| 摘要 |
PROBLEM TO BE SOLVED: To obtain excellent images regardless of the shift of a center frequency of magnetic resonance of hydrogen atoms attributable to heat generation of a gradient magnetic field coil.SOLUTION: A magnetic resonance imaging apparatus 20 includes: a gradient magnetic field coil unit 26 which generates a gradient magnetic field in an imaging space; a temperature measurement part which measures a temperature of the gradient magnetic field coil unit 26 at least twice at different timings; a pulse setting part which corrects the center frequency of an RF (Radio Frequency)pulse in accordance with the variation of the temperature of the gradient magnetic field coil unit 26; and an imaging part which sends the RF pulse corrected by the pulse setting part, receives magnetic resonance signals from a subject P in the imaging space and generates image data on the subject P on the basis of the magnetic resonance signals. The imaging part is configured to perform dynamic imaging. The temperature measurement part is configured to detect the temperature of the gradient magnetic field coil unit 26 during each time phase in the dynamic imaging.SELECTED DRAWING: Figure 1 |
