MDS PREP
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: 4
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 on the film during development.
30 degrees occipitomental view is used best for viewing
1. Rim of the orbit
2. Root of the orbit
3. Floor of the orbit
4. Both A and C
Radiology
Answer: 4
The 30-degree occipitomental view is best for viewing both the rim and floor of the orbit.
Which of the following has a radiolucency closest to the dentin
1. ZOE
2. Calcium hydroxide
3. Silicophosphate
4. Gutta percha
Radiology
Answer: 3
Which of the following has a radiolucency closest to the dentin: silicophosphate.
Fogging on the radiographs is the result of
1. Increase in humidity
2. Scattered radiation
3. Overdevelopment
4. All of the above
Radiology
Answer: 4
Fogging on the radiographs is the result of all of the above: increase in humidity, scattered radiation, overdevelopment.
"Step ladders" effect in PA views of skull is found in
1. Sickle cell anaemia
2. Ameloblastoma
3. Osteogenic sarcoma
4. Ewing"s sarcoma
Radiology
Answer: 1
The "step ladders" effect in PA views of the skull is found in sickle cell anaemia.
Multiple radiolucencies are common in all of the following except
1. Multiple myeloma
2. Hyperparathyroidism
3. Osteopetrosis
4. Metastatic tumours of bone
Radiology
Answer: 3
Multiple radiolucencies are common in all of the following except osteopetrosis.
In reverse Townes projection central X-ray passess through
1. Maxillary sinus
2. Occipital bone
3. Buperior border of petrous
4. Inferior border of petrous
Radiology
Answer: 2
In reverse Townes projection, the central X-ray passes through the occipital bone.
Yellowish-brown staining of the IOPA dental X-ray film is due to
1. Immersion in fixer without washing
2. Increased temperature of developer
3. Increased exposure time
4. Drying away of the developer solution
Yellowish-brown staining of the IOPA dental X-ray film is due to immersion in fixer without washing.