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Статті в журналах з теми "Maxillofacial fractures detection"
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Kang, Jie, and Lijie Jiang. "Application Value of the CT Scan 3D Reconstruction Technique in Maxillofacial Fracture Patients." Evidence-Based Complementary and Alternative Medicine 2022 (July 7, 2022): 1–4. http://dx.doi.org/10.1155/2022/1643434.
Повний текст джерелаАнотація:
Purpose The aim of the study was to explore the application value of computerized tomography (CT) scan 3D reconstruction technology in maxillofacial fracture patients. Methods A total of 80 maxillofacial fracture patients who underwent surgical treatment in Shijiazhuang People's Hospital from January 2019 to January 2020 were enrolled. All of them received 128-slice spiral CT scans before surgery, and the images were subjected to multiplanar reconstruction (MRP) and volume reconstruction (VR). Results A total of 181 fractures were found in 80 patients with maxillofacial fractures. The detection rates of axial CT, MRP, and VR were 77.90% (141/181), 93.92% (170/181), and 97.79% (177/181), respectively. The detection rates of the four inspection methods were statistically different. Taking the findings of surgical anatomy as the gold standard, the sensitivity of MRP and VR for the diagnosis of maxillofacial fractures was 90.06% (163/170) and 95.56% (174/177), with no significant difference. Conclusion CT scan 3D reconstruction technology has a high application value in the clinical diagnosis and treatment of maxillofacial fracture patients.
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Amodeo, Maria, Vincenzo Abbate, Pasquale Arpaia, Renato Cuocolo, Giovanni Dell’Aversana Orabona, Monica Murero, Marco Parvis, Roberto Prevete, and Lorenzo Ugga. "Transfer Learning for an Automated Detection System of Fractures in Patients with Maxillofacial Trauma." Applied Sciences 11, no. 14 (July 7, 2021): 6293. http://dx.doi.org/10.3390/app11146293.
Повний текст джерелаАнотація:
An original maxillofacial fracture detection system (MFDS), based on convolutional neural networks and transfer learning, is proposed to detect traumatic fractures in patients. A convolutional neural network pre-trained on non-medical images was re-trained and fine-tuned using computed tomography (CT) scans to produce a model for the classification of future CTs as either “fracture” or “noFracture”. The model was trained on a total of 148 CTs (120 patients labeled with “fracture” and 28 patients labeled with “noFracture”). The validation dataset, used for statistical analysis, was characterized by 30 patients (5 with “noFracture” and 25 with “fracture”). An additional 30 CT scans, comprising 25 “fracture” and 5 “noFracture” images, were used as the test dataset for final testing. Tests were carried out both by considering the single slices and by grouping the slices for patients. A patient was categorized as fractured if two consecutive slices were classified with a fracture probability higher than 0.99. The patients’ results show that the model accuracy in classifying the maxillofacial fractures is 80%. Even if the MFDS model cannot replace the radiologist’s work, it can provide valuable assistive support, reducing the risk of human error, preventing patient harm by minimizing diagnostic delays, and reducing the incongruous burden of hospitalization.
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Ahmad, Kaleem, RK Rauniyar, Mukesh Kumar Gupta, Sajid Ansari, Ashok Raj Pant, Abhishek Kumar, and Basmah Abdur Rashid. "Multidetector computed tomographic evaluation of maxillofacial trauma." Asian Journal of Medical Sciences 5, no. 4 (May 16, 2014): 39–43. http://dx.doi.org/10.3126/ajms.v5i4.9561.
