Share Email Print
cover

Proceedings Paper

Computer-aided detection of small bowel strictures in CT enterography
Author(s): Nisha I. Sainani; Janne J. Näppi; Dushyant V. Sahani; Hiroyuki Yoshida
Format Member Price Non-Member Price
PDF $17.00 $21.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The workflow of CT enterography in an emergency setting could be improved significantly by computer-aided detection (CAD) of small bowel strictures to enable even non-expert radiologists to detect sites of obstruction rapidly. We developed a CAD scheme to detect strictures automatically from abdominal multi-detector CT enterography image data by use of multi-scale template matching and a blob detector method. A pilot study was performed on 15 patients with 22 surgically confirmed strictures to study the effect of the CAD scheme on observer performance. The 77% sensitivity of an inexperienced radiologist assisted by CAD was comparable with the 81% sensitivity of an unaided expert radiologist (p=0.07). The use of CAD reduced the reading time to identify strictures significantly (p<0.0001). Most of the false-positive CAD detections were caused by collapsed bowel loops, approximated bowel wall, muscles, or vessels, and they were easy to dismiss. The results indicate that CAD could provide radiologists with a rapid and accurate interpretation of strictures to improve workflow in an emergency setting.

Paper Details

Date Published: 9 March 2011
PDF: 6 pages
Proc. SPIE 7963, Medical Imaging 2011: Computer-Aided Diagnosis, 79632J (9 March 2011); doi: 10.1117/12.878232
Show Author Affiliations
Nisha I. Sainani, Massachusetts General Hospital and Harvard Medical School (United States)
Janne J. Näppi, Massachusetts General Hospital and Harvard Medical School (United States)
Dushyant V. Sahani, Massachusetts General Hospital and Harvard Medical School (United States)
Hiroyuki Yoshida, Massachusetts General Hospital and Harvard Medical School (United States)


Published in SPIE Proceedings Vol. 7963:
Medical Imaging 2011: Computer-Aided Diagnosis
Ronald M. Summers M.D.; Bram van Ginneken, Editor(s)

© SPIE. Terms of Use
Back to Top