Nuclear medicine exam review 2024

Static bone imaging is routinely performed how long after tracer administration to an adult: A)30min B)1hr C)2-3hr D)24hr - C)2-3hr. Static bone imaging performed with a labeled diphosphonate compound is routinely performed 2-3hr after tracer administration. Which of the following structures normally appear as areas of increased activity on the bone images of adults: A)anterior iliac crests B)glenoid fossa C)sternoclavicular joints D)all of the above - D)all the above. On bone images of adults, areas of normally increased tracer activity include all those listed as well as the sacroiliac, hip, and acromioclavicular joints and vertebral column. Which of the following conditions is visualized on a bone image as a photopenic area: A)attenuation B)tracer infiltration C)acute myocardial infarction D)osteomyelitis - A)attenuation. A photopenic area is one in which a smaller number of photons is visualized-a cold spot. A material that absorbs photons may cause an attenuation artifact, an area of falsely decreased tracer concentration(jewelry, belt buckles, pacemaker) It is safe to block a portion of the pulmonary circulation with MAA particles in patients with suspected PE because: A)# of injected particles block only a small number of precapillary arterioles B)particles are made from albumin isolated from human serum - A)# of injected particles blocks only a small number of precapillary arterioles. Less than 1% of the precapillary arterioles are blocked with the MAA particles; therefore, there is no adverse effect on the patient. A nebulizer is used to administer which of the following lung ventilation radiopharmaceuticals: A)81mKr gas B)133Xe gas C)99mTc-pentetate D)99mTc-MAA - C)99mTc-pentetate. A nebulizer is a device that uses ultrasound or pressure to create airborne (aerosol) particles from a liquid. Which of the following radiopharmaceuticals may be used to image acute deep vein thrombosis in the lower extremities: A)99mTc-MAA B)99mTc-arcitumomab C)131I-iobenguane D)111In-oxyquinoline - A)99mTc-MAA is used to image acute deep-vein thrombosis in the lower extremities. In performing radionuclide venography with 99mTc-MAA, the radiopharmaceutical is administered at what site: A)antecubital of either arm B)either femoral vein C)dorsal veins on top of each foot D)either basilic vein - C)dorsal vein on to of each foot. The tracer is introduced into the deep venous system of the legs. Therefore, the tracer is administered into the dorsal vein of each foot. After total thyroidectomy, total-body imaging with radioiodine normally will demonstrate tracer concentration in which areas: A)liver, lungs, bones B)salivary glands, stomach, and bladder C)liver, salivary glands, stomach, lungs D)bladder, liver, brain - B) The salivary glands and saliva in the mouth, the gastric mucosa and secretions into the intestine, and the urinary bladder are sites that normally concentrate radioiodine. Concentrations in other sites indicate areas of functioning thyroid metastases. A parathyroid adenoma will concentrate which of the following radioparmaceuticals: A)123I-sodium iodide B)99mTc-pertechnetate C)99mTc-sestamibi D)99mTc-pertechnetate or 99mTc-sestamibi - C)99mTc-sestamibi When positioning a patient for an LAO view of a gated equilibrium ventricular function study, tilting the camera toward the patient's feet separates what two structures: A)left ventricle and aorta B)left ventricle and left atrium C)left and right atria - B)left ventricle and left atrium. The left atrium is partially hidden by the aorta and pulmonary artery. Tilting the detector caudally visually brings the left atrium out from under these structures and separates it from the left ventricle. Which tracer is excreted primarily via the hepatobiliary system: A)99mTc-sestamibi B)99mTc-exametazime C)99mTc-medronate D)201Tl-thallous chloride - A)99mTc-sestamibi A cardiac stress test requires the placement of how many electrodes on the patient's body: A)3 B)6 C)10 D)12 - C)10. A cardiac stress test requires a 12-lead ECG tracing, which uses 10 electrodes attached to the patient. 2 arm, 2 leg, and 6 chest leads. Visualization of bone marrow uptake on a 99mTc-sulfer colloid liver/spleen image is most likely the result of: A)improper colloid particle size B)insufficient tracer circulation time C)liver dysfunction D)overactive bone marrow - C)liver dysfunction. Bone marrow uptake is visualized on liver/spleen images when severe liver dysfunction, such as advanced cirrhosis, is present. During hepatobiliary imaging, which structure will NOT be visualized if cystic duct obstruction is present: A)common hepatic duct B)common bile duct C)gallbladder D)small intestine - C)gallbladder. If cystic duct obstruction is present, the tracer will be unable to enter the gallbladder. The cystic duct is the passage between the common bile duct and the gallbladder. How long after the administration of 99mTc-pertechnetate does imaging begin for the localization of a Meckel's diverticulum: A)immediately B)15-20min C)1hr D)2-3hr - A)immediately. For localization of a Meckel's diverticulum, imaging begins immediately after administration of the tracer. All of the following 99mTc-labeled radiopharmaceuticals may be appropriate for performing a left-to-right cardiac shunt exam using the first-pass method except: A)sulfur colloid B)pentetate C)sestamibi D)tetrofosmin - A)sulfur colloid. First-pass cardiac studies to identify or quantify left-to-right shunts are performed with radiopharmaceuticals that can be administered in small volumes of 20-25mCi. The glomerular filtration rate (GFR) is measured with which radiopharmaceutical: A)99mTc-pentetate B)99mTc-succimer C)99mTc-gluceptate D)99mTc-meritiatide - A)99mTc-pentetate. Determination of GFR requires an agent that is completely filtered by the glomeruli. 99mTc-pentetate (DTPA) is handled only by glomerular filtration. Radionuclide cystography is performed by the direct method using which radiopharmaceutical: A)99mTc-pentetate or medronate B)99mTc-pertechnetate or sulfur colloid C)99mTc-gluceptate or sulfur colloid D)99mTc-pertechnetate or mertiatide - B)99mTc-pertechnetate or sulfur colloid. Direct radionuclide cystography is performed by instilling 99mTc-pentetate, or sulfur colloid, into the urinary bladder. Imaging is performed as the bladder is filling and emptying. Filtered 99mTc-sulfur colloid is required for which of the following examinations: A)gastroesophageal reflux B)gastric emptying C)LeVeen shunt patency D)lymphoscintigraphy - D)lymphoscintigraphy. Although all procedures listed may be performed with 99mTc-sulfur colloid, only lymphoscintigraphy requires that sulfur colloid be filtered to remove the larger particles. A patient with a nasogastric tube in place is transferred to the NM dept for an imaging procedure. The technologist should: A)confirm physician orders for transfer and reestablish suction if required B)cancel study C)use the tube to administer tracer - A) Nasogastric tubes are used for gastric decompression. A physician must order the transfer and interruption of suction. The tech may be required to reestablish suction upon the patient's arrival in the department. The appearance of what structure indicates the beginning of the venous phase of a cerebral blood flow study: A)anterior cerebral arteries B)carotid arteries C)nasopharynx D)superior sagittal sinus - D)superior sagittal sinus. In a normal cerebral flow study, the first phase is the arterial phase, indicated by activity in the carotid and anterior cerebral arteries. The capillary phase is followed by the venous phase. In performing cisternograpy, the purpose of acquiring the first image over the lower thoracic/lumbar spine is to ascertain: A)the site of tracer administration B)the flow rate of the cerebral spinal fluid C)that the tracer was not infiltrated - C)that the tracer was not infiltrated. The injection site should be imaged first to confirm that the tracer has not infiltrated outside the subarachnoid space. Reinjections may be required if infiltration is confirmed.