OCTOBER 2018 Sub. Code: 4012
M.Sc. MEDICAL PHYSICS EXAMS
FIRST YEAR
PAPER II RADIOLOGICAL MATHEMATICS
Q.P. Code 284012
Time Three hours Maximum 100 marks
I. Elaborate on x 20 40)
1. In an attempt to plot Dose Response curve a bioassay was performed with
the following results. Find whether any relationship exists.
Log dose 0.3 0.6 0.9 1.2 1.5 1.8 2.1
Response 32 58 94 120 150 174 213
2. A study revealed that among 90 males 15 were obese and among 60 females 20 were
obese. Use chi square test to find whether sex and obesity are associated. (χ2=3.84 at
level).
Discuss precautions for applying chi square distribution.
II. Write notes on: (10 x 6 60)
1. Prepare the decay chart for cobalt-60 teletherapy isotope for the period of one
half- life.
2. Define signal to noise ratio.
3. Binominal distribution.
4. Ranga-kutta method.
5. Properties of F test.
6. Define: Truncation error Round-off error Relative error.
7. Calculate Mean, standard deviation for the following Diastolic blood pressure
data: 93, 90, 95, 85, 90, 78.
8. Evaluate 3 x4 dx using Trapezoidal rule Simpson's one-third rule.
9. Advantages of MATLAB.
10. Presentation of Data.