Computed tomographic colonography
In medicine, computed tomographic colonography, also called CT colonography and virtual colonoscopy, is a "non-invasive imaging method that uses computed tomographic data combined with specialized imaging software to examine the colon."[1]
A clinical practice guideline by the US Preventive Services Task Force (USPSTF) gave a grade I recommendation for CT colongraphy in screening for colorectal cancer stating "the evidence is insufficient to assess the benefits and harms of computed tomographic colonography."[2][3] The most recent study used by the systematic review for this clinical practice guideline was in 2008.[4] According to the Task Force, the accuracy of CT colonography is: For adenomas at least 10 mm in size
- sensitivity = 92%
- specificity is uncertain and ranges from 88 to 96%
For adenomas at smaller than 10 mm in size
- sensitivity is uncertain and ranges from 65[4] to 89%
- specificity is uncertain and ranges from 80 to 88%
References
- ↑ Anonymous (2024), Computed tomographic colonography (English). Medical Subject Headings. U.S. National Library of Medicine.
- ↑ U.S. Preventive Services Task Force (October 2008). "Screening for Colorectal Cancer: U.S. Preventive Services Task Force Recommendation Statement". Annals of internal medicine. PMID 18838716. [e]
- ↑ Whitlock EP, Lin JS, Liles E, Beil TL, Fu R (October 2008). "Screening for Colorectal Cancer: A Targeted, Updated Systematic Review for the U.S. Preventive Services Task Force". Annals of internal medicine. PMID 18838718. [e]
- ↑ 4.0 4.1 Johnson CD, Chen MH, Toledano AY, et al (September 2008). "Accuracy of CT colonography for detection of large adenomas and cancers". The New England journal of medicine 359 (12): 1207–17. DOI:10.1056/NEJMoa0800996. PMID 18799557. Research Blogging.