Patent ID: 8994373
Filing Date: 2015-03-31
Classification: G01R

Abstract:
1. A method for implementing an interleaved multislice magnetic resonance (MR) measurement of a moving examination subject, comprising: providing a computerized control unit of an MR data acquisition unit with an adjustment value for a shim current in a shim channel of the MR data acquisition unit, and an adjustment value for a radio-frequency (RF) center frequency of an RF system of the MR data acquisition unit for at least two different positions of a moving examination subject in a measurement volume of the MR data acquisition unit; continuously moving an examination subject through said MR data acquisition unit; while continuously moving the examination subject through the MR data acquisition unit, acquiring MR data from the subject in an interleaved multislice MR data acquisition procedure in which a basic magnetic field is generated in a measurement volume of the MR data acquisition unit and in which at least two successive excitations of nuclear spins in a slice of the examination subject are produced by radiation of respective RF pulses by the RF system, and acquiring MR data from said slice after said at least two successive excitations of the nuclear spins in said slice; and from said computerized control unit, controlling shimming said basic magnetic field to achieve a desired homogeneity of said basic magnetic field at least in said measurement volume by selecting and adjusting the shim current in said shim channel and selecting and adjusting an associated RF center frequency during said interleaved multislice MR measurement dependent on the provided adjustment value for the shim current and the provided adjustment value for the associated RF center frequency for said at least two different positions, in order to cause a defined slice of the examination subject always to be measured with a same shim current and RF center frequency during said interleaved multislice MR measurement.