Dose-saving patient positioning device administered fürRöntgenstrahlung imaging modalities

The invention relates to a medical apparatus for irradiating a patient with ionizing radiation, wherein the medical device comprises a patient support apparatus, said patient support apparatus comprising a first holding device, a second retaining device and held between the first and the second holding device flexible sheet for receiving the patient, wherein the patient positioning device comprises means for moving the flexible sheet through a primary beam path of ionizing radiation therethrough.