采用配对CPMG序列的扩散成像。

Diffusion imaging with paired CPMG sequences.

作者信息

Mulkern R V, Spencer R G

机构信息

Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115.

出版信息

Magn Reson Imaging. 1988 Nov-Dec;6(6):623-31. doi: 10.1016/0730-725x(88)90084-7.

DOI:10.1016/0730-725x(88)90084-7

PMID:2850432

Abstract

We report a method for mapping apparent diffusion coefficients using two interleaved CPMG sequences. Image slice selection is performed prior to each sequence, allowing the use of non-selective "hard" refocussing pulses. Phase cycling of the slice-selection process for each projection minimizes out-of-slice contributions to echo amplitudes. This permits an accurate evaluation of both T2 and apparent proton self-diffusion coefficients.

摘要

我们报告了一种使用两个交错的CPMG序列来绘制表观扩散系数的方法。图像切片选择在每个序列之前进行，允许使用非选择性的“硬”重聚焦脉冲。每个投影的切片选择过程的相位循环可将切片外对回波幅度的贡献降至最低。这使得能够准确评估T2和表观质子自扩散系数。