Повний текст джерелаАнотація:
Introduction: Maxillofacial injuries are one of the most frequently encountered entities accounting for a large proportion of patients in emergency department. Present study was performed to assess the role of multidetector computed tomography (MDCT) in patients of maxillofacial trauma and to describe the spectrum of various patterns of injuries in maxillofacial region in this part of Nepal. Methods: The study was carried out on a prospective basis over a period of one year. All the patients referred for evaluation of maxillofacial trauma were included in the study. MDCT was done in patients of maxillofacial injury and the data was recorded and analyzed. Volumetric MDCT scan of the maxillofacial region was performed in axial plane with multiplanar reconstruction in coronal and sagittal planes were obtained wherever required. Results: Out of 60 patients of maxillofacial trauma 42 (70%) were males and 18 (30%) were females and age ranges from 12 to 70 years. The 11?30 years age group has the highest percentage (55%) of maxillofacial trauma, followed by 31?40 (20%). The common cause of injuries in our study was road traffic accidents (58.33%), fall from height (20%), physical assault (16.66%) and sport injuries (5%). Out of 60 patients there was total of 115 fractures. The frequency and types of fracture was as follows: orbital floor fracture in 21 (35%), maxillary sinus wall fracture in 18 (30%), nasal bone fracture in 17 (28.33%), jaw fracture in 15 (25%), zygomatic bone fracture in 13 (21.66%), orbital wall fracture in 11 (18.33%), naso?ethmoidal fractures in 9 (15%), frontal sinus fracture in 7 (11.66%), Lefort fracture in 1 (1.66%) and others 3 (5%). The highest percentage of fracture was of orbital floor (35%) followed by fracture of wall of maxillary sinus (30%) and nasal bone fracture (28.33%). Three cases had simultaneous injury of the globe and cervical spine; they underwent computed tomography/magnetic resonance imaging for the assessment of spine. Conclusion: Injuries to maxillofacial region is one of the most common emergency requiring accurate and early diagnosis for preventing unnecessary investigations and proper management. MDCT has high sensitivity and specificity and has high accuracy for detection of fracture. DOI: http://dx.doi.org/10.3126/ajms.v5i4.9561 Asian Journal of Medical Sciences 2014 Vol.5(4); 39-43
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Ullah, Nahmeed, Nighat Khan, Jahangir Hammad, Nizam Ul Mulk, Anum Javed, Gul Khanda, and Assad Ullah. "Comparison of Infra Orbital Nerve Outcome in Zygomaticomaxillary Complex Fractures Treated Surgically and Conservatively." Pakistan Journal of Medical and Health Sciences 16, no. 12 (December 31, 2022): 323–26. http://dx.doi.org/10.53350/pjmhs20221612323.
Повний текст джерелаАнотація:
Introduction: Zygomaticomaxillary complex fractures are second most common facial injuries. These fracture are managed either by open reduction with rigid fixation or conservatively. Objective: To compare infra orbital nerve outcome in zygomaticomaxillary complex fractures treated surgically and conservatively. Methodology: The current randomized controlled trial study was carried out at Oral and Maxillofacial Surgery Department, Sandeman Provincial Hospital/Bolan Medical College Quetta from 23/04/2018 to 22/10/2018 after the synopsis approval. Total sample size calculated was 100. 50 patients in Group-A were treated by open reduction and internal fixation technique and 50 patients in Group-B were managed conservatively without any intervention. All the data was recorded in a specialized proforma for this study. Data analysis was done by SPSS. Results: The overall mean age (SD) of the patient’s was 36.2±7.1 years. Most of the patients (n=64, 64.0%) were 31-45 years old. The male patients in our study were 65 (65.0%) whereas female participants were 35 (35.0%). For detection of mechanical threshold, the patients proportion with sensations at 3cm filament length was significantly lower in patients who underwent surgical treatment (78.0% vs. 100.0%; p-value<0.001) as compared to the participants managed conservatively. It was also lower significantly at 5cm and 7cm for Group-A in comparison to Group-B (p-value≤0.05). For detection of heat threshold, the patients proportion with sensation at 32°C was no different between Group-A and Group-B (p-value=0.529). However, proportion of patients with sensations at 35oC (64.0% vs. 100.0%; p-value<0.001) and 37oc (90.0% vs. 100.0%; p-value=0.022) was lower significantly in surgically treated patients. Pain threshold detection was significantly lower in patients who underwent surgical treatment (1.26±0.44 vs. 1.58±0.49; p-value<0.001) in comparison to conservative treatment. Conclusion: In patients with zygomaticomaxillary complex fractures, infra orbital nerve outcome was superior in patients managed conservatively than those treated with open reduction and internal fixation which advocates evading unnecessary intervention in such cases in future practice. Keywords: Zygomaticomaxillary Complex Fractures, Conservative Treatment, Infra Orbital Nerve
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Kopchak, Andrii, Anna Romanova, and Oleksandr Mykhailenko. "Detection of Titanium Particles in Soft Tissues Adjacent to the Fixators in Patients with Facial Fractures and Bone Defects." Journal of Diagnostics and Treatment of Oral and Maxillofacial Pathology 2, no. 1 (March 30, 2018): 25–42. http://dx.doi.org/10.23999/j.dtomp.2018.1.9.
