Patent ID: 7330575
Filing Date: 2008-02-12
Classification: G01R

Abstract:
1. A magnetic resonance imaging method for forming an image of an object from a plurality of signals acquired by an array of receiver antennae, a sensitivity map of each of the receiver antennae being provided, and a number of applied encoding steps being reduced with respect to the full set thereof, wherein the homogeneity of the main magnetic field is specified in a first region of full homogeneity, a second region of moderate homogeneity and a third region of full inhomogeneity, and that the sensitivity data of the array of receiver antennae is measured by a coarse calibration scan, wherein the full measured sensitivity data is used in the first region, for positions in the second region an estimate of the coil sensitivities is derived by a weighted addition of the measured sensitivities in the neighborhood of the position at issue, and in the third region the sensitivity data is set to zero.