scholarly journals Lesser Trochanteric Fragments in Unstable Pertrochanteric Hip Fractures: A Morphological Study Using Three-Dimensional Computed Tomography (3-D CT) Reconstruction

2019 ◽  
Vol 25 ◽  
pp. 2049-2057 ◽  
Author(s):  
Wen-Feng Xiong ◽  
Ying-Qi Zhang ◽  
Shi-Min Chang ◽  
Sun-Jun Hu ◽  
Shou-Chao Du
Keyword(s):  
Computed Tomography ◽  
Hip Fractures ◽  
Morphological Study ◽  
Three Dimensional ◽  
Ct Reconstruction

scholarly journals Diagnostic tools in maxillofacial fractures: Is there really a need of three-dimensional computed tomography?

2016 ◽  
Vol 49 (02) ◽  
pp. 225-233 ◽  
Author(s):  
Sheerin Shah ◽  
Sanjeev K. Uppal ◽  
Rajinder K. Mittal ◽  
Ramneesh Garg ◽  
Kavita Saggar
Keyword(s):  
Computed Tomography ◽  
Clinical Examination ◽  
Computed Radiography ◽  
Three Dimensional ◽  
Nasal Bone ◽  
Conventional Radiography ◽  
Diagnostic Tools ◽  
Ct Reconstruction ◽  
Management Protocol ◽  
Maxillofacial Fractures

ABSTRACTIntroduction: Because of its functional and cosmetic importance, facial injuries, especially bony fractures are clinically very significant. Missed and maltreated fractures might result in malocclusion and disfigurement of the face, thus making accurate diagnosis of the fracture very essential. In earlier times, conventional radiography along with clinical examination played a major role in diagnosis of maxillofacial fractures. However, it was noted that the overlapping nature of bones and the inability to visualise soft tissue swelling and fracture displacement, especially in face, makes radiography less reliable and useful. Computed tomography (CT), also called as X-ray computed radiography, has helped in solving this problem. This clinical study is to compare three-dimensional (3D) CT reconstruction with conventional radiography in evaluating the maxillofacial fractures preoperatively and effecting the surgical management, accordingly. Materials and Methods: Fifty patients, with suspected maxillofacial fractures on clinical examination, were subjected to conventional radiography and CT face with 3D reconstruction. The number and site of fractures in zygoma, maxilla, mandible and nose, detected by both the methods, were enumerated and compared. The final bearing of these additional fractures, on the management protocol, was analysed. Results: CT proved superior to conventional radiography in diagnosing additional number of fractures in zygoma, maxilla, mandible (subcondylar) and nasal bone. Coronal and axial images were found to be significantly more diagnostic in fracture sites such as zygomaticomaxillary complex, orbital floor, arch, lateral maxillary wall and anterior maxillary wall. Conclusion: 3D images gave an inside out picture of the actual sites of fractures. It acted as mind’s eye for pre-operative planning and intra-operative execution of surgery. Better surgical treatment could be given to 33% of the cases because of better diagnostic ability of CT.

scholarly journals Coracoid Process Avulsion Fracture at the Coracoclavicular Ligament Attachment Site in an Osteoporotic Patient with Acromioclavicular Joint Dislocation

2016 ◽  
Vol 2016 ◽  
pp. 1-3 ◽  
Author(s):  
Yoshihiro Onada ◽  
Takahisa Umemoto ◽  
Kimitaka Fukuda ◽  
Tomomichi Kajino
Keyword(s):  
Computed Tomography ◽  
Acromioclavicular Joint ◽  
Three Dimensional ◽  
Attachment Site ◽  
Coracoid Process ◽  
Acromioclavicular Joint Dislocation ◽  
Coracoclavicular Ligament ◽  
Ct Reconstruction ◽  
Avulsion Fractures ◽  
Satisfactory Outcome

Coracoid fractures are uncommon, mostly occur at the base or neck of the coracoid process (CP), and typically present with ipsilateral acromioclavicular joint (ACJ) dislocation. However, CP avulsion fractures at the coracoclavicular ligament (CCL) attachment with ACJ dislocation have not been previously reported. A 59-year-old woman receiving glucocorticoid treatment fell from bed and complained of pain in her shoulder. Radiographs revealed an ACJ dislocation with a distal clavicle fracture. Three-dimensional computed tomography (3D-CT) reconstruction showed a small bone fragment at the medial apex of the CP. She was treated conservatively and achieved a satisfactory outcome. CP avulsion fractures at the CCL attachment can occur in osteoporotic patients with ACJ dislocations. Three-dimensional computed tomography is useful for identifying this fracture type. CP avulsion fractures should be suspected in patients with ACJ dislocations and risk factors for osteoporosis or osteopenia.

scholarly journals Feasibility of three-dimensional CT reconstruction in assessing mandibular fractures

