In one embodiment, a magnetic resonance imaging apparatus includes an input device by which patient information including at least height and weight is inputted a display and processing circuitry configured to calculate a BMI (Body Mass Index) indicated by weight (kg)/{height (m)}2 based on the height and weight, determine whether the BMI is within a range of a predetermined threshold value or not and cause the display to display an alarm when the BMI is not within the range of a predetermined threshold value.