DEVICE FOR EXPOSURE FIELD MONITORING IN A RADIATION THERAPY APPARATUS

摘要

In a device for exposure field monitoring of a therapeutic radiation exposure field with diagnostic x-ray image quality with the same or nearly the same projection as in therapeutic radiation, the focal spot from which the diagnostic radiation emanates is designed to cause the diagnostic radiation to penetrate the patient in the same or nearly the same projection as the therapeutic radiation located at the target of the radiation therapy apparatus or in close proximity thereto.