CT colonography: automated measurement of colonic polyps compared with manual techniques--human in vitro study |
| |
Authors: | Taylor Stuart A Slater Andrew Halligan Steve Honeyfield Lesley Roddie Mary E Demeshski Jamshid Amin Hamdam Burling David |
| |
Institution: | Department of Imaging, University College Hospital, 2F Podium, 235 Euston Rd, London NW1 2BU, England. csytaylor@yahoo.co.uk |
| |
Abstract: | PURPOSE: To prospectively investigate the relative accuracy and reproducibility of manual and automated computer software measurements by using polyps of known size in a human colectomy specimen. MATERIALS AND METHODS: Institutional review board approval was obtained for the study; written consent for use of the surgical specimen was obtained. A colectomy specimen containing 27 polyps from a 16-year-old male patient with familial adenomatous polyposis was insufflated, submerged in a container with solution, and scanned at four-section multi-detector row computed tomography (CT). A histopathologist measured the maximum dimension of all polyps in the opened specimen. Digital photographs and line drawings were produced to aid CT-histologic measurement correlation. A novice (radiographic technician) and an experienced (radiologist) observer independently estimated polyp diameter with three methods: manual two-dimensional (2D) and manual three-dimensional (3D) measurement with software calipers and automated measurement with software (automatic). Data were analyzed with paired t tests and Bland-Altman limits of agreement. RESULTS: Seven polyps (
|
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
| 点击此处可从《Radiology》浏览原始摘要信息 |
| 点击此处可从《Radiology》下载免费的PDF全文 |