Artifact suppression in imaging of myocardial infarction using B1-weighted phased-array combined phase-sensitive inversion recovery

被引：15

作者：

Kellman, P ^{[1
]}

Dyke, CK ^{[1
]}

Aletras, AH ^{[1
]}

McVeigh, ER ^{[1
]}

Arai, AE ^{[1
]}

机构：

[1] NHLBI, Cardiac Energet Lab, NIH, DHHS, Bethesda, MD 20892 USA

来源：

MAGNETIC RESONANCE IN MEDICINE | 2004年 / 51卷 / 02期

关键词：

MRI; artifact; delayed hyperenhancement; heart; myocardial infarction; phased array; cerebrospinal fluid (CSF); phase-sensitive;

D O I：

10.1002/mrm.10689

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：

Regions of the body with long T-1, such as cerebrospinal fluid (CSF), may create ghost artifacts on gadolinium-hyperenhanced images of myocardial infarction when inversion recovery (IR) sequences are used with a segmented acquisition. Oscillations in the transient approach to steady state for regions with long T-1 may cause ghosts, with the number of ghosts being equal to the number of segments. B-1-weighted phased-array combining provides an inherent degree of ghost artifact suppression because the ghost artifact is weighted less than the desired signal intensity by the coil sensitivity profiles. Example images are shown that illustrate the suppression of CSF ghost artifacts by the use of B-1-weighted phased-array combining of multiple receiver coils. Published 2004 Wiley-Liss, Inc.dagger

引用

页码：408 / 412

页数：5

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