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Abstract #2433

Effects of coil combination algorithms on Quantitative Susceptibility Mapping

Riccardo Metere1, Ahmad Seif Kanaan1,2, Berkin Bilgic3, Torsten Schlumm1, and Harald E. Möller1

1NMR Unit, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany, 2Department of Psychiatry, Social Psychiatry and Psychotherapy, Hannover Medical School, Hannover, Germany, 3A. A. Martinos Center for Biomedical Imaging and Department of Radiology, Harvard Medical School, Boston, MA, United States

Quantitative Susceptibility Mapping is an imaging technique for obtaining information of the magnetic susceptibility from phase images. If the phase information is obtained from a coil composed of multiple receive elements (coil array), the resulting images need to be combined. This step is non-trivial, and several algorithms, with different performances, have been proposed. Here we compare two different coil combination algorithms: the adaptive combine method and a recently proposed extension of ESPIRiT. For each, we compared both single subject and group-averaged QSM maps, where we observed that the results are sensitive to the method used for coil combination.

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