NUCMED EVAL EXAM QUESTIONS AND ANSWERS

NUCMED EVAL EXAM QUESTIONS AND ANSWERS C. anatomy 1. Nuclear medicine images best portray the following aspects of the organ being studied except: * 1/1 A. physiology B. biodistribution C. anatomy D. pathology D. Radiopharmaceuticals affect the biodistribution and metabolism of a certain organ 2. The following are true about radiopharmaceuticals, except: * 0/1 A. Radiopharmaceuticals are combinations of radionuclide and pharmaceutical B. Radiopharmaceuticals mimic the physiology of a certain organ. C. Radiopharmaceuticals are also called tracers. D. Radiopharmaceuticals affect the biodistribution and metabolism of a certain organ Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen Brainpower Read More C. 1.00 3. 37 MBq is equal to how many mCi? * 0/1 A. 0.001 B. 0.01 C. 1.00 D. 10.00 C. Neutron 4. Which of the following subatomic particles is the heaviest? * 1/1 A. Proton B. Electron C. Neutron D. Positron A. beta minus 5. Radionuclide produced in a nuclear reactor will most likely to decay by: * 1/1 A. beta minus B. beta plus C. alpha D. electron capture A. 1 and 2 only 6. The following are by products of beta minus decay, except: 1. electron 2. neutrino 3. anti-neutrino * 0/1 A. 1 and 2 only B. 1 and 3 only C. 2 and 3 only D. 1, 2 and 3 C. Decrease by 1 7. What happens to the atomic number of a certain element after undergoing positron emission? * 1/1 A. Increase by 2 B. Increase by 1 C. Decrease by 1 D. No change. B. Low 8. Positive beta decay will most likely occur if the neutron to proton ratio is: * 0/1 A. High B. Low C. Same D. Undetermined D. Technetium-99m 9. The most common radionuclide used in nuclear medicine imaging is _______. * 0/1 A. Fluorine-18 B. Technetium-99 C. Thallium-99m D. Technetium-99m B. characteristic radiation 10. What type of electromagnetic energy is released after electron capture occurs? * 0/1 A. bremsstrahlung radiation B. characteristic radiation C. gamma rays D. ultraviolet rays C. Remain unchanged 11. The atomic mass of a certain element after negatron emission will __________. * 0/1 A. Increase by 1 B. Decrease by 1 C. Remain unchanged D. Increase by a factor of 10 C. Biological half-life 12. It is defined as the time required for the body to eliminate half of the administered dosage of any substance. * 0/1 A. Half-life B. Physical half-life C. Biological half-life D. Effective half-life D. (1/2)10 13. After ten half lives, the fraction of activity remaining is: * 0/1 A. 1/10 B. (1/10)2 C. (1/10)10 D. (1/2)10 C. cyclotron 14. Circular devices in which charged particles such as protons and alpha particles are accelerated in a spiral path in a vacuum * 1/1 A. nuclear reactor B. generator C. cyclotron D. linear accelerator B. Mo-99 15. The parent nuclide of Tc-99m * 1/1 A. Mb-99 B. Mo-99 C. Ru-99 D. Rt-99 B. moderator 16. After fast neutrons are produced in a nuclear reactor, what device is used to slow down these fast neutrons into thermal neutrons. * 0/1 A. deflector B. moderator C. dees D. fuel rods D. 1, 2, and 3 17. The ideal radionuclide in nuclear medicine imaging should be: 1. pure gamma emitter 2. minutes to hours half-life 3. 100 - 200 keV * 0/1 A. 1 only B. 1 and 2 only C. 1 and 3 only D. 1, 2, and 3 C. All undergo isobaric transition 18. The similarities between beta plus, beta minus and electron capture. * 1/1 A. All undergo isomeric transition B. All undergo isotonic transition C. All undergo isobaric transition D. All undergo internal conversion C. Converging 19. Which of the following collimators will produce a magnified image only? * 1/1 A. Parallel hole B. Pin-hole C. Converging D. Diverging B. 1 and 4 20. Placing the converging collimator as close as possible to the source will: 1. magnify the image 2. minify the image 3. increase the FOV 4. decrease the FOV * 0/1 A. 1 and 3 B. 1 and 4 C. 2 and 3 D. 2 and 4 D. Scintillation camera 21. Which type of radiation detector depends the measurement of radioactivity through excitation? * 0/1 A. Basic Ionization chamber B. Proportional counters C. Geiger-Mueller counter D. Scintillation camera A. Georg de Hevesy 22. He was credited for the invention and development of Gamma Camera in 1958. * 0/1 A. Georg de Hevesy B. Hal Anger C. Benedict Cassen D. Enrico Fermi A. Collimator 23. Located at the face of the detector that functions to separate the parallel gamma rays and keep scattered rays from reaching the crystal. * 0/1 A. Collimator B. Pulse Height Analyzer C. Variable aperture collimator D. Both A and C C. 90 mCi 24. A source of iodine-131 (t1/2 = 8 days) is delivered to the nuclear medicine department calibrated for 100 mCi at 8AM on Monday. If this radioactivity is injected to the patient at noon on the following Tuesday, what radioactivity will the patient receive? * 1/1 A. 80 mCi B. 85 mCi C. 90 mCi D. 95 mCi C. 90 mCi 24. A source of iodine-131 (t1/2 = 8 days) is delivered to the nuclear medicine department calibrated for 100 mCi at 8AM on Monday. If this radioactivity is injected to the patient at noon on the following Tuesday, what radioactivity will the patient receive? * 1/1 A. 80 mCi B. 85 mCi C. 90 mCi D. 95 mCi C. 12 mCi 25. A source of F-18 (t1/2 = 110 minutes) is noted to contain 3 mCi at noon. What was the radioactivity at 8AM the same day? * 1/1 A. 24 mCi B. 18 mCi C. 12 mCi D. 6 mCi B. Septum 26. In a typical collimator assembly, the holes of the lead collimator is separated from one another by this structure. * 1/1 A. Dees B. Septum C. Divider D. Hole separator C. Photoelectric effect 27. What type of x-ray interaction with matter will allow photopeak to occur during gamma ray detection in the crystal? * 0/1 A. Classical Scattering B. Compton effect C. Photoelectric effect D. Pair production D. Auger effect 28. This phenomenon happens when an inner shell electron is ionized resulting to the production of characteristic x-rays, happened to ionize adjacent electron in the orbital shell resulting to ionization of that electron. * 0/1 A. Photoelectric effect B. Compton effect C. Space charge effect D. Auger effect