Stature estimation based on radial and ulnar lengths using three-dimensional images from multidetector computed tomography in a Japanese population

2014 ◽  
Vol 16 (4) ◽  
pp. 181-186 ◽  
Author(s):  
Suguru Torimitsu ◽  
Yohsuke Makino ◽  
Hisako Saitoh ◽  
Ayaka Sakuma ◽  
Namiko Ishii ◽  
...  
2017 ◽  
Vol 275 ◽  
pp. 316.e1-316.e6 ◽  
Author(s):  
Suguru Torimitsu ◽  
Yohsuke Makino ◽  
Hisako Saitoh ◽  
Ayaka Sakuma ◽  
Namiko Ishii ◽  
...  

Author(s):  
H.W. Deckman ◽  
B.F. Flannery ◽  
J.H. Dunsmuir ◽  
K.D' Amico

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.


2017 ◽  
Vol 12 (4) ◽  
pp. 131-136
Author(s):  
V Natraj Prasad ◽  
Ashish Khanal

Background & Objectives: The maxillofacial region, a complex anatomical structure, can be evaluated by conventional (plain) films, Tomography, Multidetector Computed Tomography, Three-Dimensional Computed Tomography, Orthopantomogram and Magnetic Resonance Imaging. The study was conducted with objective of describing various forms of maxillofacial injuries, imaging features of different types of maxillofacial fractures and the advantage of using Three- Dimensional Computed Tomography reconstructed image. Materials & Methods: A hospital based cross-sectional study was conducted among 50 patients during April 2014 to September 2016 using Toshiba Aquilion Prime 160 slice Multi Detector Computed Tomography scanner.Results: The maxillofacial fractures were significantly higher in male population (88%) than female population (12 %). Road traffic accidents were the most common cause of injury others being physical assault and fall from height. It was most common in 31-40 years (26%) and 21-30 (24%) years age group. Maxillary sinus was the commonest fracture (36%) followed by nasal bone and zygomatic bone (30%), mandible and orbital bones (28%). Soft tissue swelling was the commonest associated finding. Three dimensional images (3 D) compared to the axial scans missed some fractures. However, the extension of the complex fracture lines and degree of displacement were more accurately assessed. Complex fractures found were Le fort (6%) and naso-orbito-ethmoid (4%) fractures.Conclusion: The proper evaluation of complex anatomy of the facial bones requires Multidetector Computed Tomography which offers excellent spatial resolution enabling multiplanar reformations and three dimensional reconstructions for enhanced diagnostic accuracy and surgical planning.


2013 ◽  
Vol 18 (3) ◽  
pp. 63-71 ◽  
Author(s):  
Maurício Barbosa Guerra da Silva ◽  
Eduardo Franzotti Sant'Anna

INTRODUCTION: Although the development of CT have represented a landmark in diagnostic imaging, its use in Dentistry turned out very discretely over the years. With the appearance of programs for analysis of three-dimensional images, specific for Orthodontics and Orthognathic surgery, a new reality is being built. OBJECTIVE: The authors of this study aim to inform the orthodontic society of fundamentals about digital cephalometric radiographic image and computed tomography, discussing about: Field of view (FOV), radiation doses, demands for the use in Orthodontics and radiographic simulations.


2018 ◽  
Vol 285 ◽  
pp. 207.e1-207.e5 ◽  
Author(s):  
Suguru Torimitsu ◽  
Yohsuke Makino ◽  
Hisako Saitoh ◽  
Ayaka Sakuma ◽  
Namiko Ishii ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document