Quiz: Positron Emission Tomography 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. A 65-year-old patient is referred for a brain PET/MR study. The referring physician reports placement of a titanium alloy brain clips for an intracranial aneurysm 5 years ago. Which of the following would be the most appropriate action regarding imaging this case? It is contraindicated to perform the exam as titanium alloy is ferromagnetic Perform PET only. Perform the exam using 0.5 Tesla systems or less Perform the study regardless the system type or field strength None 2. F-18 is a cyclotron-produced radioisotope with a half-life approximately of: 11 min. 110 min. 101 min. 119 min. None 3. The majority of radiation exposure to personnel performing PET/CT procedures comes from the: CT scanner PET scanner Injected patient Unopened dose pig None 4. The time from F-18 fluorodeoxyglucose (FDG) administration to the time of data acquisition has been shown to have a marked effect on FDG uptake. An increased interval between the injection and imaging uptake time will DECREASE radiotracer concentration in: Blood pool. Bone marrow. Muscle. Tumor. None 5. High glucose levels may interfere with tumor targeting due to competitive inhibition of FDG uptake by d-glucose. FDG-PET study should not be recommended when the glucose level in the blood exceeds: 120 mg/dl. 200 mg/dl. 155 mg/dl. 175 mg/dl. None 6. Before FDG administration, the patient relaxes in a waiting room to minimize muscular activity, and in so doing minimizes any physiological uptake of FDG in the muscles. Hyperventilation may cause increased uptake in the: The diaphragm Arm muscles The peritoneum Leg muscles None 7. 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: Decrease heart rate. Induce hyperglycemia. Shunt glucose to skeletal and cardiac muscles. Increase blood pressure. None 8. Localizing metastatic disease in thyroid cancer patients with F-18 fluorodeoxyglucose (FDG) PET imaging is the primary clinical indication if: I-131 whole body scan is negative and thyroglobulin (Tg) is positive. I-131 whole body scan is negative and thyroglobulin (Tg) is negative. I-131 whole body scan is positive and thyroglobulin (Tg) is negative. I-131 whole body scan is positive and thyroglobulin (Tg) is positive. None 9. 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 None 10. With the administration of oral contrast media for integrated Positron Emission Tomography/Computed Tomography (PET/CT) studies, CT-derived attenuation values are: Overestimated Not applicable Not performed Underestimated None 1 out of 10 Time's upTime is Up! By Nasser AlMutairi|2021-09-20T13:16:27+03:00April 15th, 2021|Positron Emission Tomography| شارك هذه الصفحة FacebookXLinkedInWhatsAppPinterestEmail About the Author: Nasser AlMutairi Senior Nuclear Medicine Specialist at Hafar Al-Batin Central Hospital, Founder of NuclearMed Website. Leave A Comment Cancel replyComment Notify me of follow-up comments by email. Notify me of new posts by email. Δ
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