Projection-based features for reducing false positives in computer-aided detection of colonic polyps in CT colonography

2010 ◽  
Author(s):  
Hongbin Zhu ◽  
Matthew Barish ◽  
Perry Pickhardt ◽  
Yi Fan ◽  
Erica Posniak ◽  
...  
Keyword(s):  
Ct Colonography ◽  
Colonic Polyps ◽  
False Positives ◽  
Computer Aided Detection ◽  
Computer Aided

A Model-Driven Bayesian Method for Polyp Detection and False Positive Suppression in CT Colonography Computer-Aided Detection

2012 ◽  
pp. 220-237
Author(s):  
Xujiong Ye ◽  
Greg Slabaugh
Keyword(s):  
Ct Colonography ◽  
Colonic Polyps ◽  
Volume Effect ◽  
False Positives ◽  
Detection Sensitivity ◽  
Computer Aided Detection ◽  
Polyp Detection ◽  
Model Driven ◽  
Computer Aided ◽  
Overlap Ratio

This chapter presents an automated method to identify colonic polyps and suppress false positives for Computer-Aided Detection (CAD) in CT Colonography (CTC). The method formulates the problem of polyp detection as a probability calculation through a unified Bayesian statistical approach. The polyp likelihood is modeled with a combination of shape, intensity, and location features, while also taking into account the spatial prior probability encoded by a Markov Random Field. A second principal curvature PDE provides a shape model; and partial volume effect is incorporated in the intensity model. When evaluated on a large multi-center dataset of colonic CT scans, the CAD detection performance as well as the volume overlap ratio demonstrate the potential of the proposed method. The method results in an average 24% reduction of false positives with no impact on sensitivity. The method is also applicable to generation of initial candidates for CTC CAD with high detection sensitivity and relatively lower false positives, compared to other non-Bayesian methods.

scholarly journals Improved Curvature Estimation for Computer-aided Detection of Colonic Polyps in CT Colonography

2011 ◽  
Vol 18 (8) ◽  
pp. 1024-1034 ◽  
Author(s):  
Hongbin Zhu ◽  
Yi Fan ◽  
Hongbing Lu ◽  
Zhengrong Liang
Keyword(s):  
Ct Colonography ◽  
Colonic Polyps ◽  
Computer Aided Detection ◽  
Computer Aided ◽  
Curvature Estimation

Influence of Computer-Aided Detection False-Positives on Reader Performance and Diagnostic Confidence for CT Colonography

2009 ◽  
Vol 192 (6) ◽  
pp. 1682-1689 ◽  
Author(s):  
Stuart A. Taylor ◽  
John Brittenden ◽  
James Lenton ◽  
Hannah Lambie ◽  
Anthony Goldstone ◽  
...  
Keyword(s):  
Ct Colonography ◽  
False Positives ◽  
Computer Aided Detection ◽  
Diagnostic Confidence ◽  
Computer Aided

CT colonography: effect of computer-aided detection of colonic polyps as a second and concurrent reader for general radiologists with moderate experience in CT colonography

2014 ◽  
Vol 24 (7) ◽  
pp. 1466-1476 ◽  
Author(s):  
Thomas Mang ◽  
Luca Bogoni ◽  
Vikram X. Anand ◽  
Dass Chandra ◽  
Andrew J. Curtin ◽  
...  
Keyword(s):  
Ct Colonography ◽  
Colonic Polyps ◽  
Computer Aided Detection ◽  
Computer Aided
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