April 13, 2004 — Virtual colonoscopy may sound like a great idea, but a new study shows the test colon cancer screening method is not however ready for broad use.
Although previous studies have appeared that virtual colonoscopy was sensibly precise at recognizing expansive polyps when performed by an expert, researchers found the computerized screening method was distant less solid when performed by a large number of specialists at different centers.
Virtual colonoscopy employments computer-generated images of the large colon to distinguish polyps which can lead to cancerous developments. The strategy is less invasive than standard colonoscopy and it involves imaging the colon without having to insert a long scope to see the inside of the colon.
The think about showed that virtual colonoscopy identified only almost 55% of developments that were at slightest 10 millimeters in breadth and 39% of littler developments of at slightest 6 millimeters. In differentiate, ordinary colonoscopy had exactness rates of 99% to 100% in identifying these growths.
Virtual Colonoscopy Needs More Work
Analysts say customary colonoscopy is widely accepted as the best accessible method for colorectal cancer screening. But numerous people are hesitant to experience the method, which requires the utilize of diuretics to clean the colon and sedation amid the method.
Computerized tomographic colongraphy (CTC) or virtual colonoscopy has been proposed as a screening test to allow customary colonoscopy to be utilized more selectively and productively.
In this think about, analysts looked at the how precise the modern colon cancer screening strategy was in recognizing lesions in the colon when performed at nine major clinic centers on 615 grown-ups aged 50 or older, who were alluded for schedule colonoscopy. Virtual colonoscopy was performed to begin with, followed by routine colonoscopy.
A add up to of 827 growths were identified, but researchers found virtual colonoscopy missed two of eight cancers. In expansion, the precision of the method varied significantly from center to center and did not improve as the study advanced and researchers gained involvement with the procedure.
“Our comes about indicate that CTC using these strategies is not prepared for routine utilize at this time, as many others have concluded,” compose researcher Peter Cotton, MD, of the Medical University of South Carolina, and colleagues within the latest Diary of the American Restorative Association. “There is an self-evident require for continuing collaboration between radiologists and gastroenterologists in further assessment of this energizing modern technology.”
In a commentary that accompanies the consider, David F. Ransohoff, MD, of the University of North Carolina, Chapel Slope, says the comes about show that the foremost squeezing issue for virtual colonoscopy is that it can be implemented as well broadly before the specialized problems that affect its precision are fully understood.
“The differences between what virtual colonoscopy can do and what it’ll do on the off chance that applied in conventional practice circumstances are so extraordinary that physicians must be cautious. There are numerous vital steps yet to be taken in learning how to actualize this new innovation fittingly” says Ransohoff.