Review Of Nuclear Medicine
Technology Exam-Graded A
[111In] Pentetreotide should not be administered through an intravenous line
containing. A. water B. a total parenteral nutrition mixture C. dextrose D. glucose E. 0.9
% sodium chloride. - ANS-B. A total parenteral nutrition mixture. 111In pentetreotide
should not be administered through an intravenous line containing total parenteral
nutrition ( TPN) mixture, because the tracer may from a complex with components of
the TPN mixture. Because the chemical from of the tracer is now altered, its distribution
in the body will change.
1. How does 201Tl decay? (a) By positron emission (b) By electron capture (c) By beta
emission (d) None of the above - ANS-B. By electron Capture with gamma emissions of
0.135 MeV and 0.167 MeV.
2. What is the role of the stannous ion in the preparation of pharmaceuticals labeled
with 99mTc? (a) To increase the valence state from +4 to +7 (b) To reduce the amount
of Al3+ present (c) To reduce the valence state of 99mTc (d) To reduce the radiation
dose - ANS-(c) Stannous chloride is a reducing agent which changes the valence state
of Tc in pertechnetate. It has no effect on either the amount of Al3+ or the radiation
dose.
3. If an assay of a vial containing 131I shows 50 mCi present on May 2, approximately
what will the assay show on May 18? (a) 25 mCi (b) 12.5 mCi (c) 40 mCi (d) 6 mCi -
ANS-(b) The half-life of 131I is 8.06 days. Since the time elapsed is about two half-lives,
the original activity would be halved twice
(50 mCi/2=25 mCi, 25 mCi/2= 12.5 mCi).
4. If a bone scan has been ordered on a 5-year-old girl and the physician prescribes
62% of the adult dose to be given, how many mCi should be administered? - ANS-(b)
20 mCi× 0.62= 12.4 mCi
5. If the biological half-life of an isotope is 6 h and the physical half-life is 12 h, what is
the effective half-life? - ANS-D 4 hours
6. Which of the following is using to abbreviate physical half-life? - ANS-A. TP
A biohazard warning label would be found on all of the following expect a: - ANS-d. unit
of blood released for clinical use... Biohazed warning labels are
, A technologist confirms a referring physicians request for a nuclear medicine procedure
for a hospitalized patient by: - ANS-C. Locating the order for the test in the patients
medical record. The referring physician initiates orders for diagnostic testing and enters
those orders in the patients medical record. It is the technologists responsibility to
confirm the orders for nuclear medicine test for each patient.
Before tracer administration, all the following preparations are required for a 27 year old
woman referred for total-body bone imaging except: A.)remove attenuating materials
from the patient. B)answer patient's questions C)rule out pregnancy D) explain the
procedure to the patient - ANS-D. explain the procedure, and answering any questions
the patients may have are preparation common to any procedure. If the patient is a
Dual-istope gastric emptying studies use which of the following radiopharmaceuticals for
each phase of gastric emptying? Liquid Phase A. [111In] Pentetate. B. [111In]
Pentetreotide. C. [99Tc] Sulfur colloid. D. [201 TI] Thallous Chloride. E. [99Tc]
Pentetate. Solid Phase: A. [99Tc] Sulfur colloid. B. [99Tc] Sulfur colloid. C. [111In]
Pentetate. D. [99Tc] Sestamibi E. [99Tc] Sulfur colloid. - ANS-A. [111In] Pentetate
[99Tc] Sulfur Colloid. When liquid and gastric emptying times are to be determined
simultaneously the solid phase is labeled with 99Tc Sulfur Colloid and the liquid phase
is mixed with 111In Pentetate.
During parathyroid imaging, images of the chest as well as the neck are obtained to:
A)correct the image series for patient motion B)visualize substernal parathyroid tissue
C)visualize ectopic thyroid tissue D)diagnose hyperparathyroidism. E. to localize the
parathyroid. - ANS-C .Visualize ectopic parathyroid
Effective renal plasma flow (ERPF) is measured with which of the following
radiopharmaceuticals? A. [99mTc] pentetate B. [99mTc] disofenin C. [99mTc]
medronate D. [99mTc] mertiatide E. [99mTc] exametazime. - ANS-D. [99mTc]
mertiatide MAG 3 ERPF is primarily a measurement of tubular function. Therefore, a
renal agent that is secreted by the tubulars must be used. 99mTc mertiatide is
secrected by the renal tubules and is used to detetmine ERPF.
Evaluating the quality of a bolus injection is best accomplished by which of the following
techniques? A. generating a time-activity curve for the superior vena cava. B.
calculating the cardiac transit time. C. determining the heart to lung ratio. D. imaging the
injection site for residual activity. E. visually inspecting the bolus. - ANS-A. generating a
time-activity curve for the superior vena cava. and measuring the full width at half
maximum(FWHM). If the left ventricular ejection faction is being determined, a FWHM
<1 second indicates a technically satisfactory bolus injection. For a right ventricular
ejection fraction, a FWHM of 2-3 sec is adequate.
For interpretation of nuclear medicine lung images, a chest X ray is required to: A. rule
out possible causes of the patients symptoms. B. determine cardiac size. C. rule out
previous lungs surgery D. rule out a pulmonary embolus E. rule in a pulmonary
embolus. - ANS-A.rule out possible causes of the patients symptoms.
