Diffusion-weighted echo planar imaging in patients with recent myocardial infarction
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Jean-François Deux & Mezri Maatouk & Alexandre Vignaud & Alain Luciani & Grégory Lenczner & Julie Mayer & Pasca
- چاپ و سال / کشور: 2010
Description
Objective To evaluate a diffusion-weighted (DW) black blood MR sequence for the detection of myocardium signal abnormalities in patients with recent myocardial infarction (MI). Methods A DW black blood EPI sequence was acquired at 1.5 T in 12 patients with recent MI. One slice per patient was acquired with b=0 and b=50 s/mm2. A standard short tau inversion recovery (STIR) T2-weighted sequence was acquired at the same level. Viability was assessed with delayedenhancement sequences. Images were analyzed qualitatively and quantitatively. A non parametric Wilcoxon test was used for statistical analysis, with a significance level of P<.05. Results The mean quality of blood suppression was higher on DW EPI images than on STIR T2-weighted images (3.9±0.3 and 3.0±0.7, respectively; P=0.01). Myocardial high signal areas were detected in respectively 100% (12/12) and 67% (8/12) of the patients on DW EPI and STIR T2-weighted images. The four patients (33%) with false-negative STIR T2 findings all had high signal areas on DW EPI images corresponding to the location of the MI on the delayedenhanced images. Conclusion DW EPI sequences are a feasible alternative to standard STIR T2-weighted sequences for detecting myocardium high signal areas in patients with recent MI.
Eur Radiol (2011) 21:46–53 DOI 10.1007/s00330-010-1912-6 Received: 9 April 2010 / Revised: 24 June 2010 / Accepted: 16 July 2010 / Published online: 1 August 2010
