Examples of Virtual colonoscopy
abound on the Internet, One can be accessed at the following Web site: www.radiologyinfo.org/en/info.
takes about 20 minutes and requires no sedation or scope.
Search terms included "CT colonography," "virtual colonoscopy
," "CTcolonoscopy," "colography," and "CT pneumocolon." (17) The general focus was on original research articles, but meta-analyses and review articles were also considered.
The radiation dose of a virtual colonoscopy
(supine/prone scan) can get as low as 2 mSv for an ultra-low-dose CT colonography (10 mAs) (16) and up to approximately 8.8 mSv at higher mAs.
Even with virtual colonoscopy
, the polyps are not removed.
, also known as CT colonography, is a minimally invasive procedure that creates 2-D and 3-D images to identify abnormalities such as precancerous polyps.
The virtual colonoscopy
requires no sedation, so patients can resume normal activities immediately after the 15-minute procedure.
is an innovation in CT scanning technique that adds a three-dimensional view to the procedure," Dr.
More than 40 members of Congress have signed a letter urging the Centers for Medicare and Medicaid Services to cover computed tomography colonography (CTC), or virtual colonoscopy
The letter responded to a proposed decision by the CMS not to cover the noninvasive procedure because of what the agency considers to be insufficient evidence that it improves the health of Medicare patients.
* CTC or virtual colonoscopy
. In this imaging method, images are acquired via CT, and from these, computer graphics are generated for visualization of 2-D and 3-D views of the entire colon.
In another newer screening method already in use--CT colonography (virtual colonoscopy
)--radiologists use computed tomography (CT) scans to search for colorectal polyps.
These patents bring the number of iCAD's issued patents in 2007 to four, which includes two patents issued in June related to CAD billing workflow support and CAD for virtual colonoscopy