Phase-sensitive fat suppression steady-state free procession sequence with phase correction
Zu Zhong-Liang(俎中良)a), Zhou Kun(周堃)a), Zhang Shi-Gang(张仕刚)b), Gao Song(高嵩)a)c), and Bao Shang-Lian(包尚联)a)†
a Beijing City Key Laboratory of Medical Physics and Engineering, Peking University, Beijing 100871, China; bSiemens Mindit MRI Center, Shenzhen 518112, China; cMedical Physics Department, Health Science Center of Peking University, Beijing 100083, China
Abstract Robust and fast fat suppression is a challenge in balanced steady-state free precession (SSFP) magnetic resonance imaging. Although single-acquisition phase-sensitive SSFP can provide fat-suppressed images in short scan time, phase errors, especially spatially-dependent phase shift, caused by a variety of factors may result in misplacement of fat and water voxels. In this paper, a novel phase correction algorithm was used to calibrate those phase errors during image reconstruction. This algorithm corrects phase by region growing, employing both the magnitude and the phase information of image pixels. Phantom and in vivo imagings were performed to validate the technique. As a result, excellent fat-suppressed images were acquired by using single-acquisition phase-sensitive SSFP with phase correction.
Accepted manuscript online:
PACS:
87.61.-c
(Magnetic resonance imaging)
Fund: Project partially supported by the
National Natural Science Foundation of China (Grant Nos 10527003 and
60672104), the State Key Development Program for Basic Research of
China (Grant No 2006CB705700-05), Joint Research Foundation of
Beijing Education Com
Cite this article:
Zu Zhong-Liang(俎中良), Zhou Kun(周堃), Zhang Shi-Gang(张仕刚), Gao Song(高嵩), and Bao Shang-Lian(包尚联) Phase-sensitive fat suppression steady-state free procession sequence with phase correction 2008 Chin. Phys. B 17 328
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