MDS PREP
Which of the following is/are Secreted by macrophages?
1, Coagulation proteins V. VII. IX, X/ plasmin
2. Cytokines IL-I C. Growth factor
4. All of the above
Screen films differ form non-screen films in that
1) They are more sensitive to light than X-rays
2) They are more sensitive to X-rays than light
3) They are usually used in intraoral radiography
4) They do not need intensifying screens
Radiology
Answer: 2
Radiation injury to the haemopoietic system of the bone marrow occurs when the whole body exposure ranges between
1) 50-100 rads
2) 200-1000 rads
3) 1000-5000 rads
4) 10,000 rads to more
Radiology
Answer: 2
Image of a hair appears on a radiograph which was exposed in a cassette. The hair would have been located in all of the following to produce this image except in
1) On the front of the cassette
2) Between film and front intensifying screen
3) Between film and back intensifying screen
4) On the film during development
Radiology
Answer: 1
The facial aspect of an intraoral film is determined by the
1) Anatomic landmarks
2) Concavity of the embossed dot
3) Convexity of the embossed dot
4) Curvature of the arch
Radiology
Answer: 3
Dead bone appears on a radiograph as
1) Radiolucent
2) Radiopaque
3) Cotton wool appearance
4) Salt and pepper appearance
Radiology
Answer: 2
...............is not a property of X-rays
1. Ionization
2. Action on photographic film
3. Excitation
4. Collimation