CT colonography practice in the UK: a national survey

Burling, David; Halligan, Steve; Taylor, Stuart A.; Usiskin, Sasha I; Bartram, Clive I.

doi:10.1016/j.crad.2003.09.008

Cited by 35 publications

(18 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…VC is also used to detect cancer in frail and immobile patients to avoid sedation during colonoscopy or the turning required during barium enema [14]. The use of VC in patients under surveillance following colo-rectal cancer surgery was also investigated [15,16].…”

Section: Current Clinical Indicationsmentioning

confidence: 99%

Virtual colonoscopy: clinical application

Laghi¹

2005

Eur Radiol Suppl

View full text Add to dashboard Cite

Virtual colonoscopy (VC), also known as computed tomography Colonography (CTC), is a non-invasive test for the examination of the colon based on volumetric, thin-collimation CT acquisition of a cleansed and air-distended colon. The technique is easy, less labour-intensive than barium enema and conventional colonoscopy, and is inherently safer. Several studies demonstrate the ability of VC in the detection of colonic neoplastic lesions, not only large carcinomas, but also polyps. Currently, the most widely accepted clinical indication is incomplete or unsuccessful colonoscopy, which may be the result of redundant colon, patient intolerance to the procedure, spasm not resolving even with the use of spasmolytics, obstructing colo-rectal cancer. VC is also used to detect cancer in frail and immobile patients to avoid sedation during colonoscopy or the turning required during barium enema. The use of VC in patients under surveillance following colo-rectal cancer surgery is under investigation. Further studies are necessary in order to assess the cost-effectiveness of this approach. For colo-rectal cancer screening, a practical approach is to consider VC as a currently credible alternative screening method and as a reasonable alternative to the other colo-rectal cancer screening tests when a patient is unable or unwilling to undergo conventional colonoscopy.

show abstract

Section: Current Clinical Indicationsmentioning

confidence: 99%

Virtual colonoscopy: clinical application

Laghi¹

2005

Eur Radiol Suppl

View full text Add to dashboard Cite

show abstract

“…48 CT colonography (also known as ''virtual colonoscopy'') is a relatively new diagnostic technology requiring expertise in its use. 49 A systematic review of studies comparing CT colonography with colonoscopy found that CT colonography was capable of correctly identifying most polyps over 10 mm in size. 50 …”

Section: Diagnosismentioning

confidence: 99%

Management of colorectal cancers

Lewis

2004

Quality and Safety in Health Care

View full text Add to dashboard Cite

“…Computerised tomography . Virtual colonoscopy Introduction CT colonography is used widely to detect colorectal neoplasia in both symptomatic and asymptomatic patients [1][2][3][4][5]. Compared to optical colonoscopy, CT colonography is minimally invasive, performed without sedation, and is associated with fewer complications [6][7][8][9].…”

mentioning

confidence: 99%

Polyp measurement and size categorisation by CT colonography: effect of observer experience in a multi-centre setting

Burling

Halligan

Altman³

et al. 2006

Eur Radiol

View full text Add to dashboard Cite

The extent measurement error on CT colonography influences polyp categorisation according to established management guidelines is studied using twenty-eight observers of varying experience to classify polyps seen at CT colonography as either 'medium' (maximal diameter 6-9 mm) or 'large' (maximal diameter 10 mm or larger). Comparison was then made with the reference diameter obtained in each patient via colonoscopy. The Bland-Altman method was used to assess agreement between observer measurements and colonoscopy, and differences in measurement and categorisation was assessed using Kruskal-Wallis and Chi-squared test statistics respectively. Observer measurements on average underestimated the diameter of polyps when compared to the reference value, by approximately 2-3 mm, irrespective of observer experience. Ninety-five percent limits of agreement were relatively wide for all observer groups, and had sufficient span to encompass different size categories for polyps. There were 167 polyp observations and 135 (81%) were correctly categorised. Of the 32 observations that were miscategorised, 5 (16%) were overestimations and 27 (84%) were underestimations (i.e. large polyps misclassified as medium). Caution should be exercised for polyps whose colonographic diameter is below but close to the 1-cm boundary threshold in order to avoid potential miscategorisation of advanced adenomas.

show abstract

CT colonography practice in the UK: a national survey

Cited by 35 publications

References 13 publications

Virtual colonoscopy: clinical application

Virtual colonoscopy: clinical application

Management of colorectal cancers

Polyp measurement and size categorisation by CT colonography: effect of observer experience in a multi-centre setting

Contact Info

Product

Resources

About