Повний текст джерелаАнотація:
Background: Open reposition and rigid internal fixation are the main methods of treatment for traumatic injuries of the facial skull and an important stage of bone-plastic, reconstructive, and orthognathic surgery. In contemporary maxillofacial surgery, fixators, implants, and endoprostheses made of titanium or its alloys are widely used due to the high corrosion resistance and biocompatibility. However, recent studies have shown that none of the metal implants used in maxillofacial surgery, orthopedics or traumatology is completely inert. Moreover, they always interact with the surrounding biological environment. Thus, a number of studies have revealed the release of titanium to the adjacent soft tissues. Material and Methods: Titanium fixators (plates and screws) removed in 12 patients in late terms after osteosynthesis, as well as biopsies of the periosteum and fibrous capsule adjacent to the fixation elements made of titanium were investigated. Microscopic fluorescence spectroscopic analysis (M4 TORNADO micro-ray fluorescence spectrometer; Bruker, Bremen, Germany) was used to determine the elemental composition of the removed soft tissue fragments. Scanning electron microscopy (microscope model JSM-6060; JEOL, Japan) was used to study structural changes on the surface of titanium plates and screws. The obtained results were analized with the use of Spirman correlation coefficient, calculated by the IBM SPSS Statistics v.23 software. Results: X-ray fluorescence analysis revealed the inclusion of titanium in all investigated samples with an average content of titanium 48.14% ± 31.1% in metal deposition areas. For samples removed in patients with traumatic facial fractures after metallosteosynthesis, the average content of titanium was 55.6%, and for reconstructive surgeries – 37.72%. The acquired maps of the element deposition showed no topographic inhomogenity of titanium particles distribution. The main distribution patterns were the following: 1) areas of clearly outlined intensive titanium inclusions (90.9-800 μm), and 2) diffuse titanium inclusions which were poorly demarcated. Electronic microscopy of the investigated fixators revealed deformation of the thread, bending of screws, deformation and surface defects of the plates caused by mechanical damage, including microcracks, sharp edges, scratches, dimples.
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Eskandarloo, Amir, Amin Mahdavi Asl, Mohsen Jalalzadeh, Maryam Tayari, Mohammad Hosseinipanah, Javad Fardmal, and Abbas Shokri. "Effect of Time Lapse on the Diagnostic Accuracy of Cone Beam Computed Tomography for Detection of Vertical Root Fractures." Brazilian Dental Journal 27, no. 1 (February 2016): 16–21. http://dx.doi.org/10.1590/0103-6440201600455.
Повний текст джерелаАнотація:
Abstract Accurate and early diagnosis of vertical root fractures (VRFs) is imperative to prevent extensive bone loss and unnecessary endodontic and prosthodontic treatments. The aim of this study was to assess the effect of time lapse on the diagnostic accuracy of cone beam computed tomography (CBCT) for VRFs in endodontically treated dog's teeth. Forty-eight incisors and premolars of three adult male dogs underwent root canal therapy. The teeth were assigned to two groups: VRFs were artificially induced in the first group (n=24) while the teeth in the second group remained intact (n=24). The CBCT scans were obtained by NewTom 3G unit immediately after inducing VRFs and after one, two, three, four, eight, 12 and 16 weeks. Three oral and maxillofacial radiologists blinded to the date of radiographs assessed the presence/absence of VRFs on CBCT scans. The sensitivity, specificity and accuracy values were calculated and data were analyzed using SPSS v.16 software and ANOVA. The total accuracy of detection of VRFs immediately after surgery, one, two, three, four, eight, 12 and 16 weeks was 67.3%, 68.7%, 66.6%, 64.6%, 64.5%, 69.4%, 68.7%, 68% respectively. The effect of time lapse on detection of VRFs was not significant (p>0.05). Overall sensitivity, specificity and accuracy of CBCT for detection of VRFs were 74.3%, 62.2%, 67.2% respectively. Cone beam computed tomography is a valuable tool for detection of VRFs. Time lapse (four months) had no effect on detection of VRFs on CBCT scans.
