scholarly journals Four-dimensional computed tomography evaluation of condylar movement in patients underwent mandibular reconstruction

2017 ◽  
Vol 46 ◽  
pp. 174
Author(s):  
M. Akashi ◽  
T. Sekitani ◽  
Y. Ohtsuki ◽  
Y. Kakei ◽  
T. Hasegawa ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Mandibular Reconstruction ◽  
Condylar Movement

scholarly journals Evaluation of Effective Condyle Positioning Assisted by 3D Surgical Guide in Mandibular Reconstruction Using Osteocutaneous Free Flap

Materials ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2333
Author(s):  
Seong Ryoung Kim ◽  
Sam Jang ◽  
Kang-Min Ahn ◽  
Jee-Ho Lee
Keyword(s):  
Computed Tomography ◽  
Free Flap ◽  
Mandibular Reconstruction ◽  
Surgical Guide ◽  
Significant Movement ◽  
Flap Fixation ◽  
Simulation Surgery ◽  
3D Printed ◽  
Fibular Free Flap ◽  
Postoperative Observation

In the present study, the reproducibility and postoperative stability of a 3D printed surgical guide were evaluated in mandibular reconstruction with an osteocutaneous free flap (OCFF), including a fibular free flap (FFF) and deep circumflex iliac artery free flap (DCIA). Fifteen patients were enrolled, and a 3D surgical guide was fabricated by simulation surgery using preoperative (T0) Computed tomography (CT) images. Mandibular reconstruction was performed with OCFF using the 3D surgical guide. Postoperative CTs were taken immediately, 1 week (T1), and 6 months (T2) after surgery, to evaluate the reproducibility of the 3D surgical guide and condyle stability. Error of the 3D surgical guide ranged from 0.85 to 2.56 mm. There were no differences in reproducibility according to flap type. Condylar error and error at mandible midpoint were significantly different in FFF. However, there was no difference in DCIA error between the condyle and mandible midpoint. Regarding condyle stability 6 months after surgery, condyles moved more than 2 mm (up to 2.85 mm) in FFF, whereas there were no significant movement in DCIA. Careful intraoperative flap fixation and closed postoperative observation should be considered for stable clinical outcome, especially in the case of FFF.

Changes in Condylar Position After Mandibular Reconstruction With Condylar Head Preservation by Computed Tomography

2019 ◽  
Vol 77 (6) ◽  
pp. 1286-1292 ◽  
Author(s):  
Wei Wang ◽  
Xiao-feng Shan ◽  
Jie Liang ◽  
Shang Xie ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Mandibular Reconstruction ◽  
Condylar Position ◽  
Condylar Head

A Modified Method Using Double Computed Tomography Scan Procedure to Maintain Mandibular Width in Mandibular Reconstruction

2020 ◽  
Vol 31 (2) ◽  
pp. e126-e130
Author(s):  
Shunyao Shen ◽  
Chengshuai Yang ◽  
Jinyang Wu ◽  
Lei Zhang ◽  
Xudong Wang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Mandibular Reconstruction ◽  
Computed Tomography Scan ◽  
Modified Method ◽  
Tomography Scan

Four-dimensional computed tomography evaluation of jaw movement following mandibular reconstruction: A pilot study

2016 ◽  
Vol 44 (5) ◽  
pp. 637-641 ◽  
Author(s):  
Masaya Akashi ◽  
Yasuyuki Shibuya ◽  
Satoru Takahashi ◽  
Kazunobu Hashikawa ◽  
Takumi Hasegawa ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Pilot Study ◽  
Mandibular Reconstruction ◽  
Jaw Movement

Three-Dimensional Computed Tomography-Based Contouring of a Free Fibula Bone Graft for Mandibular Reconstruction

2008 ◽  
Vol 66 (10) ◽  
pp. 2185-2192 ◽  
Author(s):  
Krishnakumar Thankappan ◽  
Nirav Pravin Trivedi ◽  
Pramod Subash ◽  
Sreekumar Karumathil Pullara ◽  
Sherry Peter ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Bone Graft ◽  
Three Dimensional ◽  
Mandibular Reconstruction ◽  
Free Fibula

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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