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Development of custom-made RF coil for magnetic resonance velocimeter with a high spatial resolution

Title
Development of custom-made RF coil for magnetic resonance velocimeter with a high spatial resolution
Author
송시몬
Keywords
Custom-made RF coil; High spatial resolution; Magnetic resonance velocimetry; Wall shear stress
Issue Date
2019-04
Publisher
KOREAN SOC MECHANICAL ENGINEERS
Citation
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v. 33, NO 4, Page. 1681-1688
Abstract
Magnetic resonance velocimetry (MRV) is a versatile flow visualization technique that is used to measure three-component velocity vectors in a 3D space. However, the spatial resolution of MRV is relatively poor in comparison with optical flow visualization techniques, thereby limiting its applicability to small-scale flows and wall shear stress (WSS) estimation. Thus, we built a solenoid RF coil and evaluated its performance in terms of spatial resolution improvement by measuring the laminar flow in a circular tubing. The coil was developed for a 4.7 Tesla MRI system and for tightly wrapping a flow tubing with an inner diameter of 2 mm. The custom-made RF coil could precisely capture the velocity vectors in a voxel that was 11 times smaller than a commercial coil at the same SNR. Therefore, the WSS errors estimated using the custom-made and commercial coils were 8.5 % and 42.3 %, respectively.
URI
https://link.springer.com/article/10.1007%2Fs12206-019-0320-3https://repository.hanyang.ac.kr/handle/20.500.11754/110953
ISSN
1738-494X; 1976-3824
DOI
10.1007/s12206-019-0320-3
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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