połeć, Damian Chachulski, Paweł Kępiński und Jakub Zajdel. „Specific Evaluation of Pelvic Radiograms and Hip BMD in Structural Scoliosis Reflectorica and Reactive Pain Conditions of the Backbone“. In Advances in Intelligent and Soft Computing, 491–507. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-13105-9_50.

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Hoover, Kevin B. „Ankylosing Spondylitis“. In Musculoskeletal Imaging Volume 1, herausgegeben von Kevin B. Hoover, 152–56. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780190938161.003.0032.

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Chapter 32 discusses ankylosing spondylitis (AS), which is an inflammatory disease. It primarily affects white men. AS is a potentially debilitating disease that progresses to ankylosis of the axial skeleton if not appropriately diagnosed and treated. Large joint involvement is demonstrated in younger AS patients. AS results in progressive fusion, or ankylosis, of joints, which may be detectable on radiography. Pelvis and spine radiographs are a useful first study to identify the characteristic chronic findings of AS in the sacroiliac joints and spine. MRI, however, is the most sensitive modality to detect early inflammation and response to treatment.

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Mar, Winnie A., und Tyson S. Chadaz. „Tibia and Fibula Trauma“. In Musculoskeletal Imaging Volume 1, herausgegeben von Mihra S. Taljanovic und Tyson S. Chadaz, 106–7. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780190938161.003.0022.

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Chapter 22 reviews the mechanism of injury and clinical features, imaging strategy, imaging characteristics, and treatment options of tibia and fibula trauma including tibial shaft fractures and fibular fractures. Because tibial shaft fractures are common with potential complications, associated complications including infection, compartment syndrome, and delayed union are discussed. The ankle should be closely evaluated when an isolated fibular fracture is found. Imaging should begin with anterior-posterior (AP) and lateral radiographs of the entire tibia and fibula. Additional radiographs of the pelvis, femur, knee, and ankle may be obtained as additional fractures may be present. Treatment is usually with intramedullary nail, plate, or external fixation and casting for low-energy fractures without significant displacement.

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Semple-Hess, Janet. „Pediatric Orthopedic Emergencies“. In Pediatric Emergencies, 410–42. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780190073879.003.0037.

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Children’s bones, due to their continual maturity during childhood and into late adolescence and their unique features such as growth plates, can present a challenge to the emergency physician. Interpretation of radiographs when looking for fractures in growing children, as well as deciding on treatment and determining whether to employ surgical versus nonsurgical management, requires knowledge of the patterns of injury in children. This chapter discusses these injuries as well as fractures related to child abuse, overuse injuries, back pain in children, radial head subluxation, slipped capital femoral epiphyses, avulsion fractures of the pelvis, Perthes disease, and infectious diseases (osteomyelitis and septic arthritis).

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Tsao, Hoi See, und Robyn Wing. „The Rocking Pelvis“. In Pediatric Traumatic Emergencies, 67–74. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780190946623.003.0008.

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This chapter reviews the pelvic and genitourinary physical examination in the setting of pelvic trauma, the types of pelvic fractures, and diagnostic tests available, including ultrasound, plain radiography, and computed tomography, to evaluate for pelvic injuries. It discusses the management principles of fluid resuscitation and hemorrhage control with an unstable pelvis, including consideration of consultation with trauma surgery, orthopedic surgery, and interventional radiology. It examines the types of concomitant injuries that may be expected, including splenic, hepatic, urethral, and rectal injuries and emphasizes the need for individualized workup and management for each patient based on a thorough physical examination. The indications for a retrograde urethrogram and treatment options for pelvic fractures are also briefly reviewed.

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Konferenzberichte zum Thema "Pelvis radiographs"

Rios Rodriguez, V., M. Llop, M. Protopopov, J. Sieper, H. Haibel, M. Rudwaleit und D. Poddubnyy. „THU0274 Assessment of radiographic sacroiliitis on antero-posterior lumbar radiographs as compared to conventional pelvic radiographs in patients with axial spondyloarthritis“. In Annual European Congress of Rheumatology, EULAR 2018, Amsterdam, 13–16 June 2018. BMJ Publishing Group Ltd and European League Against Rheumatism, 2018. http://dx.doi.org/10.1136/annrheumdis-2018-eular.5654.

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Li, Ryan T., Heath Gould und Raymond W. Liu. „Pelvic Incidence Is Influenced by Pelvic Rotation in Plain Radiographs“. In Selection of Abstracts From NCE 2016. American Academy of Pediatrics, 2018. http://dx.doi.org/10.1542/peds.141.1_meetingabstract.679.

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Jodeiri, Ata, Reza A. Zoroofi, Yuta Hiasa, Masaki Takao, Nobuhiko Sugano, Yoshinobu Sato und Yoshito Otake. „Region-based Convolution Neural Network Approach for Accurate Segmentation of Pelvic Radiograph“. In 2019 26th National and 4th International Iranian Conference on Biomedical Engineering (ICBME). IEEE, 2019. http://dx.doi.org/10.1109/icbme49163.2019.9030401.

