FEBRUARY 2017 Sub.Code :1932
B.Sc. RADIOTHERAPHY TECHNOLOGY
(New Syllabus 2014-2015)
SECOND YEAR
PAPER II RADIOTHERAPY EQUIPMENTS, APPLICATIONS AND
MAINTENANCE
Q.P. Code: 801932
Time: Three Hours Maximum 100 Marks
Answer All Questions
I. Elaborate on: x 10 30)
1. Explain with diagram about the working of High Dose Rate remote
afterloading Brachytherapy.
2. Define Percentage Depth Dose and explain in detail the factors affecting them.
3. Explain the different applications of Brachytherapy in detail.
II. Write Notes on: x 5 40)
1. Principle and working of a vande graff generator.
2. Radiation Field Analyzer and its uses.
3. Write the different shutter mechanisms to move the source to ON and
OFF in telecobalt unit.
4. Explain front and back pointer with diagram.
5. Explain with diagram the commercially available multi leaf collimators.
6. Write about Intraluminal Brachytherapy.
7. Explain about the different electron interactions with matter.
8. Describe about the Low Dose Rate Bhabha Atomic Cesium-137 kit.
III. Short Answers on: (10 x 3 30)
1. Define Tissue Air Ratio.
2. Define Physical Penumbra.
3. Define Isocentre.
4. What is motorized Wedge?
5. Draw a diagram of a linear accelerator head in photon mode.
6. What are isodose charts and its uses?
7. What are the factors used for treatment time calculation in SSD technique?
8. Heavy Particle beams.
9. Define the Depth of Dose maximum (Dmax).
10. What is timer error?