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MAPS——一种用于高场小口径磁共振成像增强成像的魔角定位系统。

MAPS - a Magic Angle Positioning System for Enhanced Imaging in High-Field Small-Bore MRI.

作者信息

Squires Alexander, Chan Kevin C, Ho Leon C, Sigal Ian A, Jan Ning-Jiun, Tse Zion Tsz Ho

机构信息

Medical Robotics Lab, College of Engineering, The University of Georgia, Athens, GA, USA.

UPMC Eye Center, Ophthalmology and Visual Science Research Center, Department of Ophthalmology, School of Medicine.

出版信息

J Med Robot Res. 2016 Mar;1(1). doi: 10.1142/S2424905X16400043. Epub 2016 Mar 31.

DOI:10.1142/S2424905X16400043
PMID:28713864
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5507598/
Abstract

The "magic angle" MRI effect can enhance signal intensity in aligned collagenous structures oriented at approximately 55° with respect to the main magnetic field. The difficulty of positioning tissue inside closed-bore scanners has hampered magic angle use in research and clinics. An MRI-conditional mechatronic system has been developed to control sample orientation inside a 9.4T small bore MRI scanner. The system orients samples to within 0.5° and enables a 600% increase in tendon signal intensity.

摘要

“魔角”磁共振成像（MRI）效应可增强与主磁场呈约55°排列的胶原结构中的信号强度。将组织放置在封闭孔径扫描仪内的困难阻碍了魔角在研究和临床中的应用。现已开发出一种MRI条件下的机电一体化系统，用于控制9.4T小口径MRI扫描仪内样本的方向。该系统可将样本方向定位在0.5°以内，并使肌腱信号强度提高600%。

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