X-RAY CT DEVICE

摘要

An X-ray CT device is provided for making it possible to properly calculate a radiation dosed amount more approximating to an actually exposed radiation dosage that includes scattering rays of an examined subject from data measured at the scanning time. A function or table showing a relationship between data obtained on the basis of the measured data of the subject detected by an X-ray detector at the scanning time and the radiation dosed amount is stored in advance; and the X-ray CT device calculates the radiation dosed amount of the subject in accordance with the data obtained on the basis of the measured data of the subject and the function or table showing the relationship between the data obtained on the basis of the measured data of the subject stored in advance and the radiation dosed amount. Here, the relationship between the data obtained on the basis of the measured data of the subject and the radiation dosed amount is a relationship between projected data of the subject made out by correcting the measured data of the subject and the radiation dosed amount, a relationship between a difference between the measured data of the subject and those without the subject and the radiation dosed amount, and the like.