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100
Which scientist first discovered X-Rays?
Wilhelm Konrad Roentgen
100
The time setting on the X-Ray machine is measure by using what method?
Fractions of a second or milliamperes
100
How often should surfaces in the dark room be disinfected?
Daily
100
A patient presenting with chronic spine pain should be ordered what type of radiograph?
AP Cervical Spine
100
What landmark is used when exposing the maxillary bicuspid area?
Beside the ala of the nose
100
What is the name of the tube that was discovered in 1895?
Crooke’s tube
25
What instruction is most important when ordering radiographs for female patients?
Ask the patient if she is pregnant
10
Who would not be allowed to order radiographs from the following: IDC, HM, PA, MO?
The HM
100
At what angle should the ankle be when taking an oblique radiograph?
30 degrees
25
True or False? The occlusal film packet contains two X-Ray films.
False.
300
Which of the following is NOT a characteristic property of X-Rays?
1. They travel in straight lines
2. They travel at the speed of sound
3. They cause irritation to living cells
4. They cause certain substances to fluoresce
2. They travel at the speed of sound
10
The film badge should be placed behind the lead lined barrier at least what number of feet from the tube head?
6 feet
10
All of the following are indications for a PA except for??
1. Pain with respiration
2. Chronic Cough
3. Asbestos
4. Rash and streaking
Rash and Streaking
10
What should be shielded when you are taking an X-Ray?
Reproductive organs
300
When checking for light leaks in the dark room, you should leave the penny on the X-Ray film for at least for at least how many minutes?
5 minutes
20
What is the rule that applies to the principle of radiation safety?
ALARA
400
Which of the following is NOT a safety precaution for taking radiographs?
1. Always stand behind a lead screen during exposure
2. Never stand in the path of the central X-Ray beam during exposure
3. Never hold the tube head or the tube head cylinder of the X-Ray machine during exposure
4. Hold the film packet in the patient's mouth during exposure if necessary
4. Hold the film packet in the patient’s mouth during exposure if necessary
400
What organ would not be seen in a KUB radiograph?
1. Kidneys
2. Bladder
3. Liver
3. Liver
25
The paralleling device consists of what parts?
A locator ring, an indicator rod, and a bite block
10
Which method is most commonly used to process dental radiographs in the Navy?
Automatic processing
25
When taking radiographs, will you always drape the patient with a lead apron? Yes or No?
yes.
500
Who is authorized to order and diagnostically interpret dental radiographs?
Dental Officers
500
Which structure will be seen in the AP projection of the cervical spine?
C3-T1
500
The bisecting angle technique is the preferred method and recommended for routine use when taking periapical radiographs. True or False?
False.
10
What is a procedure that should be included in the daily maintenance of the X-Ray machine?
Cleaning with a cloth moistened with water






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