PET A multiple-choice quiz consists of: 10 QuestionsQuestions are selected randomly from a collection of 17 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. F-18 is a cyclotron-produced radioisotope with a half-life approximately of: 11 min. 101 min. 110 min. 119 min. 2. The majority of radiation exposure to personnel performing PET/CT procedures comes from the: Injected patient CT scanner PET scanner Unopened dose pig 3. The elevated serum glucose level at the time of fluorodeoxyglucose (FDG) administration may decrease the sensitivity of the FDG-PET study. Althoguh intravenous bolus of insulin may effectively lower the serum glucose level, however induced hyperinsulinemia will: Shunt glucose to skeletal and cardiac muscles. Increase blood pressure. Decrease heart rate. Induce hyperglycemia. 4. The usefulness of F-18 FDG PET in infection imaging is based on the fact that granulocytes and macrophages in infectious foci: Have high glucose consumption Have short life span Have high mitotic rate Have high insulin production 5. The term “partial volume effect” is caused by the limited resolution of PET scanners and refers to phenomenon that make intensity values in images differ from what they ideally should be. The “hot” spot smaller than twice the resolution of the scanner will have total counts preserved and will appear: Smaller with a higher activity concentration Larger with a higher activity concentration Larger with a lower activity concentration Smaller with a lower activity concentration 6. Which of the following radionuclides used in PET imaging produces the highest resolution images? C-11. N-13. Rb-82. F-18. 7. With the administration of oral contrast media for integrated Positron Emission Tomography/Computed Tomography (PET/CT) studies, CT-derived attenuation values are: Not applicable Not performed Overestimated Underestimated 8. F-18 FDG uptake in tumors correlates with tumor: Growth and viability. Size and contractility. Shape and reproducibility. Volume and stability. 9. All of the following cellular mechanisms are responsible for malignant cells increased F-18 fluorodeoxyglucose accumulation EXCEPT: Low glucose-6-phosphatase. Increased intracellular hexokinase. Low mitotic rate. Increased membrane transporters. 10. A patient is required to extend the arms above the head during a PET/CT scan. Which of the following is the possible reason? Maximizes extension of the spine Helps the patient to hold breath Reduces possible artifact formation Minimizes the patient's movement during the Scan 1 out of 10 Time's upTime is Up! By Nasser AlMutairi|2021-04-07T10:58:49+03:00April 7th, 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
Leave a Reply