virtual colonoscopy

(redirected from CT Colonography)

virtual colonoscopy

n.
A screening examination of the colon in which x-rays obtained by CAT scan are used to generate computerized three-dimensional images of the colonic mucosa.

virtual colonoscopy

an imaging technique, used for examination of the colon, in which cross-sectional images acquired by computed tomography or magnetic resonance imaging are processed by computer to reconstruct a three-dimensional display of the colonic lumen.
A diagnostic procedure in which 2-dimensional helical CT images are converted into 3-dimensional images of the colonic mucosa similar to those obtained by conventional colonoscopy.

virtual colonoscopy

Imaging A diagnostic procedure in which 2-D helical CT images are converted into 3-D images of the colonic mucosa that are similar and an alternative to those obtained by conventional colonoscopy.
See Colonoscopy, CT colography, Double contrast barium enema.
References in periodicals archive ?
Computer-aided diagnosis scheme for detection of polyps at CT colonography.
The solutions are available for chest X-ray, chest computed tomography (CT), CT colonography, and magnetic resonance imaging (MRI) of the breast and prostate.
Orlando -- CT colonography continues to show promise as an adjunct to colonoscopy for colorectal cancer screening, according to study findings.
CHICAGO -- CT colonography can screen as reliably for osteoporosis as dual-energy x-ray absorptiometry and can be used to screen simultaneously for bone loss and colorectal cancer, a study of 35 patients suggests.
Which bowel cleansing method used for CT colonography has been found to result in less residual fluid in the colon lumen?
In a statement released in May, the agency wrote that the "evidence is inadequate to conclude that CT colonography is an appropriate colorectal cancer screening test.
The Centers for Medicare and Medicaid Services has proposed to refuse coverage of CT colonography for colorectal cancer screening.
I performed the first VC, also known as CT colonography (CTC), at the Wake Forest University Health Sciences Center in 1993.
CT colonography may be getting polyp sizes wrong, a problem that calls into question the reliability of CT colonography as a tool for colorectal cancer screening.
Specific tests include electron beam CT to detect coronary artery calcifications, spiral CT to detect lung cancer and CT colonography to detect colon cancer.