Sharpness of image on the film can be increased by 1) Large focal spot 2) Small focal spot 3) Decreased target-skin distance 4) Increased film-object distance
RadiologyAnswer: 2
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
RadiologyAnswer: 3
Horizontal unfavourable or favourable fractures of mandible can be viewed best in 1) Lateral oblique 30 degrees 2) Lateral oblique 15 degrees 3) PA view of mandible 4) Submentovertex view
RadiologyAnswer: 1
To obtain better information of cyst eroding the surface of cortex 1. Exposure time should be reduced 2. Exposure time should be increased 3. Voltage should be increased 4. Milliamperage increased
RadiologyAnswer: 1
Internal resorption may be seen on the radiograph as 1. Interproximal bone loss 2. Small radiolucent enlargement of the pulp chamber 3. Radiopacity in pulp chamber 4. Small area around the root apex
RadiologyAnswer: 2
X-rays were discovered in 1) Nov 1897 2) Oct 1985 3) Nov 1895 4) Nov 1890
RadiologyAnswer: 3
Waters projection is useful for eveluating 1) Frontal and ethmoidal sinuses 2) Maxillary sinus 3) Zygomaticofrontal suture and nasal cavity 4) All of the above
RadiologyAnswer: 4
Brown discolouration seen in old radiographic films is due to 1) Overdevelopment 2) Underdevelopment 3) Incomplete fixation 4) Exposure to light
