Dr. MGR University AUGUST 2013 Question Paper
Subject : PAPER III – RADIOBIOLOGY & RADIATION SAFETY
[LD 0212] Sub. Code: 1823B.Sc. RADIOLOGY IMAGING TECHNOLOGY /
B.Sc. RADIO DIAGNOSIS TECHNOLOGY
THIRD YEAR
PAPER III – RADIOBIOLOGY & RADIATION SAFETY
Q.P. Code: 801823
Time : Three Hours Maximum : 100 marks
Answer ALL questions
I. Elaborate on: (3 x 10 = 30)
1. Write short note on location of x-ray department in a hospital.
2. Describe the role of an administration in an X-ray department.
3. Describe important principles of radiation protection.
II. Write notes on: (8 x 5 = 40)
1. What is use periodic in-service training?
2. What is the concept of ALARA?
3. How are the radiation effects classified?
4. Construction of the dark room?
5. Explain X-ray room lighting.
6. Explain the Thyroid shielding?
7. Write short note on TLD?
8. Write short note on Maximize shielding?
III. Short Answers on: (10 x 3 = 30)
1. Patient holding.
2. What is chronic radiation dermatitis?
3. Film badges.
4. Write effective dose limits for tissue and organs.
5. Cassette conveyors.
6. Lead aprons.
7. What are the rest and recovery areas.
8. Calculation of space required for radiology in the non teaching hospital.
9. Environmental factors.
10. Effects of radiation on reproductive organs.
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Dr. MGR University FEBRUARY 2014 Question Paper
Subject : PAPER III – RADIOBIOLOGY & RADIATION SAFETY
[LE 0212] Sub. Code: 1823B.Sc. RADIOLOGY IMAGING TECHNOLOGY /
B.Sc. RADIO DIAGNOSIS TECHNOLOGY
THIRD YEAR
PAPER III – RADIOBIOLOGY & RADIATION SAFETY
Q.P. Code: 801823
Time : Three Hours Maximum : 100 marks
Answer ALL questions
I. Elaborate on: (3 x 10 = 30)
1. Explain two broad categories of harmful effects of radiation.
2. Summary of NCRP recommendation for radiation lose limits.
3. Describe the groups of patient at the area in an x-ray department and importance.
II. Write notes on: (8 x 5 = 40)
1. What are the sources of internal radiation exposure
2. Explain Medical radiation
3. What is meant by ALARA? Explain its significance.
4. Write does limit recommended by the NCRP
5. Write short notes on radiation protection and need for protection of a
pregnant radiographer?
6. How to reduce unnecessary patient dose?
7. Write short notes on cassette conveyors?
8. Write short notes on minimize time.
III. Short Answers on: (10 x 3 = 30)
1. What are two building materials available for the construction of radiation
protecting walls?
2. Who are ultimate persons for ensuring the radiation protection
recommendation in India?
3. X-ray room lighting.
4. What is chronic radiation dermatitis.
5. What are clinical features of radiation sickness?
6. Briefly describe work space factors.
7. Environmental factors calculation of space required in the non teaching hospital.
8. TLD.
9. Lead aprons.
10. Three steps of quality controls.
*******
Dr. MGR University AUGUST 2014 Question Paper
Subject : PAPER III – RADIOBIOLOGY & RADIATION SAFETY
[LF 0212] Sub. Code: 1823B.Sc. RADIOLOGY IMAGING TECHNOLOGY /
RADIOLOGY DIAGNOSIS TECHNOLOGY
THIRD YEAR
PAPER III – RADIOBIOLOGY & RADIATION SAFETY
Q.P. Code: 801823
Time : Three Hours Maximum : 100 marks
Answer ALL questions
I. Elaborate on: (3 x 10 = 30)
1. Describe in detail the three principles of radiation protection.
2. Explain about the biological effects of radiation.
3. Write in detail about the different methods of personnel monitoring and bring
out advantages of one over other.
