期刊
MAGNETIC RESONANCE IN MEDICINE
卷 53, 期 1, 页码 194-200出版社
WILEY
DOI: 10.1002/mrm.20333
关键词
MRI; delayed enhancement; heart; myocardial infarction; phase sensitive; SENSE; parallel MRI; free-breathing; motion correction
资金
- NATIONAL HEART, LUNG, AND BLOOD INSTITUTE [Z01HL004607, Z01HL004608, Z01HL004609] Funding Source: NIH RePORTER
- Intramural NIH HHS [Z01 HL004608-08] Funding Source: Medline
Following administration of Gd-DTPA, infarcted myocardium exhibits delayed enhancement and can be imaged using an inversion-recovery sequence. A conventional segmented acquisition requires a number of breath-holds to image the heart. Single-shot phase-sensitive inversion-recovery (PSIR) true-FISP may be combined with parallel imaging using SENSE to achieve high spatial resolution. SNR may be improved by averaging multiple motion-corrected images acquired during free breathing. PSIR techniques have demonstrated a number of benefits including consistent contrast and appearance over a relatively wide range of inversion recovery times (TI), improved contrast-to-noise ratio, and consistent size of the enhanced region. Comparison between images acquired using segmented breath-held turbo-FLASH and averaged, motion-corrected, free-breathing true-FISP show excellent agreement of measured CNR and infarct size. In this study, motion correction was implemented using image registration postprocessing rather than navigator correction of individual frames. Navigator techniques may be incorporated as well. Published 2004 Wiley-Liss, Inc.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据