MDS PREP
The technique employed in radiotherapy to counteract the effect of tumour motion due to breathing is known as
1. Art technique
2. Modulation
3. Gating
4. Shunting
Radiology
Answer: 3
The technique employed in radiotherapy to counteract the effect of tumour motion due to breathing is known as gating.
Zonography is a type of
1. CT scan
2. Radionuclide imaging
3. Panoramography
4. MRT
Radiology
Answer: 3
Zonography is a type of panoramography.
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.
When solution temperature is 20 degree celdcius recommended time of developing a X-ray film
1) 4 min
2) 4.5 min
3) 5 min
4) 6 min
Radiology
Answer: 2
The recommended time for developing an X-ray film at a solution temperature of 20 degrees Celsius is 4.5 minutes. This time may vary slightly depending on the specific developing solution and film type, but 4.5 minutes is the commonly suggested time to ensure proper exposure and development.
Best X-ray for mesiodens is
1. Occlusal
2. PA view
3. Panorex
4. Bitewing
Radiology
Answer: 1
The best X-ray for mesiodens is occlusal.
All of the following form radiolucent stones except
1. Xanthine
2. Cysteine
3. Allopurinol
4. Orotic acid
Radiology
Answer: 4
All of the following form radiolucent stones except orotic acid.
Fogging of X-ray film affects the contrast of an intraoral film because it
1. Produces phosphorous crystals on the film
2. Decreases film density resulting in a light radiograph
3. Produces white speckles on the firm
4. Increases film density resulting in an overall gray radiograph
Fogging of X-ray film affects the contrast of an intraoral film because it increases film density resulting in an overall gray radiograph.
All of the following are radiolucent except
1. Ameloblastoma
2. Cementoblastoma
3. Keratocyst
4. Central giant cell granuloma
Radiology
Answer: 2
All of the following are radiolucent except cementoblastoma.