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. 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 2. 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 3. With the administration of oral contrast media for integrated Positron Emission Tomography/Computed Tomography (PET/CT) studies, CT-derived attenuation values are: Overestimated Not performed Underestimated Not applicable None 4. Which of the following radionuclides used in PET imaging produces the highest resolution images? C-11. F-18. N-13. Rb-82. None 5. A patient is required to extend the arms above the head during a PET/CT scan. Which of the following is the possible reason? Helps the patient to hold breath Maximizes extension of the spine Reduces possible artifact formation Minimizes the patient's movement during the Scan None 6. 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: Tumor. Bone marrow. Muscle. Blood pool. None 7. 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. 120 mg/dl. 200 mg/dl. 175 mg/dl. None 8. The concentration of glucose-6-phosphatase, an enzyme mediating dephosphorylation of FDG-6-phosphate, is low in most tumors EXCEPT: Hepatocellular carcinoma. Ductal carcinoma. Lung adenocarcinoma. Hodgkin lymphoma. None 9. All of the following scintigraphic methods are often used in the diagnosis of fever of unknown origin (FUO) EXCEPT: Labeled erythrocytes scintigraphy Labeled leukocytes scintigraphy Fluorodeoxyglucose-positron emission tomography (FDG-PET) Ga-67 citrate scintigraphy None 10. F-18 FDG uptake in tumors correlates with tumor: Shape and reproducibility. Volume and stability. Growth and viability. Size and contractility. 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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