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. 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 peritoneum The diaphragm Arm muscles Leg muscles None 2. 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: 155 mg/dl. 200 mg/dl. 120 mg/dl. 175 mg/dl. None 3. All of the following scintigraphic methods are often used in the diagnosis of fever of unknown origin (FUO) EXCEPT: Ga-67 citrate scintigraphy Labeled leukocytes scintigraphy Labeled erythrocytes scintigraphy Fluorodeoxyglucose-positron emission tomography (FDG-PET) None 4. F-18 is a cyclotron-produced radioisotope with a half-life approximately of: 101 min. 110 min. 11 min. 119 min. None 5. 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? Perform the study regardless the system type or field strength Perform the exam using 0.5 Tesla systems or less Perform PET only. It is contraindicated to perform the exam as titanium alloy is ferromagnetic None 6. Which of the following radionuclides used in PET imaging produces the highest resolution images? Rb-82. C-11. N-13. F-18. None 7. All of the following cellular mechanisms are responsible for malignant cells increased F-18 fluorodeoxyglucose accumulation EXCEPT: Increased intracellular hexokinase. Low glucose-6-phosphatase. Low mitotic rate. Increased membrane transporters. None 8. A patient is required to extend the arms above the head during a PET/CT scan. Which of the following is the possible reason? Reduces possible artifact formation Minimizes the patient's movement during the Scan Maximizes extension of the spine Helps the patient to hold breath None 9. 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: Larger with a lower activity concentration Smaller with a lower activity concentration Larger with a higher activity concentration Smaller with a higher activity concentration None 10. 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 positive and thyroglobulin (Tg) is negative. I-131 whole body scan is negative and thyroglobulin (Tg) is positive. I-131 whole body scan is positive and thyroglobulin (Tg) is positive. I-131 whole body scan is negative and thyroglobulin (Tg) is negative. None 1 out of 10 Time's upTime is Up! By Nasser AlMutairi|2021-04-07T10:58:49+03:00April 7th, 2021| 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 Δ
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