MAY 2017 Sub. Code: 4017
M.Sc. MEDICAL PHYSICS EXAMS
FIRST YEAR
PAPER VII PHYSICS OF RADIATION THERAPY
Q.P. Code 284017
Time Three hours Maximum 100 Marks
I. Elaborate on: x 20 40)
1. Construction and working of telecobalt unit and its source design.
2. Output calibration of high energy X-ray beam using IAEA TRS 398 protocol.
II. Write notes on: (10 x 6 60)
1. Beam directional devices.
2. Wave guides for wave acceleration.
3. Central axis dosimetry parameters- TAR, TMR and SAR.
4. Isodose curve and charts.
5. Comparison of SSD and SAD techniques.
6. Integral dose.
7. Any two methods of tissue Inhomogeneity correction.
8. Bragg peak.
9. Advantage of remote after loading system over manual after loading
systems.
10. Dose volume histograms.