MECHANISMS FOR MEASURING PULMONARY FUNCTIONS, BLOOD VOLUME, AND BLOOD FLOW; MEDICAL DIAGNOSTIC MECHANISMS FOR GENERATING, EMITING, DETECTING, ANALYZING, HANDLING, RESTRICTING, SHAPING, MEASURING, AND/OR RECORDING ENERGY IN THE FORM OF X-, NUCLEAR AND OTHER ELECTROMAGNETIC RADIATION, AND ULTRASOUND; MECHANISMS FOR CALCULATING ENERGY LEVELS FOR MEDICAL DIAGNOSTIC X-RAY EXPOSURES; MEDICAL DIAGNOSTIC MECHANISMS STIMULATED BY SUCH ENERGY FOR PRODUCING ELECTRICAL OR AUDIBLE SIGNALS OR VISUALLY-DETECTABLE IMAGES; MECHANISMS FOR HOLDING AND/OR AIDING IN VIEWING, IDENTIFYING AND INTERPRETING MEDICAL DIAGNOSTIC IMAGES AND FILMS; STRUCTURAL PARTS FOR SUCH MECHANISMS; MEDICAL DIAGNOSTIC INSTRUMENTS FOR USE WITH TREAMENT CONES; MOBILE BUCKY STANDS; HEAD CLAMPS; CALIPERS; CONE RACKS; ENEMA BAGS, CANS AND CAN HOLDERS; ENEMA RINGS, CONTAINERS AND KITS; URINAL SADDLES; CATHETERS; POSITIONERS FOR HOLDING AND/OR SUPPORTING, HANDLING, AND LOCATING PARTS OF THE HUMAN BODY FOR EXAMINATION PURPOSES; CUPS FOR ORAL ADMINISTRATION OF MEDICANTS; UROLOGICAL SURGICAL APPARATUS; MECHANICAL MEASURING DEVICES FOR MEASURING THE PELVIC CAVITY AND OTHER PARTS OF THE HUMAN BODY; OPTIC CANAL LOCALIZERS; STENVERS LOCALIZERS; HEAD RESTS; ANGIO INJECTORS; STRETCHERS; ELECTROCARDIOGRAGH EQUIPMENT; MAGNETIC RESONANCE IMAGING MECHANISMS; PROTECTIVE CLOTHING RESISTANT TO X-, NUCLEAR AND OTHER IONIZING RADIATION AND RACKS THEREFOR, PATIENT GOWNS AND SLIPPERS