1. The protective housing of an x-ray tube designed to: a. Control isotropic x-ray emission b. Control scatter radiation c. Limit operation to 100KVp or less d. Reduce the hazard of leakage radiation 2. The density difference between two selected portions of a radiograph is known as: a. Sharpness b. Radiographic Contrast c. Specific Activity d. Subject Density 3. Which of the following materials is commonly used in Optical Simulated Luminescence Dosimeters (OSLD)? a. Lithium Fluoride b. Aluminum oxide c. Calcium Sulfate d. Dysprosium dioxide 4. The X ray Tube should have sufficient shielding to limit the leakage radiation to _________ mR/hr at 1m from the focal spot. a. 1 b. 10 c. 100 d. 1000 5. Which artifact appears as evenly spaced scratches on a radiograph? a. Pi lines b. Crescent marks c. Static artifacts d. Guide shoe marks 6. Which of the following X-ray interactions result in useful image formation in diagnostic radiography? a. Pair Production b. Photoelectric absorption c. Compton scattering d. Cohorent scattering 7. Radiographic projection done to demonstrate middle lobe collapse is a. Apical view b. Lordotic view c. Posterior oblique d. Anterior oblique 8. One of the following chemical is used in both developing and fixer a. Reducing agent b. Restrainer c. Preservative d. Activator 9. The principle disadvantage of tomography is a. Time consuming technique b. Increased patient dose c. Machinery is costly d. All 10. The wet side of the dark room a. Processing tank b. Loading bench c. Replenishing solution d. Unused films 11. Roentgen discovered X-rays accidentally during the study of a. Phosphorescence effect b. Photoelectric effect c. Fluorescence effect d. All 12. The study using barium for small intestine is known as a. Barium meal follow through b. Barium swallow c. Barium enema d. None of the above 13. Radium was discovered by a. Marie b. Marie and Pierre Curie c. Pierre Curie d. Rutherford 14. Diaphragm is supplied by a. Phrenic artery b. External carotid artery c. Subclavian artery d. Descending artery 15. What makes up majority of the X-ray beam? a. Electrons b. Scattered radiation c. Characteristic radiation d. Bremsstrahlung radiation Submit All