An X-ray CT system is provided that determines input imaging conditions based on the attributes of subjects that were measured by the apparatus itself and can prevent excessive radiation exposure due to human error. The X-ray CT system comprises a measurement unit, a part identification unit, a calculation unit, a comparison unit, and a notification unit. The measurement unit measures the attributes of a subject placed on a couch. The part identification unit identifies the part of the subject being imaged based on the measured attributes of the subject. The calculation unit calculates a radiation dose based on the identified unit being imaged. The comparison unit makes a determination by comparing the calculated radiation dose and the radiation dose based on the imaging conditions input for examination. The notification unit notifies the results determined by the comparison unit.
