FEBRUARY 2018 Sub. Code: 1907
B.Sc. RADIOTHERAPY TECHNOLOGY
FIRST YEAR
PAPER II BASIC PHYSICS, RADIATION PHYSICS AND BASIC OF
CLINICAL RADIOGRAPHY/IMAGING
Q.P. Code: 801907
Time: Three Hours Maximum: 100 Marks
Answer all questions
I. Elaborate on: x 10 30)
1. With a neat diagram, describe in detail the principle, construction and
working of a rotating anode x-ray tube.
2. Describe in detail natural and artificial radioactivity.
3. With neat graphs explain in detail the factors affecting the quality and
quantity of x-rays.
II. Write notes on: x 5 40)
1. Electromagnetic spectrum.
2. Principle and working of computed tomography
3. Magnetic effect of current.
4. Atom and its constituents.
5. Electron capture and internal conversion.
6. Construction of x-ray film.
7. Quantum theory of radiation.
8. Image intensifier.
III. Short answers on: (10 x 3 30)
1. Filters used in x-ray tube.
2. Define electric potential and give its unit.
3. Image unsharpness.
4. Define specific activity and give its unit.
5. Define tenth value thickness (TVT).
6. Define optical density.
7. Define fluorescence.
8. Single photon emission computed tomography (SPECT).
9. Image sequencing in Magnetic Resonance Imaging.
10. Difference between isotope and isobars.