Magnetic Resonance Acoustic Radiation Force Imaging (MR-ARFI)

被引：0
|
作者：
Odeen, Henrik [1 ,2 ]
Payne, Allison H. [2 ]
Parker, Dennis L. [2 ]
机构：
[1] Utah Ctr Adv Imaging Res, 729 Arapeen Dr, Salt Lake City, UT 84108 USA
[2] Univ Utah, Dept Radiol & Imaging Sci, Salt Lake City, UT USA
来源：
JOURNAL OF MAGNETIC RESONANCE IMAGING | 2025年
关键词：
acoustic radiation force imaging; ARFI; MR-ARFI; focused ultrasound; high intensity focused ultrasound; thermal therapy; FOCUSED ULTRASOUND NEUROMODULATION; IMPULSE DIFFRACTION FIELD; IN-VIVO; TISSUE DISPLACEMENT; THERMOMETRY; TEMPERATURE; ELASTOGRAPHY; FEASIBILITY; CONTRAST; ABLATION;
D O I：
10.1002/jmri.29712
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：
This review covers the theoretical background, pulse sequence considerations, practical implementations, and multitudes of applications of magnetic resonance acoustic radiation force imaging (MR-ARFI) described to date. MR-ARFI is an approach to encode tissue displacement caused by the acoustic radiation force of a focused ultrasound field into the phase of a MR image. The displacement encoding is done with motion encoding gradients (MEG) which have traditionally been added to spin echo-type and gradient recalled echo-type pulse sequences. Many different types of MEG (monopolar, bipolar, tripolar etc.) have been described and pros and cons are discussed. We further review studies investigating the safety of MR-ARFI, as well as approaches to simulate the MR-ARFI displacement. Lastly, MR-ARFI applications such as for focal spot localization, tissue stiffness interrogation following thermal ablation, trans-skull aberration correction, and simultaneous MR-ARFI and MR thermometry are discussed.Evidence LevelN/ATechnical EfficacyStage 1
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页数：20
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