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Radiology, Vol 163, 737-738, Copyright © 1987 by Radiological Society of North America

ARTICLES

Volumetric rendering techniques: applications for three-dimensional imaging of the hip

EK Fishman, B Drebin, D Magid, WW Scott Jr, DR Ney, AF Brooker Jr, LH Riley Jr, JA St. Ville, EA Zerhouni and SS Siegelman

Volumetric rendering is a new approach to three-dimensional (3D) imaging that overcomes many of the drawbacks of currently available surface-rendering systems. Its application on the Pixar Imaging System in two cases of acetabular fracture was assessed to illustrate the features of the technique. The fast-computing architecture and large memory of this system allow rapid generation of a series of high- quality 3D images in each plane of rotation (x or spinal axis, z or somersaulting axis) that can be viewed as independent static images or as an animated real-time video loop. Editing to remove the normal contralateral hemipelvis enhances appreciation of acetabular abnormalities. Every pixel of computed tomographic data is preserved, allowing representation of both soft tissue and bone as translucent overlap. The presentation of data also allows detection of subtle abnormalities and features and minimizes the artifact generation common in surface-rendered images.


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