MAGNETIC RESONANCE IMAGING DEVICE, STATIC MAGNETIC FIELD HOMOGENEITY ADJUSTMENT METHOD, PROGRAM, AND COMPUTER

摘要

The purpose of the present invention is to provide a static magnetic field homogeneity adjustment method that allows for a reduction in the amount of magnetic pieces that are placed for adjustment of the homogeneity of a magnetic field and accurately provides magnetic field homogeneity at the desired level. The present invention provides a method for adjusting the homogeneity of a static magnetic field generated in a field of view by a magnetic field generation device by calculating locations for a plurality of magnetic pieces away from the field of view by shimming calculations and placing the magnetic pieces at the locations determined by the shimming calculations. The method is characterized by comprising an adjustment step of adjusting the homogeneity of the static magnetic field, while imposing limitations on the shimming calculations such that the polarity of a magnetic field distribution generated in the field of view by the magnetic bodies placed in the locations is either positive or negative.