NMT 2710
Exam 3 (70pts)
Name:_____________________________________Date:______________
1. The minimum number of particles of 99mTc-MAA to be injected for a lung perfusion
study is:
a. 20,000-50,000 b. 60,000-150,000 c. 1 million
d. There is no minimum
2. In shunt patency studies 99mTc-MAA is preferred over 99mTc-sulfur colloid because:
a. MAA is preferred because 99mTc-sulfur colloid has to be boiled
b. MAA is preferred because 99mTc-sulfur colloid has liver accumulation
c. MAA is preferred because 99mTc-sulfur colloid has a longer half-life
d. MAA is preferred because 99mTc-sulfur colloid has larger particles
3. T/ F. Diagnostic radiopharmaceuticals have no pharmacologic effect.
4. Liver/ spleen imaging with 99mTc sulfur colloid is begun how long after administration?
a. Immediately (flow) b. 15-20min c. 2hrs
d. 4hrs e. 24hrs
5. T/ F. A lymphoscintigraphy is a non-diagnostic test.
6. Which of the following views is least likely to be performed in a typical MUGA study?
a. Anterior c. Left Lateral
b. LAO d. Posterior
7. A source of error with lung imaging may be due to:
a. Pulmonary embolus
b. Drawing back on the syringe plunger before injection
c. Particles not stirred immediately before injection
d. Hypertension
e. B and C
f. A and C
8. All of the following procedures may be performed with Tc99m- sulfur colloid except:
a. Gastric emptying study
b. Gastroesophageal reflux study
c. Gastrointestinal bleeding localization
d. Meckel’s Diverticulum localization
9. When red blood cells are labeled with Tc99m using the in vivo method, in what order are
the reagents injected into the patient?
a. Stannous pyrophosphate and 99mTcO4- are administered simultaneously
b. Stannous pyrophosphate is administered 15-30 minutes before 99mTcO4-
c. Stannous pyrophosphate is administered 2-3 hrs before Tc99m-pertechnetate
d. 99mTcO4-is administered 15-30 minutes before stannous pyrophosphate
, 10. To determine the patency of a LeVeen shunt, the radiopharmaceutical is administered
where?
a. A vein
b. The peritoneal cavity
c. The intrathecal space
d. An artery
11. Calculate the percent esophageal reflux based on the following ROI’s. The bkg data has
already been corrected for ROI size.
ROI Counts per 30 seconds
Esophagus 2278
Esophagus bkg 178
Maximum stomach 45,600
12. After total thyroidectomy, total-body imaging with radioiodine normally will
demonstrate tracer concentration in which of the following areas?
a. Liver, lungs and bones
b. Salivary glands, stomach and bladder
c. Liver, salivary glands, stomach and lungs
d. Bladder, liver, and brain
13. How long after the administration of Tc99m-pertechnetate does imaging begin for the
localization of a Meckel’s Diverticulum?
a. Immediately
b. 1 hour
c. 2-3 hours
d. 24 hours
14. In gastric emptying studies, ______ mCi of _______ is administered _____.(3pts)
a. 0.5-1.0 b. 2-5 c. 5-10 d. 15-20 e. 20-30
f. NaTc99m O4- g. Tc99m SC h. Tl201-chloride i. Xe133
h. Orally i. I.V. j. IM k. intra-abdominally
15. The normal patient undergoing a Gastroesophageal reflux examination would
demonstrate ______ with an increase of mechanical abdominal pressure.
a. No reflux
b. Spontaneous reflux
c. Delayed reflux
d. Induced reflux
16. T / F. A reverse mismatch ventilation/perfusion lung scan is an indication of COPD.