Test Bank For Radiographic Imaging and Exposure 6th Edition by Fauber Questions with rational Answers

Test Bank For Radiographic Imaging and Exposure 6th Edition by Fauber Questions with rational Answers 12. Effective compensation for the anode heel effect would involve positioning: a. the thinnest portion of the part under the anode and the thickest portion of the part under the cathode b. the thinnest portion of the part under the anode and the thinnest portion of the part under the cathode c. the thickest portion of the part under the cathode and the thickest portion of the part under the anode d. the thinnest portion of the part under the cathode and the thickest portion of the part under the anode ANS: A The thinnest portion of a part should be placed under the anode, because the more intense x-rays are emitted toward the cathode end of the tube, where the thickest part should be placed. 13. What is an acceptable level of leakage from the tube housing? a. 100 mGya per hour, measured 6 feet away b. 10 mGya per hour, measured 1 foot away c. 10 Gy per hour, measured at a distance of 4 meters d. 1 mGya per hour, measured at a distance of 1 meter ANS: D The maximum amount of leakage radiation from an x-ray tube is 100 mR (1 mGya) per hour when measured at a distance of 1 meter. 14. Which of the following could be defined as the production of an x-ray photon by the electrostatic attraction between the incident electron and the nucleus of the tungsten atom? a. Photoelectric interaction b. Bremsstrahlung interaction c. Characteristic interaction d. Pair production interaction ANS: B Production of an x-ray photon as a result of a slowing down of the incoming electron due to the electrostatic force of the nucleus is due to a bremsstrahlung interaction.