To prevent the leakage of patient information in the film printing of image data and the misidentification of patients in film reading.

On the basis of the input of an inspection order in an input part 8, an identification information generation part 2 generates the patient identification information of the patient and preserves it in an identification information DB part 4. Then, the patient identification information is added to the image data generated by an image data generation part 1 on the basis of the patient information of the patient and the inspection order and they are preserved in a medical information DB part 3. A printing data generation part 5 generates data for printing by combining the patient identification information and the image data read from the medical information DB part 3 instead of the patient information which can not be disclosed. In the meantime, in film reading, on the basis of the collated result of the patient identification information printed on a film together with the image data and the patient identification information preserved in the identification information DB part 4, the patient information of the medical information DB part 3 is read out and the image data and the patient are collated.