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Bryson, Betty L., Joseph P. Ornato, Robert R. Farquharson, Patrick J. Donovan, and Francis G. Palaio. "Selection of Trauma Victims for Cervical Spine Radiological Examination." Prehospital and Disaster Medicine 1, S1 (1985): 199–202. http://dx.doi.org/10.1017/s1049023x00044460.
Повний текст джерелаАнотація:
Evaluation of the traumatized patient frequently involves consideration of possible cervical spine injury. When neurological deficits, unconsciousness, alcoholic intoxication, severe maxillofacial or head trauma, or local neck pain are present, it is an easy decision to obtain cervical spine x-rays. The dilemma arises in the patient without neck pain who has mild to moderate scalp or facial injuries. Such a patient usually arrives in the emergency department with a cervical collar placed by pre-hospital personnel because of the mechanism of injury and the associated head or facial soft tissue trauma. Due to the association of cervical spine fractures with “significant” facial trauma, neck x-rays have been recommended. What, however, constitutes “significant” facial trauma To delineate such facial injuries, a retrospective analysis of 30 patients with cervicalspine fractures hospitalizedin a five year period at the University of Nebraska Medical Center was performed. Seventeen patients had head, scalp or facial injuries ranging from skull fractures and scalp hematomas to minor abrasions and lacerations. To determine if cervical spine films are being over utilized, a current prospective study of patients undergoing this evaluation will be presented, detailing the facial and head injuries, location, degree of severity, and detection of cervical spine injuries.
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Matteson, S. R., S. T. Deahl, M. E. Alder, and P. V. Nummikoski. "Advanced Imaging Methods." Critical Reviews in Oral Biology & Medicine 7, no. 4 (October 1996): 346–95. http://dx.doi.org/10.1177/10454411960070040401.
Повний текст джерелаАнотація:
Recent developments in imaging sciences have enabled dental researchers to visualize structural and biophysical changes effectively. New approaches for intra-oral radiography allow investigators to conduct densitometric assessments of dento-alveolar structures. Longitudinal changes in alveolar bone can be studied by computer-assisted image analysis programs. These techniques have been applied to dimensional analysis of the alveolar crest, detection of gain or loss of alveolar bone density, peri-implant bone healing, and caries detection. Dental applications of computed tomography (CT) include the detailed radiologic anatomy of alveolar processes, orofacial soft tissues and air spaces, and developmental defects. Image analysis software permits bone mass mineralization to be quantified by means of CT data. CT has also been used to study salivary gland disease, injuries of the facial skeleton, and dental implant treatment planning. Magnetic resonance imaging (MRI) has been used extensively in retrospective and prospective studies of internal derangements of the temporomandibular joint. Assessments based on MRI imaging of the salivary glands, paranasal sinuses, and cerebrovascular disease have also been reported. Magnetic resonance spectroscopy (MRS) has been applied to the study of skeletal muscle, tumors, and to monitor the healing of grafts. Nuclear imaging provides a sensitive technique for early detection of physiological changes in soft tissue and bone. It has been used in studies of periodontitis, osteomyelitis, oral and maxillofacial tumors, stress fractures, bone healing, temporomandibular joint, and blood flow. This article includes brief descriptions of the technical principles of each imaging modality, reviews their previous uses in oral biology research, and discusses potential future applications in research protocols.
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Nikoloudaki, Georgia E., Taxiarchis G. Kontogiannis, and Nikolaos P. Kerezoudis. "Evaluation of the Root and Canal Morphology of Maxillary Permanent Molars and the Incidence of the Second Mesiobuccal Root Canal in Greek Population Using Cone-beam Computed Tomography." Open Dentistry Journal 9, no. 1 (July 31, 2015): 267–72. http://dx.doi.org/10.2174/1874210601509010267.
