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Abstract #3950

Evaluating Universal and Fast Online Customized Pulses for parallel transmission using two different RF coils

Jürgen Herrler1, Sydney Nicole Williams2, Patrick Liebig3, Shajan Gunamony4,5, Christian Meixner6, Andreas Maier7, Arnd Dörfler1, David Porter2, and Armin Michael Nagel6
1Institue of Neuroradiology, University Hospital Erlangen, Erlangen, Germany, 2Imaging Centre of Excellence, University of Glasgow, Glasgow, Scotland, 3SIEMENS Healthineers, Erlangen, Germany, 4Institute of Neuroscience & Psychology, University of Glasgow, Glasgow, Scotland, 5MR CoilTech Limited, Glasgow, Scotland, 6Institue of Radiology, University Hospital Erlangen, Erlangen, Germany, 7Friedrich Alexander University Erlangen Nürnberg, Erlangen, Germany

To investigate the universality of using pre-optimized parallel-transmit (pTx) pulses with different RF coils for routine imaging, Universal Pulses and Fast Online Customized Pulses were generated using eight respective datasets from both a commercial and a self-built 8Tx/32Rx coil. The pTx pulse types were designed for both excitation and inversion pulses in a 3D MPRAGE sequence. For each coil, one subject was examined with all combinations of pTx pulses. All pTx pulses outperform CP pulses on the coil they were trained on. When using a different coil, Universal Pulses may fail, especially for inversion, whereas FOCUS pulses achieve robust homogeneity.

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