Flexible reduced field of view magnetic resonance imaging based on single-shot spatiotemporally encoded technique

doi:10.1088/1674-1056/24/10/108703

中国物理B ›› 2015, Vol. 24 ›› Issue (10): 108703-108703.doi: 10.1088/1674-1056/24/10/108703

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

Flexible reduced field of view magnetic resonance imaging based on single-shot spatiotemporally encoded technique

李敬^a, 蔡聪波^b, 陈林^a, 陈颖^c, 屈小波^a, 蔡淑惠^a

a Department of Electronics Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen 361005, China;
b Department of Communication Engineering, Xiamen University, Xiamen 361005, China;
c Center for Brain Imaging Science and Technology, Zhejiang University, Hangzhou 310058, China

收稿日期:2015-05-13 修回日期:2015-06-12 出版日期:2015-10-05 发布日期:2015-10-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11474236, 81171331, and U1232212).

Flexible reduced field of view magnetic resonance imaging based on single-shot spatiotemporally encoded technique

Li Jing (李敬)^a, Cai Cong-Bo (蔡聪波)^b, Chen Lin (陈林)^a, Chen Ying (陈颖)^c, Qu Xiao-Bo (屈小波)^a, Cai Shu-Hui (蔡淑惠)^a

a Department of Electronics Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen 361005, China;
b Department of Communication Engineering, Xiamen University, Xiamen 361005, China;
c Center for Brain Imaging Science and Technology, Zhejiang University, Hangzhou 310058, China

Received:2015-05-13 Revised:2015-06-12 Online:2015-10-05 Published:2015-10-05
Contact: Cai Shu-Hui E-mail:shcai@xmu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11474236, 81171331, and U1232212).

摘要/Abstract

摘要：

In many ultrafast imaging applications, the reduced field-of-view (rFOV) technique is often used to enhance the spatial resolution and field inhomogeneity immunity of the images. The stationary-phase characteristic of the spatiotemporally-encoded (SPEN) method offers an inherent applicability to rFOV imaging. In this study, a flexible rFOV imaging method is presented and the superiority of the SPEN approach in rFOV imaging is demonstrated. The proposed method is validated with phantom and in vivo rat experiments, including cardiac imaging and contrast-enhanced perfusion imaging. For comparison, the echo planar imaging (EPI) experiments with orthogonal RF excitation are also performed. The results show that the signal-to-noise ratios of the images acquired by the proposed method can be higher than those obtained with the rFOV EPI. Moreover, the proposed method shows better performance in the cardiac imaging and perfusion imaging of rat kidney, and it can scan one or more regions of interest (ROIs) with high spatial resolution in a single shot. It might be a favorable solution to ultrafast imaging applications in cases with severe susceptibility heterogeneities, such as cardiac imaging and perfusion imaging. Furthermore, it might be promising in applications with separate ROIs, such as mammary and limb imaging.

关键词: magnetic resonance imaging, spatiotemporal encoding, single shot, reduced field-of-view

Abstract:

Key words: magnetic resonance imaging, spatiotemporal encoding, single shot, reduced field-of-view

中图分类号: (Magnetic resonance imaging)

87.61.-c

87.61.Bj (Theory and principles) 87.61.Hk (Pulse sequences)

李敬, 蔡聪波, 陈林, 陈颖, 屈小波, 蔡淑惠. Flexible reduced field of view magnetic resonance imaging based on single-shot spatiotemporally encoded technique[J]. 中国物理B, 2015, 24(10): 108703-108703.

Li Jing (李敬), Cai Cong-Bo (蔡聪波), Chen Lin (陈林), Chen Ying (陈颖), Qu Xiao-Bo (屈小波), Cai Shu-Hui (蔡淑惠). Flexible reduced field of view magnetic resonance imaging based on single-shot spatiotemporally encoded technique[J]. Chin. Phys. B, 2015, 24(10): 108703-108703.

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Flexible reduced field of view magnetic resonance imaging based on single-shot spatiotemporally encoded technique

Flexible reduced field of view magnetic resonance imaging based on single-shot spatiotemporally encoded technique

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