Image sharpness on a radiograph is increased by 1. Increasing the film speed 2. Increasing the object filem 3. Using a small focal spot size 4. Using a large focal spot size
RadiologyAnswer: 3
Disadvantages of using a GRID during radiography is 1) Increased patient exposure 2) Decreased exposure time 3) Increased secondary radiation fog to film 4) Reduces secondary radiation to film
RadiologyAnswer: 1
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
RadiologyAnswer: 4
Quantity of current can be increased by 1) Increased milliamperage 2) Increased time 3) Increased tube current 4) All of the above
RadiologyAnswer: 4
Which of the following is most sensitive to radiation induced cancer 1) Nerves 2) Female breast 3) Thyroid 4) Skin
RadiologyAnswer: 2
If the size of object is 20 cm, object-film distance is 5 cm and source-film distance is 25 cm, what is the size of object on film 1. 20 cm only 2. 21 cm only 3. 25 cm only 4. 22 cm only
RadiologyAnswer: 3
At 80 kVp and 15 mA and target film distance of 8 cm, exposure time is 8 seconds. The exposure time at 4 cm is 1. 4 seconds 2. 2 seconds 3. 1 second 4. 1/4 second
RadiologyAnswer: 2
Radiation dose to patient can be reduced by all of the following except 1) Speed films 2) Filters 3) By increasing target-object distance 4) Decreasing kilovoltage potential
