BASIC PRINCIPLE OF RADIOIGRAPHY OCT 2017

Diploma IInd year Radiation Technology

OCT-2017

BASIC PRINCIPLE OF RADIOIGRAPHY, RADIATION HAZARDS AND PROTECTION

Paper-III

Time - Three Hours 

Maximum Marks : 100

Question NO. 1 is Compulsory
Attempt any FIVE from rest of the questions.

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1. Describe the principle of brachytherapy and explain various radioisotopes used in brachytherapy.  Give its advantage and disadvantage over teletherapy.

2. Describe the following :

    a) Units to measure radiation given by a Radioactive material.

    b) Unit used to measure radiation absorbed by a person.

    c) Radiation units for measuring biological risk.

3. Write short notes on following

    a) GM counter

    b) TVT

    c) OSLD

    d) Therapeutic Ratio

4. I) Draw the block diagram of linear accelerator machine.

    II) Describe the following components in it

         a) Klystron       b) Flatening filter       c) Bending Magnet       d) Magnetron

5. I)Explain the principle of radiotherapy and describe the 4'R rule in the cancer treatment.

    II) Explain the type of interaction of photon which is most common in radiotherapy.

6. Write short notes on :

    a) Deterministic effect of radiation

    b) Pair production

    c) Interstitial Brachytherapy

    d) Ionization chamber

7. I)Describe radioactivity and explain various nuclear reactions.

    II) Describe the structure of an atom

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