18 March 2010 Contributions to ideal observer SNRs in propagation-based x-ray phase-contrast imaging
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Abstract
Propagation-based X-ray phase-contrast imaging permits the visualization of tissues that have very similar X-ray absorption properties and may benefit a variety of biomedical imaging applications. Unlike conventional radiographic contrast that is related to the projected absorption properties of tissue, image contrast in phasecontrast radiographs contains contributions from absorption-contrast and phase-contrast. In this work, we develop a general theoretical framework for assessing the contributions of these contrast mechanisms to signal detectability measures in propagation-based X-ray phase-contrast imaging. Specifically, concepts from signal detection theory are utilized to analyze the contributions of phase- and absorption-contrast to an ideal observer figure of merit for a signal-known-exactly/background-known exactly detection task.
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Mark A. Anastasio, Cheng-Ying Chou, Adam M. Zysk, Jovan G. Brankov, "Contributions to ideal observer SNRs in propagation-based x-ray phase-contrast imaging", Proc. SPIE 7622, Medical Imaging 2010: Physics of Medical Imaging, 76220S (18 March 2010); doi: 10.1117/12.844489; https://doi.org/10.1117/12.844489
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