一种从核磁共振测量估计T2分布的新方法。

A new method for estimating T2 distributions from NMR measurements.

作者信息

Miller A, Chen S, Georgi D T, Vozoff K

机构信息

HarbourDom Consulting, Sydney, Australia.

出版信息

Magn Reson Imaging. 1998 Jun-Jul;16(5-6):617-9. doi: 10.1016/s0730-725x(98)00041-1.

DOI:10.1016/s0730-725x(98)00041-1

PMID:9803922

Abstract

A semi-continuous relaxation model is constructed using sums of gamma functions and non-negative least squares for the inversion of Carr-Purcell-Meiboom-Gill (CPMG) echo data. No regularization is necessary for this approach, and yet the solution is stable even with noisy data. Test results derived from 60 echo trains are presented. Computational advantages of the method are presented.

摘要

利用伽马函数之和与非负最小二乘法构建了一个半连续松弛模型，用于反演 Carr-Purcell-Meiboom-Gill（CPMG）回波数据。该方法无需正则化，即便数据存在噪声，解依然稳定。给出了源自60个回波序列的测试结果，并展示了该方法的计算优势。