Patent Document ID: 20130249553
Application ID: 13990050
Patent Status: 0

Claim One:
1. A method of magnetic resonance (MR) imaging of at least a portion of a body of a patient positioned in an examination volume of a MR device the method comprising the acts of: subjecting the portion of the body to a calibration sequence comprising RF pulses and switched magnetic field gradients controlled in such a manner that a calibration signal data set is acquired by a multi-point Dixon technique at a first image resolution; deriving calibration parameters including shim settings from the calibration signal data set; controlling the MR device according to the derived calibration parameters including controlling currents through shimming coils of the MR device according to the derived shim settings; reconstructing at least one water image and at least one fat image as a segmented image from the calibration signal data set; identifying a water region and a fat region based on the at least one water image and the at least one fat image of the segmented image; determining shim settings that maximize the B 0 homogeneity in at least one of the water region and in the fat region of the segmented image; controlling the currents through the shimming coils of the MR device according to the determined shim settings during application of an imaging sequence; subjecting the portion of the body to the imaging sequence during application of the currents according to the determined shim settings, wherein the imaging sequence comprises RF pulses and switched magnetic field gradients controlled in such a manner that a diagnostic signal data set is acquired at a second image resolution which is higher than the first image resolution; and determining shim settings that maximize the B.