Interactive 3-D virtual colonoscopy system

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

We describe a low-cost three-dimensional (3-D) virtual colonoscopy system that is a noninvasive technique for examining the entire colon and can assist physicians in detecting polyps inside the colon. Using the helical CT data and proposed techniques, we can three-dimensionally reconstruct and visualize the inner surface of the colon. We generate high resolution of video views of the colon interior structures as if the viewer's eyes were inside the colon. The physicians can virtually navigate inside the colon in two different modes: interactive and automatic navigation, respectively. For automatic navigation, the flythrough path is determined a priori using the 3-D thinning and two-pass tracking schemes. The whole colon is spatially subdivided into several cells, and only potentially visible cells are taken into account during rendering. To further improve rendering efficiency, potentially visible cells are rendered at different levels of detail. Additionally, a chain of bounding volume in each cell is used to avoid penetrating through the colon during navigation. In comparison with previous work, the proposed system can efficiently accomplish required preprocessing tasks and afford adequate rendering speeds on a low-cost PC system.

Original languageEnglish
Pages (from-to)139-150
Number of pages12
JournalIEEE Transactions on Information Technology in Biomedicine
Volume3
Issue number2
DOIs
Publication statusPublished - 1999 Jan 1

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User-Computer Interface
Computed Tomographic Colonography
Colon
Navigation
Costs
Physicians
Costs and Cost Analysis
Spiral Computed Tomography
Polyps

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Computer Science Applications
  • Electrical and Electronic Engineering

Cite this

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abstract = "We describe a low-cost three-dimensional (3-D) virtual colonoscopy system that is a noninvasive technique for examining the entire colon and can assist physicians in detecting polyps inside the colon. Using the helical CT data and proposed techniques, we can three-dimensionally reconstruct and visualize the inner surface of the colon. We generate high resolution of video views of the colon interior structures as if the viewer's eyes were inside the colon. The physicians can virtually navigate inside the colon in two different modes: interactive and automatic navigation, respectively. For automatic navigation, the flythrough path is determined a priori using the 3-D thinning and two-pass tracking schemes. The whole colon is spatially subdivided into several cells, and only potentially visible cells are taken into account during rendering. To further improve rendering efficiency, potentially visible cells are rendered at different levels of detail. Additionally, a chain of bounding volume in each cell is used to avoid penetrating through the colon during navigation. In comparison with previous work, the proposed system can efficiently accomplish required preprocessing tasks and afford adequate rendering speeds on a low-cost PC system.",
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Interactive 3-D virtual colonoscopy system. / Lee, Tong Yee; Lin, Ping Hsien; Lin, Chao Hung; Sun, Yung Nien; Lin, Xi Zhang.

In: IEEE Transactions on Information Technology in Biomedicine, Vol. 3, No. 2, 01.01.1999, p. 139-150.

Research output: Contribution to journalArticle

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