Midterm 1: Medical Imaging (PDF)

1\. Patient's glucose level should be checked before FDG  injection , what is the cut off value? a)           350 mg/dL is considered acceptable. b)           300 mg/dL is considered acceptable. \*c)            200 mg/dL is generally considered acceptable. d)           400 mg/dL is considered ac...

1\. Patient's glucose level should be checked before FDG  injection , what is the cut off value? a)           350 mg/dL is considered acceptable. b)           300 mg/dL is considered acceptable. \*c)            200 mg/dL is generally considered acceptable. d)           400 mg/dL is considered acceptable.   2\. The Normal distribution of F-18 fluorodeoxyglucose (FDG): a)           Uptake is intense in the blood vessel , bone, ovary, and uterus. \*b)           Uptake is intense in the brain and urinary tract, moderately intense in the    liver, and variable in muscles, heart, and bowel. c)            Uptake is intense in the lung  and bone, liver, and bowel. d)           Uptake is intense in the lymph node , skin,  and bone.   3\. Choose one  **limitation** of PET  F-18 fluorodeoxyglucose: a)           The lack of a need for cell labeling. b)           Short study duration (generally at 45--60 min) after the administration. c)            Superior resolution. \*d)           Normal uptake in structures such as the bowel, muscles, and ureters can be mistaken for tumor. 4\. Regarding PET imaging with the glucose analog F-18 fluorodeoxyglucose , choose the correct statement: a)           most clinical PET imaging is currently done with the nitrogen analog. \*b)           Malignant cells are usually more metabolically active than normal tissues and tend to accumulate higher levels of glucose. c)            Pet Imaging Is Less Sensitive Compared To SPECT Imaging. d)           Tc-99 Radiolabeled white blood cells is PET agent.   5\. Which one is considered as a  PET radioactive isotopes: \*a)           fluorine-18 FDG. b)           Technetium-99m MDP c)            Tc99m sulfur colloid d)           Radiolabeled white blood cells   6\. Regarding Brown adipose tissue (BAT) or "brown fat" choose the correct statement: \*a)           Normal variant FDG activity in the fat of the neck and supraclavicular region. b)           Abnormal uptake. c)            Refer patient to do more imaging. d)           Considered as malignancy.   7\. Before reporting FDG scan, one of the important things to consider is (choose the correct): \*a)           FDG is not a specific tracer for detecting tumor cells, it can be seen in infection and inflammation processes. b)           FDG is a specific tracer and can differentiate between benign and malignant. c)            FDG can substitute histopathology results. d)           FDG tracer can be used to assess left heart ventricle function.   8\. Regarding radiation therapy planning the most common treated tumor  is: a)           Hodgkin lymphoma. b)           Liver cancer. c)            heart masses. \*d)           Non-small cell lung cancer.   9\. Which one is considered as FDG-PET/CT advantage: \*a)           FDG is useful in patients with renal failure or those who are allergic to contrast media. b)           FDG is not indicated in Hodgkin lymphoma. c)            FDG scanning time is shorter than enhanced CT scan. d)           FDG is not indicated in infection at all.   10\. Regarding Physiology of Myocardial Cell Glucose Metabolism (choose the correct): a)           Intake of carbohydrates suppress insulin secretion. b)           In the absence of glucose, inflammatory cell utilize free fatty acids for metabolism. c)            inflammatory cell can use both glucose and free fatty acids for metabolism. \*d)           Normal myocytes can use both glucose and free fatty acids for metabolism.