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Music‐based magnetic resonance fingerprinting to improve patient comfort during MRI examinations
Author(s) -
Ma Dan,
Pierre Eric Y.,
Jiang Yun,
Schluchter Mark D.,
Setsompop Kawin,
Gulani Vikas,
Griswold Mark A.
Publication year - 2016
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.25818
Subject(s) - magnetic resonance imaging , imaging phantom , computer science , noise (video) , echo (communications protocol) , flip angle , fast spin echo , real time mri , spin echo , artificial intelligence , acoustics , nuclear magnetic resonance , pattern recognition (psychology) , physics , optics , radiology , medicine , image (mathematics) , computer network
Purpose Unpleasant acoustic noise is a drawback of almost every MRI scan. Instead of reducing acoustic noise to improve patient comfort, we propose a technique for mitigating the noise problem by producing musical sounds directly from the switching magnetic fields while simultaneously quantifying multiple important tissue properties. Theory and Methods MP3 music files were converted to arbitrary encoding gradients, which were then used with varying flip angles and repetition times in a two‐ and three‐dimensional magnetic resonance fingerprinting (MRF) examination. This new acquisition method, named MRF‐Music, was used to quantify T 1 , T 2 , and proton density maps simultaneously while providing pleasing sounds to the patients. Results MRF‐Music scans improved patient comfort significantly during MRI examinations. The T 1 and T 2 values measured from phantom are in good agreement with those from the standard spin echo measurements. T 1 and T 2 values from the brain scan are also close to previously reported values. Conclusions MRF‐Music sequence provides significant improvement in patient comfort compared with the MRF scan and other fast imaging techniques such as echo planar imaging and turbo spin echo scans. It is also a fast and accurate quantitative method that quantifies multiple relaxation parameters simultaneously. Magn Reson Med 75:2303–2314, 2016. © 2015 Wiley Periodicals, Inc.