MAGNETIC RESONANCE IMAGING APPARATUS AND CONTROL METHOD THEREFOR

摘要

The magnetic resonance imaging apparatus includes: a calculation means for calculating the amount of absorption of electromagnetic waves into the object according to the emission of RF pulses in a part of the object or a bed position where imaging is scheduled; a means for setting imaging conditions, in which the calculated amount of absorption satisfies conditions of the specified value of the amount of absorption of electromagnetic waves, from the relationship between the calculated amount of absorption and the specified value of the amount of absorption of electromagnetic waves; and a bed control device that controls a top plate according to the set imaging conditions.

主权项

1. A magnetic resonance imaging apparatus, comprising:
a bed including a top plate that moves an object placed thereon; a magnetic field generation means which generates a magnetic field in a space in which the object is located; an irradiation coil for irradiating the object with RF pulses; a means which detects an NMR signal generated by the object and images the detected NMR signal; an input and output device for inputting or displaying imaging conditions; and a control device that calculates an amount of absorption of electromagnetic waves caused by the irradiation of the RF pulses to the object based on the input imaging conditions, determines whether or not the calculated amount of absorption satisfies conditions of a specified value (SAR upper limit) of the amount of absorption of electromagnetic waves, and performs movement control of the top plate and irradiation control of the RF pulses in accordance with imaging conditions determined to satisfy the conditions of the specified value (SAR upper limit) of the amount of absorption of electromagnetic waves.