New Engl J Med 1999[#2]
•Fenlon HM, et al. A comparison of virtual and
conventional colonoscopy
for the detection of colorectal polyps. New Engl J Med 1999;341:1496-1503
•100 patients at “high risk”. Among 49 patients abnormal findings included 115 polyps and 3 cancers.
•Complete exam rates were 87% for virtual CT and 89% for colonoscopy[RCR].
•Virtual CT found
3/3 cancers, 20/22 polyps >9mm[91%]; 33/40 polyps 6-9mm[82%]; and 29/53 polyps 6mm[67%].
•Virtual CT required 20 minutes for scanning, 30 minutes
for image manipulation, and 10
minutes for interpretation
•