2021 ◽  
Vol 20 ◽  
pp. e219912
Author(s):  
Victor Nogueira Moura ◽  
Emerson Nogueira ◽  
Ewerton Daniel Rocha Rodrigues ◽  
Caio Gonçalves Silva ◽  
Ricardo José De Holanda Vasconcellos
Keyword(s):  
Computed Tomography ◽  
Correct Diagnosis ◽  
Maxillofacial Surgery ◽  
Three Dimensional ◽  
Oral And Maxillofacial Surgery ◽  
Mandibular Fractures ◽  
3D Ct ◽  
Ct Reconstruction ◽  
Cross Sectional ◽  
3D Computed Tomography

Aim: Evaluation of the reliability of 3D computed tomography (3D-CT) in the diagnosis of mandibular fractures. Methods: A cross-sectional, quantitative and qualitative study was carried out, through the application of a questionnaire for 70 professionals in the area of Oral and Maxillofacial Surgery and Radiology. 3D-CT images of mandibular fractures were delivered to the interviewees along with a questionnaire. Participants answered about the number of traces, the region and the type of fracture. The correct diagnosis, that is, the expected answer, was based on the reports of a specialist in oral and maxillofacial radiology after viewing the images in the axial, sagittal and coronal sections. The resulting data from the interviewees was compared with the expected answer and then, the data was analyzed statistically. Results: In the sample 56.9% were between 22 and 30 years old, 52.8% were oral and maxillofacial surgeons (OMF), 34.7% were residents in OMF surgery and 12.5% OMF radiologists. Each professional answered 15 questions (related to five patients) and 50.8% of the total of these was answered correctly. Specialists in Oral and Maxillofacial Surgery and Traumatology correctly answered 53.9%. Interviewees with experience between 6 and 10 years correctly answered 58.2%. In identifying fracture traces, 46.1% of the questions were answered correctly. In terms of location, 5.6% of interviewees answered wrongly while 14.2% answered wrongly regarding classification. Conclusion: 3D computed tomography did not prove to be a reliable image for diagnosing mandibular fractures when used alone. This made necessary an association with axial, sagittal and coronal tomographic sections.

Role of three-dimensional computed tomography reconstruction in the management of elongated styloid process: a preliminary study

2007 ◽  
Vol 121 (4) ◽  
pp. 349-353 ◽  
Author(s):  
D R Nayak ◽  
K Pujary ◽  
M Aggarwal ◽  
S E Punnoose ◽  
V A Chaly
Keyword(s):  
Computed Tomography ◽  
Three Dimensional ◽  
Styloid Process ◽  
3D Ct ◽  
Ct Reconstruction ◽  
Elongated Styloid Process ◽  
Tomography Reconstruction ◽  
Preliminary Study ◽  
3D Ct Reconstruction

Elongated styloid process is a relatively common cause of facial and neck pain, but it is often misdiagnosed due to its varied clinical presentation. Since an elongated styloid process is often confirmed by radiological means, it would be helpful to find a more accurate mode of depicting the styloid process.In this prospective study, 39 cases were evaluated. A three-dimensional computed tomography (3D CT) reconstruction of the styloid process was performed in 18 cases. In these patients, we compared the length and medial angulation of the symptomatic styloid process as viewed on an orthopantomogram and a 3D CT reconstruction.It was noted that a 3D CT reconstruction was more accurate in depicting the styloid process. This investigation can be considered as the ‘gold standard’ in the radiological diagnosis of an elongated styloid process.

scholarly journals Morphological Study of Subaxial Cervical Pedicles by Using Three-Dimensional Computed Tomography Reconstruction Image

2014 ◽  
Vol 54 (9) ◽  
pp. 736-745 ◽  
Author(s):  
Kanthika WASINPONGWANICH ◽  
Permsak PAHOLPAK ◽  
Panya TUAMSUK ◽  
Winai SIRICHATIVAPEE ◽  
Taweechok WISANUYOTIN ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Morphological Study ◽  
Three Dimensional ◽  
Reconstruction Image ◽  
Tomography Reconstruction ◽  
Computed Tomography Reconstruction

scholarly journals Influence of Data Acquisition Algorithms on X-Ray Phase Contrast Imaging Computed Tomography

2020 ◽  
Vol 3 (4) ◽  
Author(s):  
Collin J. C. Epstein ◽  
Ryan N. Goodner ◽  
R. Derek West ◽  
Kyle R. Thompson ◽  
Amber L. Dagel
Keyword(s):  
Computed Tomography ◽  
Data Acquisition ◽  
Phase Contrast ◽  
Three Dimensional ◽  
Quality Data ◽  
Phase Contrast Imaging ◽  
Ct Reconstruction ◽  
Contrast Imaging ◽  
X Ray ◽  
Phase Stepping

Abstract X-ray phase contrast imaging (XPCI) is a nondestructive evaluation technique that enables high-contrast detection of low-attenuation materials that are largely transparent in traditional radiography. Extending a grating-based Talbot-Lau XPCI system to three-dimensional imaging with computed tomography (CT) imposes two motion requirements: the analyzer grating must translate transverse to the optical axis to capture image sets for XPCI reconstruction, and the sample must rotate to capture angular data for CT reconstruction. The acquisition algorithm choice determines the order of movement and positioning of the two stages. The choice of the image acquisition algorithm for XPCI CT is instrumental to collecting high fidelity data for reconstruction. We investigate how data acquisition influences XPCI CT by comparing two simple data acquisition algorithms and determine that capturing a full phase-stepping image set for a CT projection before rotating the sample results in higher quality data.