Technology Exam-Graded A
[111In] Pentetreotide should not be administered through an intravenous line
containing. A. water B. a total parenteral nutrition mixture C. dextrose D. glucose E. 0.9
% sodium chloride. - ANS-B. A total parenteral nutrition mixture. 111In pentetreotide
should not be administered through an intravenous line containing total parenteral
nutrition ( TPN) mixture, because the tracer may from a complex with components of
the TPN mixture. Because the chemical from of the tracer is now altered, its distribution
in the body will change.
1. How does 201Tl decay? (a) By positron emission (b) By electron capture (c) By beta
emission (d) None of the above - ANS-B. By electron Capture with gamma emissions of
0.135 MeV and 0.167 MeV.
2. What is the role of the stannous ion in the preparation of pharmaceuticals labeled
with 99mTc? (a) To increase the valence state from +4 to +7 (b) To reduce the amount
of Al3+ present (c) To reduce the valence state of 99mTc (d) To reduce the radiation
dose - ANS-(c) Stannous chloride is a reducing agent which changes the valence state
of Tc in pertechnetate. It has no effect on either the amount of Al3+ or the radiation
dose.
3. If an assay of a vial containing 131I shows 50 mCi present on May 2, approximately
what will the assay show on May 18? (a) 25 mCi (b) 12.5 mCi (c) 40 mCi (d) 6 mCi -
ANS-(b) The half-life of 131I is 8.06 days. Since the time elapsed is about two half-lives,
the original activity would be halved twice
(50 mCi/2=25 mCi, 25 mCi/2= 12.5 mCi).
4. If a bone scan has been ordered on a 5-year-old girl and the physician prescribes
62% of the adult dose to be given, how many mCi should be administered? - ANS-(b)
20 mCi× 0.62= 12.4 mCi
5. If the biological half-life of an isotope is 6 h and the physical half-life is 12 h, what is
the effective half-life? - ANS-D 4 hours
6. Which of the following is using to abbreviate physical half-life? - ANS-A. TP
A biohazard warning label would be found on all of the following expect a: - ANS-d. unit
of blood released for clinical use... Biohazed warning labels are
, A technologist confirms a referring physicians request for a nuclear medicine procedure
for a hospitalized patient by: - ANS-C. Locating the order for the test in the patients
medical record. The referring physician initiates orders for diagnostic testing and enters
those orders in the patients medical record. It is the technologists responsibility to
confirm the orders for nuclear medicine test for each patient.
Before tracer administration, all the following preparations are required for a 27 year old
woman referred for total-body bone imaging except: A.)remove attenuating materials
from the patient. B)answer patient's questions C)rule out pregnancy D) explain the
procedure to the patient - ANS-D. explain the procedure, and answering any questions
the patients may have are preparation common to any procedure. If the patient is a
Dual-istope gastric emptying studies use which of the following radiopharmaceuticals for
each phase of gastric emptying? Liquid Phase A. [111In] Pentetate. B. [111In]
Pentetreotide. C. [99Tc] Sulfur colloid. D. [201 TI] Thallous Chloride. E. [99Tc]
Pentetate. Solid Phase: A. [99Tc] Sulfur colloid. B. [99Tc] Sulfur colloid. C. [111In]
Pentetate. D. [99Tc] Sestamibi E. [99Tc] Sulfur colloid. - ANS-A. [111In] Pentetate
[99Tc] Sulfur Colloid. When liquid and gastric emptying times are to be determined
simultaneously the solid phase is labeled with 99Tc Sulfur Colloid and the liquid phase
is mixed with 111In Pentetate.
During parathyroid imaging, images of the chest as well as the neck are obtained to:
A)correct the image series for patient motion B)visualize substernal parathyroid tissue
C)visualize ectopic thyroid tissue D)diagnose hyperparathyroidism. E. to localize the
parathyroid. - ANS-C .Visualize ectopic parathyroid
Effective renal plasma flow (ERPF) is measured with which of the following
radiopharmaceuticals? A. [99mTc] pentetate B. [99mTc] disofenin C. [99mTc]
medronate D. [99mTc] mertiatide E. [99mTc] exametazime. - ANS-D. [99mTc]
mertiatide MAG 3 ERPF is primarily a measurement of tubular function. Therefore, a
renal agent that is secreted by the tubulars must be used. 99mTc mertiatide is
secrected by the renal tubules and is used to detetmine ERPF.
Evaluating the quality of a bolus injection is best accomplished by which of the following
techniques? A. generating a time-activity curve for the superior vena cava. B.
calculating the cardiac transit time. C. determining the heart to lung ratio. D. imaging the
injection site for residual activity. E. visually inspecting the bolus. - ANS-A. generating a
time-activity curve for the superior vena cava. and measuring the full width at half
maximum(FWHM). If the left ventricular ejection faction is being determined, a FWHM
<1 second indicates a technically satisfactory bolus injection. For a right ventricular
ejection fraction, a FWHM of 2-3 sec is adequate.
For interpretation of nuclear medicine lung images, a chest X ray is required to: A. rule
out possible causes of the patients symptoms. B. determine cardiac size. C. rule out
previous lungs surgery D. rule out a pulmonary embolus E. rule in a pulmonary
embolus. - ANS-A.rule out possible causes of the patients symptoms.
