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Coil combination methods for multi-channel hyperpolarized 13C imaging data from human studies.


ABSTRACT: Effective coil combination methods for human hyperpolarized 13C spectroscopy multi-channel data had been relatively unexplored. This study implemented and tested several coil combination methods, including (1) the sum-of-squares (SOS), (2) singular value decomposition (SVD), (3) Roemer method by using reference peak area as a sensitivity map (RefPeak), and (4) Roemer method by using ESPIRiT-derived sensitivity map (ESPIRiT). These methods were evaluated by numerical simulation, thermal phantom experiments, and human cancer patient studies. Overall, the SVD, RefPeak, and ESPIRiT methods demonstrated better accuracy and robustness than the SOS method. Extracting complex pyruvate signal provides an easy and excellent approximation of the coil sensitivity map while maintaining valuable phase information of the coil-combined data.

SUBMITTER: Zhu Z 

PROVIDER: S-EPMC7170546 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature

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Coil combination methods for multi-channel hyperpolarized <sup>13</sup>C imaging data from human studies.

Zhu Zihan Z   Zhu Xucheng X   Ohliger Michael A MA   Tang Shuyu S   Cao Peng P   Carvajal Lucas L   Autry Adam W AW   Li Yan Y   Kurhanewicz John J   Chang Susan S   Aggarwal Rahul R   Munster Pamela P   Xu Duan D   Larson Peder E Z PEZ   Vigneron Daniel B DB   Gordon Jeremy W JW  

Journal of magnetic resonance (San Diego, Calif. : 1997) 20190201


Effective coil combination methods for human hyperpolarized <sup>13</sup>C spectroscopy multi-channel data had been relatively unexplored. This study implemented and tested several coil combination methods, including (1) the sum-of-squares (SOS), (2) singular value decomposition (SVD), (3) Roemer method by using reference peak area as a sensitivity map (RefPeak), and (4) Roemer method by using ESPIRiT-derived sensitivity map (ESPIRiT). These methods were evaluated by numerical simulation, therma  ...[more]

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