scholarly journals Clinical Practice: Giant Cell Tumour of the Jaw Mimicking Bone Malignancy on Three-Dimensional Computed Tomography (3D CT) Reconstruction

2008 ◽  
Vol 2 (1) ◽  
pp. 73-77 ◽  
Author(s):  
Alessandro Lanza ◽  
Luigi Laino ◽  
Luigi Rossiello ◽  
Letizia Perillo ◽  
Antonio Dell Ermo ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Giant Cell ◽  
Root Resorption ◽  
Giant Cell Tumour ◽  
Three Dimensional ◽  
Cell Tumour ◽  
Ct Reconstruction ◽  
Biological Behaviour ◽  
Wide Range ◽  
Benign Tumours

A wide range of diseases may present with radiographic features of osteolysis. Periapical inflammation, cysts and benign tumours, bone malignancies, all of these conditions may show bone resorption on radiograph. Features of the surrounding bone, margins of the lesion, and biological behaviour including tendency to infiltration and root resorption, may represent important criteria for distinguishing benign tumours from their malign counterpart, although the radiographic aspect of the lesion is not always predictive. Therefore a critical differential diagnosis has to be reached to choose the best management. Here, we report a case of giant cell tumour (GCT) whose radiological features by computed tomography (CT) suggested the presence of bone malignancy, whereas the evaluation of a routine OPT scan comforted us about the benign nature of the lesion. A brief review of the literature on such a benign but locally aggressive neoplasm is also provided.

scholarly journals Efficacy of a Customized Three-Dimensional Printing Surgical Guide for Tibial Plateau Leveling Osteotomy: A Comparison With Conventional Tibial Plateau Leveling Osteotomy

2021 ◽  
Vol 8 ◽  
Author(s):  
Jayon Kim ◽  
Jaeeun Ko ◽  
Jaehwan Kim ◽  
Anna Seo ◽  
Kidong Eom
Keyword(s):  
Computed Tomography ◽  
3D Printing ◽  
Tibial Plateau ◽  
Three Dimensional ◽  
Operation Time ◽  
Ct Reconstruction ◽  
Three Dimensional Printing ◽  
Surgical Guide ◽  
Surgical Guides ◽  
Dimensional Printing

Objective: To prospectively evaluate the effect of a computed tomography (CT)-based three-dimensional (3D) printing surgical guide on surgical accuracy of tibial plateau leveling osteotomy (TPLO).Study Design: Cadaveric study.Animals: Canine cadaveric hindlimbs (n = 14).Methods: TPLO was performed on cadaver hindlimbs disarticulated at the coxofemoral joint to compare and evaluate the conventional TPLO method (n = 7) with one that used customized 3D printing surgical guides (n = 7). The operation time and postoperative tibial plateau angle (TPA) of the osteotomy were evaluated. Moreover, the osteotomy inclination, torsion, and distance and the direction of eccentricity were assessed using CT reconstruction.Results: Significant differences in the operation time (p < 0.001), postoperative TPA (p < 0.05), osteotomy inclination (p < 0.05), and osteotomy torsion (p < 0.05) were observed.Conclusion: The use of TPLO surgical guide reduced the operation time and inaccurate osteotomy.Clinical Significance: The surgical technique applied with a customized 3D printing surgical guide could be used to perform osteotomy and TPA adjustment more precisely than conventional TPLO.

X-ray microtomography

1988 ◽  
Vol 46 ◽  
pp. 998-999
Author(s):  
H.W. Deckman ◽  
B.F. Flannery ◽  
J.H. Dunsmuir ◽  
K.D' Amico
Keyword(s):  
Computed Tomography ◽  
Internal Structure ◽  
Imaging Technique ◽  
Three Dimensional ◽  
Tissue Structure ◽  
Individual Element ◽  
X Ray ◽  
Non Invasive ◽  
Panoramic Imaging ◽  
Three Dimensional Images

We have developed a new X-ray microscope which produces complete three dimensional images of samples. The microscope operates by performing X-ray tomography with unprecedented resolution. Tomography is a non-invasive imaging technique that creates maps of the internal structure of samples from measurement of the attenuation of penetrating radiation. As conventionally practiced in medical Computed Tomography (CT), radiologists produce maps of bone and tissue structure in several planar sections that reveal features with 1mm resolution and 1% contrast. Microtomography extends the capability of CT in several ways. First, the resolution which approaches one micron, is one thousand times higher than that of the medical CT. Second, our approach acquires and analyses the data in a panoramic imaging format that directly produces three-dimensional maps in a series of contiguous stacked planes. Typical maps available today consist of three hundred planar sections each containing 512x512 pixels. Finally, and perhaps of most import scientifically, microtomography using a synchrotron X-ray source, allows us to generate maps of individual element.

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