
Proceedings Paper
Detection performance study for cone-beam differential phase contrast CTFormat | Member Price | Non-Member Price |
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Paper Abstract
X-ray phase sensitive imaging methods have seen tremendous growth and increased interest in recent years. Each
method has its advantages and disadvantages, but all have shown the ability to improve the detection of various
objects because of the additional phase measurements. Of the various methods, grating-based differential phase
contrast computed tomography (DPC-CT) imaging has shown greater quantitative and diagnostic capabilities
than traditional absorption CT. Although it has been shown that
DPC-CT provides superior contrast of certain
materials, one question has not been fully addressed to date is whether DPC-CT can provide improved accuracy
in detecting low contrast masses using the same radiation dose as that given in absorption CT. The detectability
is not only related to contrast to noise ratio, but also to the noise texture. The purpose of this study is to
investigate how the peculiar noise texture found in cone-beam DPC-CT affects low contrast objects' detectability
through human observer ROC analysis. Studies for both axial and sagittal planes were carried out, as both could
potentially be used in clinical practice for a 3D image. The results demonstrate that noise texture found in conebeam
DPC-CT strongly affects human visual perception, and that object detectabilities in axial and sagittal
images of DPC-CT are different.
Paper Details
Date Published: 23 February 2012
PDF: 6 pages
Proc. SPIE 8313, Medical Imaging 2012: Physics of Medical Imaging, 83131L (23 February 2012); doi: 10.1117/12.911593
Published in SPIE Proceedings Vol. 8313:
Medical Imaging 2012: Physics of Medical Imaging
Norbert J. Pelc; Robert M. Nishikawa; Bruce R. Whiting, Editor(s)
PDF: 6 pages
Proc. SPIE 8313, Medical Imaging 2012: Physics of Medical Imaging, 83131L (23 February 2012); doi: 10.1117/12.911593
Show Author Affiliations
Ke Li, Univ. of Wisconsin-Madison (United States)
Nicholas Bevins, Univ. of Wisconsin-Madison (United States)
Joseph Zambelli, Univ. of Wisconsin-Madison (United States)
Nicholas Bevins, Univ. of Wisconsin-Madison (United States)
Joseph Zambelli, Univ. of Wisconsin-Madison (United States)
Zhihua Qi, Univ. of Wisconsin-Madison (United States)
Guang-Hong Chen, Univ. of Wisconsin-Madison (United States)
Guang-Hong Chen, Univ. of Wisconsin-Madison (United States)
Published in SPIE Proceedings Vol. 8313:
Medical Imaging 2012: Physics of Medical Imaging
Norbert J. Pelc; Robert M. Nishikawa; Bruce R. Whiting, Editor(s)
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