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Content Provider | IEEE Xplore Digital Library |
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Author | Changyu Sun Xiansheng Qin Lihui Wang Yuemin Zhu |
Copyright Year | 2011 |
Description | Author affiliation: Creatis, CNRS UMR 5220, Inserm 1044, INSA Lyon, University of Lyon, 69621 Villeurbanne, France (Lihui Wang; Yuemin Zhu) || School of Mechatronics, Northwestern Polytechnical University, Xi'an 710072, China (Changyu Sun; Xiansheng Qin) |
Abstract | Q-ball imaging (QBI) is a recent high angular resolution diffusion imaging technique for studying the orientation of fibers in the brain or heart, but it requires a high number of acquisitions, thus considerably lengthening acquisition time. Reducing diffusion data to be acquired while achieving the same fiber orientation reconstruction quality is then of fundamental importance. In this paper, we propose a new method of fiber orientation reconstruction from much less data acquisitions. The method is based on recovering missing diffusion data. It consists in imposing constraints both in q-space and in spatial space, applying data consistent principle in q-space, and iterating the process until no change is observed in the reconstructed orientation distribution function (ODF). The results show that using diffusion data in 12 directions, the reconstructed ODFs are rather close to those obtained with 42 diffusion directions, which allows shortening considerably acquisition time. |
Starting Page | 233 |
Ending Page | 237 |
File Size | 2210011 |
Page Count | 5 |
File Format | |
ISBN | 9781424493043 |
e-ISBN | 9781424493067 |
DOI | 10.1109/CISP.2011.6099994 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2011-10-15 |
Publisher Place | China |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Q-ball imaging Fourier transforms Image resolution interpolation Noise Magnetic resonance orientation distribution function Image reconstruction missing data Biomedical imaging fiber crossing |
Content Type | Text |
Resource Type | Article |
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