Patent ID: 7259560

Claim:
A magnetic resonance imaging apparatus, comprising: a gradient magnetic field generation unit configured to generate a gradient magnetic field in a predetermined space; a storage unit configured to store first information about a relationship between amounts of changes of the gradient magnetic field and rates of changes of the gradient magnetic field, and second information about a relationship between the rates of changes of the gradient magnetic field and permitted time periods; a control data generation unit configured to generate control data to control the gradient magnetic field; a first calculation unit configured to calculate rate of change of the gradient magnetic field with regard to an isocenter based on the first information and amount of change of the gradient magnetic field to be applied in accordance with the control data; a second calculation unit configured to calculate a permitted time period of rate of change based on the second information and the calculated rate of the change of the gradient magnetic field and; a third calculation unit configured to calculate a duration time period of the rate of the change of the gradient magnetic field based on the control data; and a determination unit configured to determine whether the calculated duration time period is within the permitted time period.