MEDICAL DEVICES FOR RADIOLOGICAL USE, NAMELY, INTRAOPERATIVE RADIATION THERAPY EQUIPMENT IN THE NATURE OF A MAIN HOUSING FOR ATTACHMENT TO AN ACCELERATOR, ATTACHMENT SLEEVES, APPLICATORS, AND A FIBER OPTIC PERISCOPE, CABLE AND LIGHT SOURCE; AND MEDICAL DEVICES FOR RADIOLOGICAL USE, NAMELY, POSITIONING AND IMMOBILIZING DEVICES FOR RADIATION THERAPY AND X-RAY IMAGING, RADIATION THERAPY AND X-RAY IMAGING SHIELDING BLOCKS AND SHIELDING DEVICES, LABORATORY APRONS AND GLOVES FOR MEDICAL USE, MULTIPLE USE PATIENT MARKING DEVICES, MULTIPLE USE X-RAY IMAGING MARKING DEVICES, ANATOMICAL DRAWINGS, RADIATION THERAPY WARNING SIGNS, X-RAY CASSETTE AND FILM HOLDERS, X-RAY IMAGE ILLUMINATORS, AND CALIPERS, RULERS, PROTRACTORS, LEVELS AND STOPWATCHES ALL FOR CLINICAL MEDICAL RADIOLOGICAL USE