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Proceedings Paper

Real-time stereographic display of volumetric datasets in radiology
Author(s): Xiao Hui Wang; Glenn S. Maitz; J. Ken Leader; Walter F. Good
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Paper Abstract

A workstation for testing the efficacy of stereographic displays for applications in radiology has been developed, and is currently being tested on lung CT exams acquired for lung cancer screening. The system exploits pre-staged rendering to achieve real-time dynamic display of slabs, where slab thickness, axial position, rendering method, brightness and contrast are interactively controlled by viewers. Stereo presentation is achieved by use of either frame-swapping images or cross-polarizing images. The system enables viewers to toggle between alternative renderings such as one using distance-weighted ray casting by maximum-intensity-projection, which is optimal for detection of small features in many cases, and ray casting by distance-weighted averaging, for characterizing features once detected. A reporting mechanism is provided which allows viewers to use a stereo cursor to measure and mark the 3D locations of specific features of interest, after which a pop-up dialog box appears for entering findings. The system's impact on performance is being tested on chest CT exams for lung cancer screening. Radiologists' subjective assessments have been solicited for other kinds of 3D exams (e.g., breast MRI) and their responses have been positive. Objective estimates of changes in performance and efficiency, however, must await the conclusion of our study.

Paper Details

Date Published: 30 January 2006
PDF: 7 pages
Proc. SPIE 6055, Stereoscopic Displays and Virtual Reality Systems XIII, 60551A (30 January 2006); doi: 10.1117/12.640834
Show Author Affiliations
Xiao Hui Wang, Univ. of Pittsburgh (United States)
Glenn S. Maitz, Univ. of Pittsburgh (United States)
J. Ken Leader, Univ. of Pittsburgh (United States)
Walter F. Good, Univ. of Pittsburgh (United States)

Published in SPIE Proceedings Vol. 6055:
Stereoscopic Displays and Virtual Reality Systems XIII
Andrew J. Woods; Mark T. Bolas; Ian E. McDowall; Neil A. Dodgson; John O. Merritt, Editor(s)

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