II. Write notes on: (8 x 5 = 40)
1. Effective dose.
2. Workload calculation in diagnostic radiology.
3. Dose limits for radiation workers.
4. Internal exposure.
5. Back ground radiation exposure.
6. Radiation protection of patients.
7. Equipment radiation safety.
8. Biological dosimeter.
III. Short Answers on: (10 x 3 = 30)
1. What is recommended total filtration required to operate x-ray tube safely?
2. Recommended thickness of protection device aprons and gloves.
3. Table – Top exposure rate and Target to Table Top distance in fluoroscopy
4. Location of X-ray unit and area requirement for radiography procedures.
5. The exposure level at the distance of 50 cm is 16 mR/hr. What would be the
exposure level at the distance of 1 m and 25 cm?
6. Deterministic effect
7. Dose limit for students/trainees.
8. Viewing window in CT scan.
9. Mobile X-ray unit cable length.
10. Tissue weighting factors.
*******
Dr. MGR University FEBRUARY 2015 Question Paper
Subject : PAPER III – RADIOBIOLOGY & RADIATION SAFETY
[LG 0215] Sub. Code: 1823B.Sc. RADIOLOGY IMAGING TECHNOLOGY /
B.Sc. RADIO DIAGNOSIS TECHNOLOGY
THIRD YEAR
PAPER III – RADIOBIOLOGY & RADIATION SAFETY
Q.P. Code: 801823
Time : Three Hours Maximum : 100 marks
Answer ALL questions
I. Elaborate on: (3 x 10 = 30)
1. Describe the procedure and methods of AERB regulatory requirements to
design of diagnostic X-ray installation with neat layout sketch.
2. Explain about the somatic and hereditary effects of radiation with example.
3. Write in detail about the area monitoring and assess the status of radiation safety.
II. Write notes on: (8 x 5 = 40)
1. What are the early effects of radiation?
2. Control of hazard due to external exposure.
3. Dose limits for public.
4. ICRP 60.
5. Leakage radiation and permissible limit for x-ray tube housing.
6. Radiation protection of workers.
7. Fluoroscopy equipment radiation safety.
8. Registration of X-ray unit with AERB.
III. Short Answers on: (10 x 3 = 30)
1. What are procedures and tools to reduce patient dose?
2. Chromosome aberration.
3. Late effect of radiation.
4. Annual dose limit of radiation worker and pregnant radiation worker.
5. The level of exposure in working area is 2 mR/hr. How long one should permit
to work per day without exceeding the weekly permissible dose limit?
6. Equivalent dose.
7. Use factor.
8. Protection of general public.
9. What is the relationship between time and exposure?
10. Occupational exposure.
*******
Dr. MGR University AUGUST 2015 Question Paper
Subject : PAPER III – RADIOBIOLOGY & RADIATION SAFETY
[LH 0815] Sub. Code: 1823B.Sc. RADIOLOGY IMAGING TECHNOLOGY /
RADIOLOGY DIAGNOSIS TECHNOLOGY
THIRD YEAR
PAPER III – RADIOBIOLOGY AND RADIATION SAFETY
Q.P. Code: 801823
Time : Three Hours Maximum : 100 marks
Answer ALL questions
I. Elaborate on: (3 x 10 = 30)
1. Plan a diagnostic X-ray room setup with schematic diagram confirming AERB
recommendations.
2. Explain in detail various radiation protection tools / devices.
3. What is ALARA? Explain various methods to reduce patient dose in Fluroscopy.
II. Write notes on: (8 x 5 = 40)
1. Factors affecting radiation in diagnostic X-rays.
2. Thermoluminescent dosimeter, its advantages over film badge.
3. How to reduce patient dose in X-ray studies on children?
4. AERB regulations on warning signs at a Diagnostic X-ray room.
5. Permissible dose limits for public and radiation worker.
6. Patient dose reduction in CT – explain on Pitch, CT dose modulation.
7. How to assess radiation workload?
8. Importance of quality control in radiation safety.
III. Short Answers on: (10 x 3 = 30)
1. Radiation effects on eye.
2. Use and features of thyroid shield.
3. Sources of background ionizing radiation.
4. Importance of X-ray beam collimation.
5. Latency period for radiation induced cancer.
6. Skin entrance dose, how to reduce it?
7. Equivalent Dose, How do we equate effects of different kinds of radiation?
8. Cumulative dose, why is this relevant in radiation safety?
9. Use of Lead goggles.
10. Inverse square law, its application.
*******
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