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Smith, R., und K. Najarian. „Automated segmentation of pelvic bone structure in x-ray radiographs using active shape models and directed Hough transform“. In 2008 IEEE International Conference on Bioinformatics and Biomedcine Workshops. IEEE, 2008. http://dx.doi.org/10.1109/bibmw.2008.4686209.

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Wink, Freke, Thomas Diemel, Suzanne Arends und Anneke Spoorenberg. „SAT0357 PREVALENCE OF RADIOGRAPHIC ENTHESEAL LESIONS AT THE HIP AND PELVIC REGION IN PATIENTS WITH ANKYLOSING SPONDYLITIS“. In Annual European Congress of Rheumatology, EULAR 2019, Madrid, 12–15 June 2019. BMJ Publishing Group Ltd and European League Against Rheumatism, 2019. http://dx.doi.org/10.1136/annrheumdis-2019-eular.7965.

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Dougados, M., A. Sepriano, A. Molto, S. Ramiro, M. De Hooge, R. Van Den Berg, V. Navarro Compan, C. De Mattei, R. LandewΈ und D. Van Der Heijde. „OP0115 Evaluation of the changes in structural damage in axial spondyloarthritis on plain pelvic radiographs: the 5 years data of the desir cohort“. In Annual European Congress of Rheumatology, 14–17 June, 2017. BMJ Publishing Group Ltd and European League Against Rheumatism, 2017. http://dx.doi.org/10.1136/annrheumdis-2017-eular.1625.

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Wiegand, Raymond. „2D pattern matching of frontal plane radiograph to 3D model identifies structural and functional deficiencies of spinal pelvic system in consideration of mechanical spine pain“. In Biomedical Applications in Molecular, Structural, and Functional Imaging, herausgegeben von Barjor Gimi und Andrzej Krol. SPIE, 2019. http://dx.doi.org/10.1117/12.2512247.

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Suhas, K. R. „Audit on the role and efficacy of PET/CT in recurrent ovarian cancer settings in a tertiary care centre in India“. In 16th Annual International Conference RGCON. Thieme Medical and Scientific Publishers Private Ltd., 2016. http://dx.doi.org/10.1055/s-0039-1685301.

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Ovarian cancers tend to recur in 15-70% cases. CA-125 - is a tumor marker used for monitoring therapeutic response, and in surveillance, for recurrent disease. However, it has a limited role as a persistent high level can signify either recurrence or persistence of residual tumor. Metastases from ovarian cancer primarily involve the peritoneum rather than parenchymal sites; thus, the presence of small-volume recurrence or metastatic deposits on the visceral surfaces poses a challenge for interpretation of CT and MR images. PET/CT utilizes its property of higher accumulation in malignant cells to provide both anatomic and functional information for diagnosing malignant tumors. Objectives: The objectives of the study were to find the correlation between PET/CT findings and final histopathological diagnosis after a secondary cytoreductive surgery in suspected ovarian cancer recurrences. Materials and Methods: PET/CT was done in cases with rising or above normal CA-125 and no radiological findings. These patients with abnormal PET/CT findings were taken up for a secondary cytoreductive surgery and histopathological proven were taken as the standard against which PET/CT positive findings was compared. Results: The mean age in our group of patients with suspected recurrence was 53 years (Range 39-74 years). Of the 52 patients with suspected recurrence, 40 patietnts with a PET-CT scan with findings suggestive of an avid uptake underwent surgery. 22 patients had serous histology, 12 mucinous and 8 had clear cell carcinoma. Stage-wise distribution at the time of primary surgery is as follows stage I-3, stage II-7, stage III-26, stage IV-4. Of the 40 patients who underwent a second look surgery 32 had histopathologically confirmed recurrence. PET-CT detected a total of 86 lesions in the 40 patients who underwent surgery. Of these, 38 were in the lymph nodes 28 in para-aortic and 10 in pelvic, 32 were peritoneal lesions and 14 were pelvic, 2 were metastatic in the parenchyma of liver. Detection of the lesion on PET-CT was size dependant, of the 9 lesions were missed on PET-CT, 7 were less than 0.5 cm. The mean diameter of the lesions detected was 2.2 cm (range 0.3-6.2 cm). PET-CT accurately identified 62 of 70 histopathologically proven lesions. The overall lesion-based sensitivity of PET-CT is 88.6%, specificity 56.2%, Positive predictive value being 72.1%, negative predictive value of 69.2%. Accuracy of detecting lesions greater than 1 cm is 78.6% (44 of 56 lesions). Conclusions: Corelation between PET/CT and histopathologicaldisease: k (cohen value) = 0.81 which suggests excellent correlation. For selected patients with ovarian cancer recurrence may benefit from a comprehensive radiographic imaging survey (PET-CT) at the time of even no or minimal CA-125 elevation in early detection and successful cytoreductive surgical resection and an increase in overall survival.

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