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Virtual endoscopy--comparison with colonoscopy in the detection of space-occupying lesions of the colon.
Endoscopy. 2000 Mar; 32(3):226-32.E

Abstract

BACKGROUND AND STUDY AIMS

A new technique has been described which combines abdominal helical computed tomography (CT) scanning and virtual reality computer technology, known as virtual colonoscopy (VC); the reconstructed images provide a simulation of the interior of the colon as viewed by endoscopy. We compared VC with conventional colonoscopy in patients with suspected or known colonic neoplasia.

PATIENTS AND METHODS

A total of 38 patients, in whom there was a high likelihood of colonic polyps or cancer, underwent a noncontrast helical CT scan of the abdomen and pelvis after regular colonoscopy bowel preparation. The images were reconstructed into a VC presentation and compared with the subsequent conventional colonoscopy in a blinded manner.

RESULTS

Conventional colonoscopy identified a total of 24 polyps 5 mm or greater. VC correctly identified five of 13 polyps 5-9 mm in size, and ten of 11 lesions greater than or equal to 10 mm in diameter. The reasons for four missed lesions were identified as being secondary to a collapsed rectum in two patients and stool in the right colon in two patients. The sensitivity and specificity per patient of VC for lesions greater than or equal to 5 mm were 66.7% and 75.0% respectively, and for lesions greater than 1 cm were 90.0% and 82.1%, respectively.

CONCLUSIONS

Virtual colonoscopy is feasible, well tolerated, and capable of detecting most lesions greater than 10 mm in diameter. This technique is continuing to be developed and warrants further evaluation as a diagnostic and screening tool in colorectal neoplasia.

Authors+Show Affiliations

Department of Radiology, Digestive Disease Center, Medical University of South Carolina, Charleston, USA. kaycl44@hotmail.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

10718388

Citation

Kay, C L., et al. "Virtual Endoscopy--comparison With Colonoscopy in the Detection of Space-occupying Lesions of the Colon." Endoscopy, vol. 32, no. 3, 2000, pp. 226-32.
Kay CL, Kulling D, Hawes RH, et al. Virtual endoscopy--comparison with colonoscopy in the detection of space-occupying lesions of the colon. Endoscopy. 2000;32(3):226-32.
Kay, C. L., Kulling, D., Hawes, R. H., Young, J. W., & Cotton, P. B. (2000). Virtual endoscopy--comparison with colonoscopy in the detection of space-occupying lesions of the colon. Endoscopy, 32(3), 226-32.
Kay CL, et al. Virtual Endoscopy--comparison With Colonoscopy in the Detection of Space-occupying Lesions of the Colon. Endoscopy. 2000;32(3):226-32. PubMed PMID: 10718388.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Virtual endoscopy--comparison with colonoscopy in the detection of space-occupying lesions of the colon. AU - Kay,C L, AU - Kulling,D, AU - Hawes,R H, AU - Young,J W, AU - Cotton,P B, PY - 2000/3/16/pubmed PY - 2000/3/16/medline PY - 2000/3/16/entrez SP - 226 EP - 32 JF - Endoscopy JO - Endoscopy VL - 32 IS - 3 N2 - BACKGROUND AND STUDY AIMS: A new technique has been described which combines abdominal helical computed tomography (CT) scanning and virtual reality computer technology, known as virtual colonoscopy (VC); the reconstructed images provide a simulation of the interior of the colon as viewed by endoscopy. We compared VC with conventional colonoscopy in patients with suspected or known colonic neoplasia. PATIENTS AND METHODS: A total of 38 patients, in whom there was a high likelihood of colonic polyps or cancer, underwent a noncontrast helical CT scan of the abdomen and pelvis after regular colonoscopy bowel preparation. The images were reconstructed into a VC presentation and compared with the subsequent conventional colonoscopy in a blinded manner. RESULTS: Conventional colonoscopy identified a total of 24 polyps 5 mm or greater. VC correctly identified five of 13 polyps 5-9 mm in size, and ten of 11 lesions greater than or equal to 10 mm in diameter. The reasons for four missed lesions were identified as being secondary to a collapsed rectum in two patients and stool in the right colon in two patients. The sensitivity and specificity per patient of VC for lesions greater than or equal to 5 mm were 66.7% and 75.0% respectively, and for lesions greater than 1 cm were 90.0% and 82.1%, respectively. CONCLUSIONS: Virtual colonoscopy is feasible, well tolerated, and capable of detecting most lesions greater than 10 mm in diameter. This technique is continuing to be developed and warrants further evaluation as a diagnostic and screening tool in colorectal neoplasia. SN - 0013-726X UR - https://www.unboundmedicine.com/medline/citation/10718388/Virtual_endoscopy__comparison_with_colonoscopy_in_the_detection_of_space_occupying_lesions_of_the_colon_ L2 - http://www.thieme-connect.com/DOI/DOI?10.1055/s-2000-100 DB - PRIME DP - Unbound Medicine ER -