Magnetic Resonance Acoustic Radiation Force Imaging (MR-ARFI)

IF 3.5 2区医学 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Journal of Magnetic Resonance Imaging Pub Date : 2025-01-22 DOI:10.1002/jmri.29712

Henrik Odéen PhD, Allison H. Payne PhD, Dennis L. Parker PhD

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Abstract

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 Level

N/A

Technical Efficacy

Stage 1

Abstract Image

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磁共振声辐射成像（MR-ARFI）。

本文综述了迄今为止磁共振声辐射力成像（MR-ARFI）的理论背景、脉冲序列考虑、实际实现和众多应用。MR- arfi是一种将聚焦超声场的声辐射力引起的组织位移编码为MR图像相位的方法。位移编码是用运动编码梯度（MEG）来完成的，运动编码梯度传统上是添加到自旋回波型和梯度召回回波型脉冲序列中。描述了许多不同类型的磁磁图（单极、双极、三极等），并讨论了优缺点。我们进一步回顾研究MR-ARFI的安全性，以及模拟MR-ARFI位移的方法。最后，讨论了MR- arfi在焦点点定位、热消融后组织刚度询问、跨颅骨畸变校正以及MR- arfi和MR温度测量等方面的应用。证据等级：无技术功效：第1阶段。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Magnetic Resonance Imaging 医学-核医学

CiteScore

9.70

自引率

6.80%

发文量

494

审稿时长

2 months

期刊介绍： The Journal of Magnetic Resonance Imaging (JMRI) is an international journal devoted to the timely publication of basic and clinical research, educational and review articles, and other information related to the diagnostic applications of magnetic resonance.