April 18, 2009 |
With soothing walls of turquoise tile and a vase of orchids on the front desk, the Colon Health Center of Delaware has been selling an alternative to one of medicine's most unloved procedures -- the colonoscopy. Rather than insert several feet of tubing into patients' lower intestines, clinicians slide patients into a computed tomography, or CT, imaging machine that can quickly scan the abdomen for signs of cancer.
July 27, 2005 |
Virtual colonoscopy, an increasingly popular technique that uses CT scans instead of invasive endoscopy to identify colon polyps, can identify many medical problems outside the colon, making it a more valuable tool than researchers had previously believed. In 500 men undergoing virtual colonoscopy, 45 had significant problems outside the colon, including aneurysms and cancers, researchers from UC San Francisco report today in the journal Radiology.
April 19, 2004 |
Although virtual colonoscopy is being increasingly promoted as a high-tech, less painful way to detect colorectal cancer, real-world experience is demonstrating it can be unreliable. A comparison study of patients with at least one lesion measuring 10 millimeters or more found that virtual colonoscopy detected the lesions -- tissue abnormalities such as small tumors or polyps that can develop into cancers -- 55% of the time. When a standard colonoscopy was used, the test found all the lesions.
April 14, 2004 |
Virtual colonoscopy, a cancer-detecting procedure that gives doctors a computer-generated 3-D view of the colon, is less reliable than previously thought and not ready for widespread use, researchers said in a study in today's Journal of the American Medical Assn. Its accuracy varies considerably depending on the training and methods of the doctors performing it, according to a study of 600 patients at nine major clinics.
December 8, 2003 |
Colorectal screenings are not pleasant exams, and many people have longed for an easier way to have their large intestine checked for cancerous or precancerous polyps. Last week, they may have thought they had a solution.
December 2, 2003 |
An X-ray technique called virtual colonoscopy appears to be as effective as the conventional procedure for detecting polyps in the colon but is less invasive, does not require sedation and eliminates the risk of inadvertently puncturing the intestine, researchers said Monday. The procedure does not eliminate the 24-hour cleansing in which wastes are washed out of the intestines -- a process many patients find the most objectionable part of the procedure.