| 摘要 |
<P>PROBLEM TO BE SOLVED: To automatically establish a gate window of breathing movement synchronous photographing. <P>SOLUTION: The magnetic resonance imaging apparatus includes: a static magnetic field-generating unit which generates a uniform static magnetic field in a space in which a subject is held; a gradient magnetic field-generating unit which generates a gradient magnetic field superimposing on the static magnetic field; a high-frequency coil which generates a high-frequency magnetic field irradiated to the subject; a unit to detect an NMR signal generated from the subject; and a unit which images the signal which has been detected. The magnetic resonance imaging apparatus detects an NMR signal for the imaging when a first section of the subject which moves periodically is within the limit of a desired displacement. The magnetic resonance imaging apparatus further includes: a displacement measurement unit to set an interval and to meter a displacement of a first section of the subject which moves periodically; and a unit to specify that a moving direction of a section of the subject which moves periodically has changed based on measurement of the displacement, and makes a range containing a displacement when the moving direction has changed as a range of the desired displacement. <P>COPYRIGHT: (C)2012,JPO&INPIT |
