Cardiac 31P MRS is a powerful noninvasive tool in the assessment of myocardial energy metabolism, but it is inherently limited by low SNR, which can be mitigated by increasing B0. In order to fully exploit the SNR gain, elaborate RF coil development is necessary. In this work we compare the performance of a standard single loop coil with an optimized 3-element array in simulation and measurement. We validated the superior performance of the array experimentally, with a 2.2-fold SNR increase in localized spectroscopy, and in simulation yielding a 1.7 and 2.2 times higher PE and SE for the array, respectively.
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