B.Sc-B.Sc Medical Technology 3rd Year BAHI-031 : BASICS OF RADIOLOGICAL PHYSICS (Indira Gandhi National Open University (IGNOU), New Delhi-2013)
B.Sc. IN MEDICAL IMAGING TECHNOLOGY
Term-End Examination
June, 2013
BAHI-031 : BASICS OF RADIOLOGICAL PHYSICS
Time : 3 hours Maximum Marks : 70
Note :
(i) This question paper contains two parts A & B.
Part A contain two parts : I part contains 10 Fill in the blanks.
(ii) II Part contains (6) questions, answer any (4) questions.
(iii) Part (B) contain (5) questions answer any (3) questions.
PART - A
I. Fill in the blanks. 10x2=20
1. The optical density of X-ray film is measured by
2. The degree of blackenss on a film depends upon the deposit of present.
3. Grids are used to Scattered Radiation.
4. Replenisher is added to the action of Developer.
5. The transmission ratio is the ratio between to
6. The walls of darkroom should be painted in
7. Light beam devise will help to radiation.
8. By increasing the size of the focal spot the geometric sharpness
9. The effect of light which after glows is called as
10. Computer Radiography is called as
II. Write short notes on any four of the following : 4x5=20
1. Safe light
2. Radiographic film
3. Amorphous selenium
4. Silver recovery
5. Latent Image
6. X-ray cassette.
PART - B
Answer any (3) questions. 3x10=30
III. (a) Explain the constituents of Fixer Solution.
(b) What are the factors that affect the fixing time ?
IV. Explain the test conducted for the following :
(a) Film screen contact
(b) Size of the focal spot
V. (a) Draw and explain a cross section of radiographic cassette
(b) What are the different types of cassette available ?
VI. (a) Difference between Manual Processor and Automatic Processor.
(b) Describe the manual processing procedure in detail.
VII. Write short notes on following :
(a) Dichroic fog
(b) Chemical fog
(c) Air bells
(d) Reticulation mark
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