Patent ID: 9726744
Date: 2017-08-08
CPC Classifications: A61B,G01R

Claim:
1. A magnetic resonance imaging apparatus comprising: a static magnetic field formation part for forming a static magnetic field, a gradient magnetic field application part for applying a gradient magnetic field, a radio frequency magnetic field transmission part having a plurality of channels for transmitting different radio frequency magnetic fields to a subject, a signal reception part for receiving magnetic resonance signals generated from the subject, a distribution calculation part for calculating a first radio frequency magnetic field distribution as a radio frequency magnetic field distribution of a first distribution measurement section perpendicular to a first axis from the magnetic resonance signals received by the signal reception part after the radio frequency magnetic fields are transmitted from the radio frequency magnetic field transmission part to the subject, and a condition calculation part for calculating, as a radio frequency magnetic field condition, at least one of phase and amplitude of a radio frequency magnetic field irradiated from each of the plurality of the channels among imaging conditions for an arbitrary imaging section as an object of imaging on the basis of the first radio frequency magnetic field distribution, wherein: the imaging section is a section perpendicular to a second axis different from the first axis, the condition calculation part comprises: a distribution extraction part for extracting a crossing region radio frequency magnetic field distribution as a radio frequency magnetic field distribution of a region containing a line of intersection of the imaging section and the first distribution measurement section from the first radio frequency magnetic field distribution, and the condition calculation part calculates the radio frequency magnetic field condition of the imaging section by using the crossing region radio frequency magnetic field distribution.