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Abstract #3169

Distortion Scout in Metal Implants Imaging

Guobin Li1, Mathias Nittka2, Dominik Paul2, Wei Jun Zhang1

1Siemens Mindit Magnetic Resonance Ltd., Shenzhen, Guang Dong, China, People's Republic of; 2Siemens Healthcare Sector, Erlangen

In SEMAC and SEMAC-MAVRIC hybrid sequences, additional z-phase encoding steps are used to correct the through-plane distortion. But the preknowledge of the distortion degree is needed to determine the extension factor of the z-phase encoding. In this work, a method to scout the through-plane distortion by applying the readout gradient in slice direction is presented, which can be fully integrated into SEMAC and SEMAC-MAVRIC hybrid sequence.