Object localisation method in MR examination

摘要

The method involves locating a positionable object in an examined object by using magnetic resonance to form a reference image from at least one layer of the examined object. The MR signals are produced by a device of at least one. HF reception coil, with a small sensitivity range mounted on the object, under the influence of the magnetic field gradients. The current position of the object is determined from a frequency/phase spectrum of the MR signals. A layer position, in which the reference image is updated, is determined because of the current position of the object, and the preceding steps are repeated continuously.