
Proceedings Paper
Channelized relevance vector machine as a numerical observer for cardiac perfusion defect detection taskFormat | Member Price | Non-Member Price |
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Paper Abstract
In this paper, we present a numerical observer for image quality assessment, aiming to predict human observer accuracy
in a cardiac perfusion defect detection task for single-photon emission computed tomography (SPECT). In medical
imaging, image quality should be assessed by evaluating the human observer accuracy for a specific diagnostic task.
This approach is known as task-based assessment. Such evaluations are important for optimizing and testing imaging
devices and algorithms. Unfortunately, human observer studies with expert readers are costly and time-demanding. To
address this problem, numerical observers have been developed as a surrogate for human readers to predict human
diagnostic performance. The channelized Hotelling observer (CHO) with internal noise model has been found to predict
human performance well in some situations, but does not always generalize well to unseen data. We have argued in the
past that finding a model to predict human observers could be viewed as a machine learning problem. Following this
approach, in this paper we propose a channelized relevance vector machine (CRVM) to predict human diagnostic scores
in a detection task. We have previously used channelized support vector machines (CSVM) to predict human scores and
have shown that this approach offers better and more robust predictions than the classical CHO method. The comparison
of the proposed CRVM with our previously introduced CSVM method suggests that CRVM can achieve similar
generalization accuracy, while dramatically reducing model complexity and computation time.
Paper Details
Date Published: 3 March 2011
PDF: 7 pages
Proc. SPIE 7966, Medical Imaging 2011: Image Perception, Observer Performance, and Technology Assessment, 79660E (3 March 2011); doi: 10.1117/12.878176
Published in SPIE Proceedings Vol. 7966:
Medical Imaging 2011: Image Perception, Observer Performance, and Technology Assessment
David J. Manning; Craig K. Abbey, Editor(s)
PDF: 7 pages
Proc. SPIE 7966, Medical Imaging 2011: Image Perception, Observer Performance, and Technology Assessment, 79660E (3 March 2011); doi: 10.1117/12.878176
Show Author Affiliations
Mahdi M. Kalayeh, Illinois Institute of Technology (United States)
Thibault Marin, Illinois Institute of Technology (United States)
P. Hendrik Pretorius, Univ. of Massachusetts Medical School (United States)
Thibault Marin, Illinois Institute of Technology (United States)
P. Hendrik Pretorius, Univ. of Massachusetts Medical School (United States)
Miles N. Wernick, Illinois Institute of Technology (United States)
Yongyi Yang, Illinois Institute of Technology (United States)
Jovan G. Brankov, Illinois Institute of Technology (United States)
Yongyi Yang, Illinois Institute of Technology (United States)
Jovan G. Brankov, Illinois Institute of Technology (United States)
Published in SPIE Proceedings Vol. 7966:
Medical Imaging 2011: Image Perception, Observer Performance, and Technology Assessment
David J. Manning; Craig K. Abbey, Editor(s)
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