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Abstract Full Text

Article: Pickhardt PJ et al. Computed Tomographic Virtual Colonoscopy to Screen for Colorectal Neoplasia in Asymptomatic Adults. N Engl J Med 2003;349(23):2191-200.

View Video Video 1. Video Clip from CT Virtual Colonoscopy Showing the Volume-Rendered Three-Dimensional Endoluminal Fly-Through View for the Evaluation of the Splenic Flexure Region in a 55-Year-Old Woman at Average Risk for Colorectal Neoplasia. An 11-mm pedunculated polyp is seen extending off a fold in the distal transverse colon. This three-dimensional technique was used for the initial detection of polyps and two-dimensional images were reserved for confirmation and problem solving.

View Figure Figure 1. Schematic Map of the Air-Filled Colon in the Same Average-Risk 55-Year-Old Woman. This map was generated from a CT scan that took 10 to 15 seconds to acquire; it shows the automated centerline (green) for virtual navigation. The blue arrow indicates the flight path, and the red dot indicates the location of the polyp seen in Video 1.

View Figure Figure 2. Digital Photograph from Optical Colonoscopy Performed Immediately after CT Virtual Colonoscopy in the same Average-Risk 55-Year-Old Woman. The photograph shows the same polyp in the distal transverse colon. Histologic examination after polypectomy revealed a tubulovillous adenoma.

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Abstract Full Text

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