COMPARISON OF T-1 ESTIMATION TECHNIQUES IN CARDIAC MRI

被引：4

作者：

WALKER, PM

MARIE, PY

DANCHIN, N

BERTRAND, A

机构：

[1] Laboratoire de Biophysique, Faculté de Médecine, Université de Bourgogne

[2] Service de Cardiologie A, CHRU

[3] Service de Médecine Nucléaire, CHRU

来源：

MAGNETIC RESONANCE IMAGING | 1994年 / 12卷 / 01期

关键词：

CARDIAC MRI; T-1; TISSUE CHARACTERIZATION; QUALITY CONTROL;

D O I：

10.1016/0730-725X(94)92351-5

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

We have shown that the use of a simple combination of inversion recovery/spin-echo (IR/SE) sequences provides undeniably superior precision in quantitative in vivo myocardium T-1 estimation than the standard multiple spin-echo approach. On a group of 25 healthy subjects, the T-1 dispersion was, respectively, 3.8% for the IR/SE combination and 19.6% for the best SE pair combination. Moreover, repeated measurements were carried out on seven of the volunteers in order to assess T-1 reproducibility. The mean intra-individual T-1 precision was found to be 2.8% for the IR/SE pair and 20.0% for the best SE pair. The in vivo imaging work was supported and corroborated by a thorough treatment of the theoretical T-1 errors. We also highlight the importance of quality control in quantitative MRI; a correction being required in the SE sequences to bring measured signal intensities into line with those predicted from simple theory.

引用

页码：43 / 50

页数：8

共 14 条

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