Patent ID: 7623901
Filing Date: 2009-11-24
Classification: A61B,G01R

Abstract:
1. A magnetic resonance imaging apparatus comprising: an input unit configured to input a signal representing cardiac temporal phases of said subject to be imaged; a pre-pulse applying unit configured to apply a pre-pulse to the subject; a scanning unit configured to perform a scan applying an imaging pulse to a desired region of the subject after application of the pre-pulse; and a control unit configured to control said pre-pulse applying unit to apply the pre-pulse using a specific waveform representing a temporal phase of a first cardiac cycle in a signal representing temporal phases of plural cardiac cycles as a first trigger and to control said scanning unit to apply the imaging pulse using a specific waveform representing a cardiac temporal phase of a second cardiac cycle as a second trigger so as to make a time interval from the specific waveform representing the cardiac temporal phase of the second cardiac cycle to application of the imaging pulse a fixed value by changing a time interval from the pre-pulse to the imaging pulse so as to be reduced when the first cardiac cycle is larger than the second cardiac cycle and be enlarged when the first cardiac cycle is shorter than the second cardiac cycle, the second cardiac cycle being later than the cardiac cycle by at least one cardiac cycle.