Radiology #4

1. Filters are used in the xray beam to

Increase density

Reduce density

Reduce exposure size of the beam

Reduce patient radiation dose

2. You have taken a radiograph of a patient with a large skeletal build . the resulting image does not show the bone trabeculation well and appers to underpenetrated. the adjustment that should be made for the retake is

Reduce the ma

Reduce the exposure time

Increase the kvp

Reduce the kvp

Check the processing solution temperature

3. In taking the radiograph you did not center the beam on the film in the patient mouth. the resulting film will show

Fogging

Overlapping

Elongation

Collimator cutoof cone cutting

Foreshortening

4. The milliampere control dial on the dental x ray mchine

Regulates the step up transformer

Determines the penetration of the x ray

Regulates the guality of the radiation

Regulates the quantity of the radiation

Regulates scatter radiation

5. The radiation inspector comes to your office and tells you that your x ray beam has an hvl of 1.00mm of aluminum you should

Feel assured theat the beam mets the recommended standards

Be concerned becaused of the unnecessary seconday radiation to your patients

Be concerned because the beam is too penetrating

Add more filtration

Use a different pid

6. Proper collimation of the x ray beam fog film size and focal film distance will

Improve image definition

Increase radiographic contrast

Increase the intensity of the central beam

Increase secondary radiation

Reduce primary radiation

7. The dental x ray machine in your office operates at 90kvp and thus is required to have a total filtration of

2.75 inches of aluminum

2.5 inches of aluminum

2.0 mm of aluminum

2.5mm of aluminum

1.5 mm of aluminum

8. The best way to describe the penetration of an x ray beam is by its

Half value layer

Kilovoltage

Milliamperage

Rad output

Roentgen output