Ultrafast multi-slice MRI with segmented spatiotemporal encoding
Ting Zhang1, Congbo Cai2, Lin Chen1, Jianpan Huang1, and Shuhui Cai1
1Department of Electronic Science, Xiamen University, Xiamen, China, People's Republic of, 2Department of Communication Engineering, Xiamen University, Xiamen, China, People's Republic of
As a recently launched method, spatiotemporally
encoded (SPEN) magnetic resonance imaging (MRI) has been broadened from
single-slice scan to multi-slice scan. A new single-shot multi-slice full-refocusing
SPEN MRI sequence was proposed. By utilizing a segment-selective pulse and a
180° chirp pulse and sequentially acquiring the signals of every slice among
the encoded segment, the new method can lower the
specific absorption rate (SAR) and improve the image quality compared to the
existing one. Experimental results of phantom and in vivo rat brain verified
the above conclusion.
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