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Abstract #4777

Local Signal Recovery in Clinical FLASH Imaging with Parallel Transmission

Rainer Schneider 1,2 , Christopher Gliemli 3 , Christian Geppert 3 , Jens Haueisen 2 , Fernando Boada 4 , and Josef Pfeuffer 1

1 MR Application Development, Siemens Healthcare, Erlangen, Bavaria, Germany, 2 Institute of Biomedical Engineering and Informatics, TU Ilmenau, Ilmenau, Thuringia, Germany, 3 Siemens Healthcare, MR Research & Development, New York, NY, United States, 4 NYU Langone Medical Center, New York, NY, United States

In clinical 3T imaging, gradient-echo-based sequences oftensuffer from signal loss induced by patient specific susceptibility artifacts. To tackle this problem, a recently proposed local signal recovery method using parallel transmission was transferred to a clinical setup. The approach was further extended by B1 inhomogeneity correction and evaluated with human in-vivo experiments using the common FLASH sequence. Signals could be recovered up to 50% in frontal orbital cortex, while maintaining the SNR level. Full signal recovery could be achieved, if lower SNR levels are tolerated.

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