Susceptibility-Weighted Imaging: Technical Aspects and Clinical Applications, Part 1

被引：792

作者：

Haacke, E. M. ^{[1
,2
]}

Mittal, S. ^{[3
]}

Wu, Z. ^{[4
]}

Neelavalli, J. ^{[2
]}

Cheng, Y. -C. N. ^{[1
,2
]}

机构：

[1] Wayne State Univ, Dept Radiol, Detroit, MI 48202 USA

[2] Wayne State Univ, Dept Biomed Engn, Detroit, MI USA

[3] Karmanos Canc Inst, Detroit, MI USA

[4] McMaster Univ, Dept Biomed Engn, Hamilton, ON, Canada

来源：

AMERICAN JOURNAL OF NEURORADIOLOGY | 2009年 / 30卷 / 01期

关键词：

RESOLUTION MR VENOGRAPHY; DIFFUSE AXONAL INJURY; IN-VIVO MEASUREMENT; MAGNETIC-SUSCEPTIBILITY; PHASE-BEHAVIOR; SIGNAL CHANGES; ACUTE STROKE; SPIN-ECHO; 1.5; TESLA; BRAIN;

D O I：

10.3174/ajnr.A1400

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

Susceptibility-weighted imaging (SWI) is a new neuroimaging technique, which uses tissue magnetic susceptibility differences to generate a unique contrast, different from that of spin density, T1, T2, and T2*. In this review (the first of 2 parts), we present the technical background for SWI. We discuss the concept of gradient-echo images and how we can measure local charges in susceptibility. Armed with this material, we introduce the steps required to transform the original magnitude and phase images into SWI data. The use of SWI filtered phase as a means to visualize and potentially quantify iron in the brain is presented. Advice for the correct interpretation of SWI data is discussed, and a set of recommended sequence parameters for different field strengths is given.

引用

页码：19 / 30

页数：12

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