Nuclear medicine stuvia Study guides, Class notes & Summaries

The physical half-life of a radionuclide is the time it takes A. For half of the substances to leave the body B. For the kit to become half expired C. For half of the substance to be metabolised D. For the nuclide to decay to one half of the original activity - ANSWERD. For the nuclide to decay to one half of the original activity Which of the following can be said regarding effective half-life? A. It is always longer than the physical half-life B. It is always shorter than physical hal...

A patient with a chest tube arrives in the nuclear medicine department for an Imaging study. The technologist should: A. Cancel the procedure because the chest tube apparatus will interfere with the study B. Place the chest tubes external apparatus on the Imaging table next to the patient C.Hang the chest tubes external apparatus from an IV pole and raise it above the patient's chest D.Place the chest tubes external apparatus on a level lower than the patient's chest -ANSWER D. Pla...

one advantage of the in vivo method of Tc99m red cell tagging is that: -ANSWER no manipulation of blood samples outside the body is required boiling a Tc99m sulfur colloid preparation for too long will result in colloidal particles that are: -ANSWER too large Which of the following components in a Tc99m medronate prep is a radiochemical impurity? a. aluminum b. Mo99 c. 0.9% NaCl d. Tc99m pertechnetate e. ascrobic acid -ANSWER Tc99m pertechnetate which of the following image finding...

The following WB bone image represents: a) an anterior/posterior WB bone scan b) a patient with epiphyseal growth plate activity c) a positive image display capability d) all of the above -ANSWER d all of the above The inclusion of SPECT/CT imaging during a bone scan: a) Allows for shorter imaging times during a bone scan. b) Provides structural and functional data combined. c) Provides 3-D anatomical data only. d) Is necessary in all bone scan studies. -ANSWER b provides structural a...

Before tracer administration, all of the following preparations are required for a 27- year- old woman referred for total-body bone imaging except -ANSWER removing attenuating materials from the patient Which of the following structures normally appear as areas of increase activity on the bone images of children -ANSWER costochondral junctions and epiphyseal plates If the tracer concentration is visualized in the skeleton, stomach, thyroid, and salivary glands on a bone image, the most lik...

Gas Ventilation - ANSWERXe 133, 81 KeV, 5.3 half life; reactor produced dose: 10-20 mCi imaging: posterior position negative pressure room required uses activated charcoal trap to accumulate the exhaled xenon gas until decayed to background single breath: during inhalation wash in / equilibrium : collected while the xenon distributes through aerated portions of the lung wash out : while radioactivity is cleared from lungs Sr 89 Chloride - ANSWERStrontium Chloride, Metastron 1.46 MeV m...

Basic Gamma Camera Components -ANSWER Collimator, NaI scintillation crystal, light guide, PMT array How does the collimator work? -ANSWER Controls which gamma rays are accepted by absorptive collimation, forming a projected image of the distribution on the surface of the crystal. What information do event signals contain? -ANSWER Position and energy information (could also contain time information). Reflective Material Around Crystal -ANSWER Maximizes light output. Aluminum Casing Ar...

In imaging with 67Ga-citrate, target-to-background ratio increases over time because of gallium concentration in tissue: remaining the same while blood clearance progresses decreasing while blood clearance progresses remaining the same while blood clearance decreases decreasing while blood clearance decreases -ANSWER remaining the same while blood clearance progresses Following the injection of 67Ga-citrate, imaging can begin: immediately at one hour at three hours at six hours -ANSWE...

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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 - ANSWER-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)attenuati...