| 摘要 |
A method of imaging a subject in an imaging system having a magnetic field and a plurality of receive coils movable with respect to the magnetic field includes sensing the magnetic field by means of at least one sensor having a known position with respect to the subject. At least one of the plurality of receive coils is selected in accordance with the sensing, and is enabled to form an image of the subject. The sensor may include a plurality of sensor coils disposed at differing locations within the magnetic field to sense the differing field amplitudes and/or phases thereof. The differing field intensities cause differing voltage amplitudes and/or phases to be induced on the sensor coils. The differing voltage amplitudes and/or phases are compared to determine the relative positions of the magnetic isocenter of the system and the receive coils to be enabled. Thus, a method for magnetic resonance imaging of a subject in an imaging system having a static magnetic field [B0], a selectively applied gradient magnetic field [B1], a selectively applied transmit excitation radio frequency magnetic field [RF B1], and a plurality of simultaneous data acquisition channels is taught wherein the location of a phased array or other multiple element receive coil and the subject patient with respect to the imaging center of the host magnetic resonance imaging system is determined by sensing the characteristics of one of the magnetic fields.
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