To allow scanning of the whole body while reducing a conveying path and the frequency of transfer required for monitoring and treating a patient.

This system has a fixedly arranged pedestal 7 and a table deck 9 mounted on the pedestal. The table deck has a patient laying apparatus 5 wherein a first region 11 transmitting X-rays on the head side, and a second region 13 transmitting X-rays on the foot side are respectively projected from the pedestal 7; a computed tomographic apparatus 23 having an opening 25 for the patient and drivable along a guide rail 27 of a floor 6 so that the second region 13 of the table deck 9 is inserted in the opening 25 for the patient; an X-ray apparatus 33 provided inside the first region 11 of the table deck 9 for radiography; and a patient laying table guided sliding in a longitudinal direction 20 on the table deck 9.