BLOCK REGIONAL INTERPOLATION SCHEME FOR K-SPACE (BRISK) - A RAPID CARDIAC IMAGING TECHNIQUE
BLOCK REGIONAL INTERPOLATION SCHEME FOR K-SPACE (BRISK) - A RAPID CARDIAC IMAGING TECHNIQUE
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DOI：
10.1002/mrm.1910330204
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发表时间：
1995-02-01
影响因子：
3.3
通讯作者：
POHOST, GM
中科院分区：
文献类型：
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作者：
DOYLE, M;WALSH, EG;POHOST, GM
我们引入了一种采集方法，“k 空间块区域插值方案”（BRISK），以减少心脏成像的采集时间。该方法利用了时间分辨心脏图像之间存在的高度相关性。对于代表性的 k 空间数据集，沿着心脏相位维度应用傅立叶分析，以揭示可以以不同的速率对 k 空间的不同区域进行有效采样。实施减少采样策略，并通过傅立叶插值生成未采样点。节省高达 75% 的时间是非常可行的，25% BRISK 扫描与 100% 扫描相比效果很好。介绍了使用正常志愿者和患者进行的模拟和采集。
We introduce an acquisition method, ''block regional interpolation scheme for k-space'' (BRISK), to reduce the acquisition time for cardiac imaging. The method exploits the high degree of correlation that exists between time-resolved cardiac images. For representative k-space data sets, Fourier analysis was applied along the cardiac phase dimension to reveal that different regions of k-space can be effectively sampled at different rates. A reduced sampling strategy was implemented, and unsampled points were generated by Fourier interpolation. Time savings of up to 75% are quite feasible and 25% BRISK scans compare well with 100% scans. Simulations and acquisitions using a normal volunteer and patients are presented.