Saudi Nuclear Medicine Club " Quiz #3 " @saudi_nmc

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| By Zeem

Zeem

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Quizzes Created: 5 | Total Attempts: 784

Questions: 10 | Attempts: 117 | Updated: Mar 20, 2023

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Saudi Nuclear Medicine Club " Quiz #3 " @saudi_nmc - Quiz

" Quiz #3 " @saudi_nmc
Time: 15mins
10 Questions [ 10 multiple-choice ]
Number of Attempts Allowed: 2
Good Luck :)

Questions and Answers

1.

1. If the biological half-life of an isotope is 6 hours, and the physical half-life is 12 hrs, what is the effective half-life?
- A.
  
  6 hrs
- B.
  
  12 hrs
- C.
  
  2 hrs
- D.
  
  4 hrs
Correct Answer
D. 4 hrs

Explanation
If a radioactive compound with radioactive half-life (t1/2) is cleared from the body with a biological half-life tb, the effective half-life (te) is given by the expression:

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2.

2. How does 201Tl decay?
- A.
  
  By positron emission
- B.
  
  By electron capture
- C.
  
  By beta emission
- D.
  
  none of the above
Correct Answer
B. By electron capture

Explanation

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3.

3.A perfusion lung scan is being quantified. If counts obtained from an ROI around the left lung are 142,857 and the counts within the ROI about the right lung are 195,246 ,what percentage of perfusion is directed to the right lung?
- A.
  
  28%
- B.
  
  42%
- C.
  
  58%
- D.
  
  65%
- E.
  
  73%
Correct Answer
B. 42%

Explanation
shunt= total count – lung count / total count *100
338.103-195.246/338.103 *100=42%

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4.

4. All the following are true about Rubidiem-82 EXCEPT?
- A.
  
  It produced from strontium-82/Rb-82 generator
- B.
  
  It decays 95% by electron capture and 5% by positron emission
- C.
  
  The relative myocardial extraction and localization of Rb-82 are proportional to blood flow
- D.
  
  It is taken up into the myocardium by active transport
Correct Answer
B. It decays 95% by electron capture and 5% by positron emission

Explanation
It decays 95% by positron emission and 5% by electron capture

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5.

5. Concerning the equilibrium type for 99Mo decaying to 99mTc in a generator. Which one of the following is True
- A.
  
  Secular Equilibrium
- B.
  
  Transient Equilibrium
- C.
  
  No Equilibrium
- D.
  
  Secondary Equilibrium
- E.
  
  Infinite Equilibrium
Correct Answer
B. Transient Equilibrium

Explanation
Transient equilibrium is a situation in which equilibrium is reached by a parent-daughter radioactive isotope pair where the half-life of the daughter is shorter than the half-life of the parent.

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6.

6. Generators are used to produce radionuclides. Which one of the following is not produced from a radionuclide generator?
- A.
  
  99mTc
- B.
  
  82Rb
- C.
  
  68Ga
- D.
  
  81mKr
- E.
  
  67Ga
Correct Answer
E. 67Ga

Explanation

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7.

7. Which of the following is excreted by Glomerular Filtration?
- A.
  
  99mTc-DTPA
- B.
  
  99mTc-DMSA
- C.
  
  99mTc-MAG3
- D.
  
  99mTc-GH
Correct Answer
A. 99mTc-DTPA

Explanation

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8.

8. All the following are myocardial PET Tracers EXCEPT
- A.
  
  Nitrogen-13 Ammonia
- B.
  
  Fluorine-18-fluorocholine
- C.
  
  Carbon-11
- D.
  
  Fluorine-18 Fluorodeoxyglucose
Correct Answer
B. Fluorine-18-fluorocholine

Explanation
Perfusion AGENT :N-13 R82 O15
Fatty Acid Metabolism: Carbon-11
Glucose Metabolism: Fluorine-18 Fluorodeoxyglucose
18F-fluorocholine PET/CT in imaging of parathyroid adenoma.

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9.

9. Hodgkin’s disease is a type of:
- A.
  
  Lung cancer
- B.
  
  Lymphoma
- C.
  
  AIDS
- D.
  
  Lupus
Correct Answer
B. Lymphoma

Explanation

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10.

10. Concerning the Pulse Height Spectrum from ¹³⁷Cs shown above . Which one of the following is the Photopeak
- A.
  
  A
- B.
  
  B
- C.
  
  C
- D.
  
  D
- E.
  
  E
Correct Answer
A. A

Explanation
Based on the information given in the question, it is implied that there is a pulse height spectrum from 137Cs shown above. The question asks which one of the options (A, B, C, D, E) represents the Photopeak. Without any further context or information about the pulse height spectrum or 137Cs, it is not possible to determine the correct answer.

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Current Version
Mar 20, 2023

Quiz Edited by
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May 11, 2020

Quiz Created by
Zeem

Saudi Nuclear Medicine Club " Quiz #3 " @saudi_nmc

1. If the biological half-life of an isotope is 6 hours, and the physical half-life is 12 hrs, what is the effective half-life?

2. How does 201Tl decay?

3.A perfusion lung scan is being quantified. If counts obtained from an ROI around the left lung are 142,857 and the counts within the ROI about the right lung are 195,246 ,what percentage of perfusion is directed to the right lung?

4. All the following are true about Rubidiem-82 EXCEPT?

5. Concerning the equilibrium type for 99Mo decaying to 99mTc in a generator. Which one of the following is True

6. Generators are used to produce radionuclides. Which one of the following is not produced from a radionuclide generator?

7. Which of the following is excreted by Glomerular Filtration?

8. All the following are myocardial PET Tracers EXCEPT

9. Hodgkin’s disease is a type of:

10. Concerning the Pulse Height Spectrum from 137Cs shown above . Which one of the following is the Photopeak

10. Concerning the Pulse Height Spectrum from ¹³⁷Cs shown above . Which one of the following is the Photopeak