MD Virtual Endoscopy: Is It Reality?â endoscopy, a type of interactive three-dimensional (3D) medical imaging, was only a vision a few years ago (1), but now more than a dozen commercial companies and academic institutions are actively pursuing IRTUAL this technology. Virtual reality imaging, which allows physicians to navigate through computer simulations of the human body, has attracted widespread attention, including interest from the National Cancer Institute (2). The article by Hara and co-workers, âColorectal Polyp Detection with CT Colography: 2D versus 3D Techniquesâ detect colonic polyps, even those smaller (3), introduces one form of interactive 3D rendering as applied to colonectal cancer screening. As Hara and co-workens point out in their discussion, colorec- than 1 cm. To the advantage of CT colography, the potential for malignancy is greatest when polyp size exceeds 1 cm (5). Using CT colography to detect these larger tion for addressing the problem of residual stool and water might be to develop orally administered contrast agents that could assist in distinguishing feces from polyps or to develop mucosal contrast agents, which would tal cancer is an important public health concern because it is the second leading cause of cancer-related deaths in the United
Radiology – Radiological Society of North America, Inc.
Published: Jul 1, 1996
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