[LO 0219] FEBRUARY 2019 Sub. Code: 1838
B.Sc. RADIOLOGY IMAGING TECHNOLOGY
(New syllabus 2014-2015)
THIRD YEAR
PAPER III QUALITY CONTROL, RADIOBIOLOGY AND RADIATION
SAFETY IN RADIODIAGNOSIS IMAGING
Q.P. Code: 801838
Time: Three Hours Maximum: 100 Marks
Answer all questions
I. Elaborate on: x 10 30)
1. Explain two broad categories of harmful effects of radiation.
2. Write about various tests, their frequency and tools required for quality
assurance of radiographic units.
3. Write in detail about the different methods of personal monitoring and
mention their advantages.
II. Write notes on: x 5 40)
1. AERB regulations on warning signs at a diagnostic X-ray room.
2. How to reduce patient dose in X-ray studies on children?
3. Maximum permissible dose limits for public and radiation worker.
4. How to assess radiation work load?
5. Importance of quality control in radiation safety.
6. Total filter estimation.
7. Leakage radiation.
8. Film storage quality control.
III. Short answers on: (10 x 3 30)
1. Densitometer.
2. Timer linearity test.
3. Sensitometer.
4. CT dose index check.
5. Recommended thickness of protection devices like aprons, gonad shield,
thyroid shield and gloves.
6. What is recommended total filtration required to operate X-ray tube safely?
7. Table top exposure rate and target to table distance in fluoroscopy.
8. Deterministic effect.
9. Dose limit for students/trainees.
10. Three steps of Quality control.