LRA 211 Final Exam Revision Questions and Answers

1. The amount of light emitted from the display monitor is Brightness 2. The cathode includes the Filaments and focusing cup 3. The earliest atomic theory based on as arrangement similar to the solar system is attributed to 4. The portion of the induction motor that is outside the tube enclosure is the Rutherford Stator 5. Filtration placed in the path of the x-ray beam absorbs low energy pho- tons 6. Proctective apparel is often made of lead because it Has a high atomic number 7. The negative end of the x-ray tube is the Cathode 8. Which of the following factors affect beam quantity All of these kVp Distance Filtration 9. Soultions, x-ray tube leaking radiation can be no more 100 mR per hour at a dis- than tance one meter 10. Material like bone is considered Radiopaque 11. The majority of the x-ray photons produced are Brems photons 12. Increase in the image size of an object compared with Size distortion its true or actual size is called 13. After a photoelectric interaction, the incident photon loses all of its energy and no longer exists 14. X-ray are produced Using fast moving elec- trons 15. Secondary x-ray photons are the result of Compton and photoelec- tric interactions 16. Most classical scatter photons are absorbed in the body 17. Compton scattering results in All of these a Compton electron A secondary electron A Compton scatter photon 18. The protective tube housing helps to All of these keep the tube cool prevent electrical shocks to the radiographer limit leakage radiation 19. Half value layer (HVL) is used to measure beam quality 20. The overall quality of the radiographic images is deter- All of these mined by Sharpness Visibility of anatomic struc- tures Accuracy of structural lines 21. In reference to patient radiation does coherent scatter Slightly increase dose interactions 22. Characteristic cascade The process of a series of outer shell electrons filling inner shell vacancies right after the other is called 23. The positive end of the x-ray tube is Anode 24. Transmission refers to x-rays leaving the patient that did not interact with atoms 25. The electron shell closest to the nucleus is lettered K 26. Reduction in the energy or amount of radiation in the primary beam is attenuation