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. 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? 8 6 10 4 None 2. Which of the following is the unit of Absorbed Dose? Becquerel Roentgen Gray Curie None 3. If 300 uCi of I-123 is used for an adult dose, what is the pediatric dose according to Young’s formula for a child who is 14 years old and weighs 30 kg? 250 uCi 173 uCi 185 uCi 162 uCi None 4. 3.4 curies (Ci) is equal to: 0.0034 microcurie (uCi) 3,400,000 microcuries (uCi) 0.0000034 microcurie (uCi) 3,400 microcuries (uCi) 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? 7.5 hours 2.5 hours 9.2 hours 6.4 hours None 6. 1 microcuries (uCi) is equal to: 1/100 millicurie (mCi) 1/1000 millicurie (mCi) 1000 millicurie (mCi) 1000 curies (Ci) None 7. Xe-133, used during a ventilation/perfusion (VQ) scan has a physical half-life of 5.3 days and biological half-life is 0.37 min. What is the effective half-life of Xe-133? 0.37 min 5 s 5.3 min 3.7 min None 8. Dose equivalency is being measured in units called: Curies Rems Rads Becquerels None 9. A nuclear medicine department receives 375 mCi of Tc-99m in 4.5 ml bulk vial. If the macroaggregated albumin (MAA) kit is to be reconstituted with 30 mCi in 3 ml, how much saline should be added to the kit? 1.64 ml 3.0 ml 3.6 ml 2.64 ml None 10. Which of the following is its effective half-life if an isotope has a physical half-life of 18 hours and biological half-life of 10 hours? 6.4 hours 0.5 hours 1.8 hours 0.2 hours 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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