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Proceedings Paper

Toward the detection of abnormal chest radiographs the way radiologists do it
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Paper Abstract

Computer Aided Detection (CADe) and Computer Aided Diagnosis (CADx) are relatively recent areas of research that attempt to employ feature extraction, pattern recognition, and machine learning algorithms to aid radiologists in detecting and diagnosing abnormalities in medical images. However, these computational methods are based on the assumption that there are distinct classes of abnormalities, and that each class has some distinguishing features that set it apart from other classes. However, abnormalities in chest radiographs tend to be very heterogeneous. The literature suggests that thoracic (chest) radiologists develop their ability to detect abnormalities by developing a sense of what is normal, so that anything that is abnormal attracts their attention. This paper discusses an approach to CADe that is based on a technique called anomaly detection (which aims to detect outliers in data sets) for the purpose of detecting atypical regions in chest radiographs. However, in order to apply anomaly detection to chest radiographs, it is necessary to develop a basis for extracting features from corresponding anatomical locations in different chest radiographs. This paper proposes a method for doing this, and describes how it can be used to support CADe.

Paper Details

Date Published: 9 March 2011
PDF: 10 pages
Proc. SPIE 7963, Medical Imaging 2011: Computer-Aided Diagnosis, 796337 (9 March 2011); doi: 10.1117/12.878256
Show Author Affiliations
Mohammad Alzubaidi, CUbiC, Arizona State Univ. (United States)
Ameet Patel, Mayo Clinic (United States)
Sethuraman Panchanathan, CUbiC, Arizona State Univ. (United States)
John A. Black Jr., CUbiC, Arizona State Univ. (United States)

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

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