Visualizing All
Colon Surfaces in Virtual Colonoscopy EXCERPT: Virtual
colonoscopy (VC) uses CT images and a computer visualization
system to virtually navigate within a reconstructed
3-D model of the colon, searching for polyps. There
are currently two approaches for VC...
Real-time Volume Rendering
Virtual Colonoscopy Practicum EXCERPT: This
computer exhibit demonstrates the ease in which virtual
colonoscopy can be performed with direct endoscopic
navigation using a real-time volume rendering system...
Electronic
Colon Cleansing using Segmentation Rays for Virtual Colonoscopy EXCERPT: Virtual
colonoscopy aims to provide a safe and comfortable technique
to screen the entire colon for detection of polyps (cancerous
growth). An accurate diagnosis requires a clean, un-obstructed
view of the colon lumen during thevirtual fly-through.
One way to achieve a clean colon lumen is to perform physical
bowel cleansing prior to the image scan. This method,
although effective, is highly uncomfortable for the patient.
Electronic cleansing provides an alternative solution
by removing the residual material from the scanned dataset
before the dataset is used for the virtual fly-through...
Covering
all Clinically Significant Areas of the Colon Surface
In Virtual Colonoscopy EXCERPT: Virtual
colonoscopy aims to provide a safe and comfortable technique
to examine the colon for polyps (cancerous growth). In
theory, an accurate diagnosis requires complete coverage
of 100% of the lumen surface. Mori et al. presented a
method to track observed regions and present unobserved
areas to the user (SPIE 4321 pp 134-145). We have developed
a similar method that automatically displays, places in
sized order and allows viewing of the areas of the colon
surface not visualized during initial navigational viewing...