Повний текст джерелаАнотація:
Objectives: Cone-Beam Computed Tomography is an alternative imaging technique which has been recently introduced in the field of Oral & Maxillofacial Radiology. It has rapidly gained great popularity among clinicians due to its ability to detect lesions and defects of the orofacial region and provide three-dimensional information about them. In the field of Endodontics, CBCT can be a useful tool to reveal tooth morphology irregularities, additional root canals and vertical root fractures. The objective of this study is to evaluate the root and root canal morphology of the maxillary permanent molars in Greek population using Cone-Beam Computed Tomography.Materials and Methods:273 cone-beam computed tomography (CBCT) images were examined. The number of roots and root canals of the first and second maxillary molars were evaluated. Root canal configuration was classified according to Weine’s classification by two independent examiners and statistical analysis was performed.Results:A total of 812 molars (410 first and 402 second ones) were evaluated. The vast majority of both first and second molars had three roots (89.26% and 85.07%, respectively). Most first molars had four canals, while most second molars had three. In the mesiobuccal roots, one foramen was recorded in 80.91% of all teeth. Other rare morphologic variations were also found, such as fusion of a maxillary second molar with a supernumerary tooth.Conclusion:Within the limitations of this study, it can be concluded that more attention should be given to the detection of additional canals during root canal treatment in maxillary permanent molars. Towards this effort, CBCT can provide the clinician with supplemental information about the different root canal configurations for successful Root Canal Treatment.
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Mohammadifard, Mahyar, Ghasem Karimi, Afshin Eslamirad, Ali Mohammad Poorbagher Shahri, and Mohammad Hasan Golbooyi. "Comparing the Ultrasonography Diagnostic Value with Standard Radiography in Detecting Nasal Fractures." International Journal of Ayurvedic Medicine 10, no. 4 (January 14, 2020): 323–25. http://dx.doi.org/10.47552/ijam.v10i4.1301.
Повний текст джерелаАнотація:
Background: Nasal bone fractures are the most typical kind of facial injuries. In recent years, ultrasonography has been suggested as an alternative method for detecting maxillofacial fractures. It can eliminate the risk of radiation exposure, especially in children and pregnant women. The objective of present study was to compare the diagnostic competency of conventional radiography with ultrasonography in the diagnosis of nasal injuries specially, fractures. Method: In prospective research, 331 patients with a history of midfacial trauma were enrolled. Following clinical examination, radiographs were obtained in lateral and occipitomental views. Ultrasonography was performed by an experienced sonologist, blinded to clinical findings in right and left lateral sides in addition to nasal dorsum. Images were analyzed by an experienced radiologist. Sensitivity, specificity and predictive values of radiology and US were determined by comparing their results with findings of the clinical examination as the gold standard. Results: In assessment of nasal fractures the sensitivity and specificity of ultrasonography were 97.79% and 97.66%, respectively; while for radiography these two factors were 81.21% and 86.66%, respectively. Based on the Chi-square test, ultrasonography was notably greater to radiography in diagnosing nasal fractures (P<0.001). Conclusion: Compared with radiography, ultrasonography had a higher sensitivity and specifity in detecting nasal fractures and seems to be an adequate method for the diagnosis of nasal fractures.
Дисертації з теми "Maxillofacial fractures detection"
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AMODEO, MARIA. "Deep Learning Methods for Industry and Healthcare." Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2963952.
Повний текст джерелаЧастини книг з теми "Maxillofacial fractures detection"
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Christopher Aranha Watanabe, Plauto, Giovani Antonio Rodrigues, Marcelo Rodrigues Azenha, Michel Campos Ribeiro, Enéas de Almeida Souza Filho, Rafael Angelo Soares Vieira, and Fabio Santos Bottacin. "Bone Quality of the Dento-Maxillofacial Complex and Osteoporosis. Opportunistic Radiographic Interpretation." In Osteoporosis - Recent Advances, New Perspectives and Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96487.
Повний текст джерелаАнотація:
Research suggests the use of different indexes on panoramic radiography as a way to assess BMD and to be able to detect changes in bone metabolism before fractures occur. Therefore, the objective of this chapter is to describe the use of these parameters as an auxiliary mechanism in the detection of low bone mineral density, as well as to characterize the radiographic findings of patients with osteoporosis.