We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Automated mass detection in contrast-enhanced CT colonography: an approach based on contrast and volume.
- Authors
Luboldt, W.; Tryon, C.; Kroll, M.; Toussaint, T.; Holzer, K.; Hoepffner, N.; Vogl, T. J.; Toussaint, T L
- Abstract
The purpose of this feasibility study was to design and test an algorithm for automating mass detection in contrast-enhanced CT colonography (CTC). Five patients with known colorectal masses underwent a pre-surgical contrast-enhanced (120 ml volume 1.6 g iodine/s injection rate, 60 s scan delay) CTC in high spatial resolution (16-slice CT: collimation: 16x0.75 mm, tablefeed: 24 mm/0.5 s, reconstruction increment: 0.5 mm). A CT-density- and volume-based algorithm searched for masses in the colonic wall, which was extracted before by segmenting and dilating the colonic air lumen and subtracting the inner air. A radiologist analyzed the detections and causes of false positives. All masses were detected, and false positives were easy to identify. Combining CT density with volume as a cut-off is a promising approach for automating mass detection that should be further refined and also tested in contrast-enhanced MR colonography. More information under http://www.screening.info.
- Subjects
COLON cancer; TOMOGRAPHY; DIAGNOSIS; ALGORITHMS; GASTROINTESTINAL system; RADIOLOGY; AUTOMATION; COLON tumors; DIAGNOSTIC imaging; COMPUTERS in medicine; RECTUM tumors; PILOT projects; VIRTUAL colonoscopy; CONTRAST media; COMPUTER-aided diagnosis
- Publication
European Radiology, 2005, Vol 15, Issue 2, p247
- ISSN
0938-7994
- Publication type
journal article
- DOI
10.1007/s00330-004-2497-8