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Chin. Phys. B, 2008, Vol. 17(1): 328-334    DOI: 10.1088/1674-1056/17/1/058
CROSS DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY Prev   Next  

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; b Siemens Mindit MRI Center, Shenzhen 518112, China; c Medical 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.
Keywords:  steady-state free precession      fat suppression      phase-sensitive      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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