ACUT2E TSE-SSFP:: A hybrid method for T2-weighted Imaging of edema in the heart

被引：101

作者：

Aletras, Anthony H. ^{[1
]}

Kellman, Peter ^{[1
]}

Derbyshire, J. Andrew ^{[1
]}

Arai, Andrew E. ^{[1
]}

机构：

[1] NHLBI, NIH, LCE, US Dept Hlth & Human Serv, Bethesda, MD 20892 USA

来源：

MAGNETIC RESONANCE IN MEDICINE | 2008年 / 59卷 / 02期

关键词：

edema; infarction; T2; ACUT(2)E; ACUTE; C-TIDE; myocardium; heart;

D O I：

10.1002/mrm.21490

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：

ACUT(2)E TSE-SSFP is a hybrid between steady state free precession (SSFP) and turbo spin echo (TSE) for bright-blood T2-weighted imaging with signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) similar to dark-blood TSE. TSE-SSFP uses a segmented SSFP readout during diastole with 180 pulses following a 90 preparation. The 180 refocusing pulses make TSE-SSFP similar to TSE but TSE-SSFP uses gradient moment nulling, whereas TSE uses gradient crushing. TSE-SSFP produced T2-weighted images with minimal T1 weighting. TSE-SSFP and TSE had similar SNR (155.9 +/- 6.0 vs 160.9 +/- 7.0; P = NS) for acute myocardial infarction (MI) and twice the SNR of T2-prepared SSFP (73.1 +/- 3.4, P < 0.001). TSE-SSFP and TSE had approximately double the CNR of T2-prepared SSFP for differentiating acute MI from normal myocardium. Imperfect blood suppression, present in all animals on some TSE images, was a problem eliminated by TSE-SSFP and T2-prepared SSFP.

引用

页码：229 / 235

页数：7

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