FINAL EXAM NATIONAL BOARD OF EXAMINATIONS
APRIL 2016
POSSESSION USE OF CELL PHONES OR ANY SUCH ELECTRONIC GADGETS IS NOT PERMITTED INSIDE THE
EXAMINATION HALL.
NUCLEAR MEDICINE
PAPER I
NUC.MED/APRIL/16/24/I
Time 3 hours
Max. Marks 100
Important instructions:
• Attempt all questions in order.
• Each question carries 10 marks.
• Read the question carefully and answer to the point neatly and legibly.
• Do not leave any blank pages between two answers.
• Indicate the question number correctly for the answer in the margin space.
• Answer all the parts of a single question together.
• Start the answer to a question on a fresh page or leave adequate space between two answers.
• Draw table/diagrams/flowcharts wherever appropriate.
Write short notes on:
1. Principles of gas filled detectors and its uses in a high volume
Nuclear Medicine Department.
5+5
2. Thyroid intake probe.
Gamma well counter.
5+5
3. Methods of production of radionuclides.
Can cyclotron produced radionuclides replace other form
of radionuclides?
7+3
4. Derive the radioactive decay equation. Prove that product of
physical half life and decay constant is also constant.
5+5
5. Linear energy transfer.
Bremsstrahlung radiation.
5+5
6. If 1mCi of a radionuclide is adequately shielded by 6 HVLs of
lead, how many HVLs would be needed to have equal
shielding for 5 mCi 8 mCi of radionuclides
5+5
7. Photoelectric and Compton scattering processes.
5+5
8. Linear regression and least square fit.
Types of crystals used in PET scanner.
5+5
9. Discuss Cell Survival Curves and its relation to linear
quadratic model and linear non-threshold model.
5+2.5+2.5
10. Advantages of SPECT-CT hybrid imaging over SPECT
imaging in diagnostic evaluation.
10