Radiation Quantities and Units A multiple-choice quiz consists of: 10 QuestionsQuestions are selected randomly from a collection of 18 questions. More Questions You will get deferent questions every time you take the quiz. Correct AnswersThere could be more than one correct answer, select all that apply.Skip QuestionsYou are allowed to scroll backward and forward before submitting your answers.10 MinutesThe quiz has a time limit. Time's up You can still submit your answers after the allowed period of time has ended . When ready, click Next to start the quiz. Name (Required) Email (Optional) Twitter (Optional) 1. Which of the following is the unit of Absorbed Dose? Gray Roentgen Becquerel Curie None 2. The initial activity of an isotope is 180 mCi and its half-life is 6 hours. Which of the following number of the activity will be present after 2 days? 15 mCi 30 mCi 0.7 mCi 3.8 mCi None 3. A vial contains an unidentified radionuclide with an initial activity of 60 mCi at 6 p.m. Sunday. At 6 a.m. Monday, the activity decayed to 7.5 mCi. Which of the following is the physical half-life of this radionuclide in hours? 4 10 6 8 None 4. If a 15 mCi of F-18 fluorodeoxyglucose (FDG) dose is needed for positron emission tomography (PET) scan at 1:00p.m., how much activity should be prepared at 10a.m.? 4.8 mCi 11 mCi 46.6 mCi 21.2 mCi None 5. What is the effective half-life of an isotope, that has a physical half-life of 18 hours and a biological half-life of 10 hours? 9.2 hours 7.5 hours 2.5 hours 6.4 hours None 6. 1 microcuries (uCi) is equal to: 1000 millicurie (mCi) 1/100 millicurie (mCi) 1/1000 millicurie (mCi) 1000 curies (Ci) None 7. 850 milligrays (mGy) are equal to? 8,500,000 rads 85 rads 85,000 rads 0.850 rad None 8. How much activity will be remaining at 2:30 p.m. if the dose of Tc-99m methylene diphosphonate (MDP) is calibrated to contain 25 mCi at 12:00 p.m. on the same day? 19.5 mCi 18.7 mCi 17.3 mCi 15.7 mCi None 9. A bone scan is scheduled to be performed with 25 mCi of Tc-99m methylene diphosphonate (MDP) at 12:30p.m. How much Tc-99m MDP should be placed in the syringe at 8:00a.m. on the same day? 33 mCi 37.4 mCi 35 mCi 42 mCi None 10. At the time of preparation, a macroaggregated albumin (MAA) kit contained 30.5 mCi of Tc-99m. How much activity will remain after 5 hours and 30 minutes? 7.2 mCi 18.5 mCi 16.2 mCi 10.5 mCi None 1 out of 10 Time's upTime is Up! By Nasser AlMutairi|2021-03-25T12:42:27+03:00March 25th, 2021| Share This Post With Others! FacebookXLinkedInWhatsAppPinterestEmail About the Author: Nasser AlMutairi Senior Nuclear Medicine Specialist at Hafar Al-Batin Central Hospital, Founder of NuclearMed Website. Leave a ReplyCancel reply
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