Rad Exam Study Guide A Questions and
Answers
List the six uses of dental images. - Answer-1) detect dental caries
2) identify bone loss in early stages
3) locate abnormalities
4) evaluate growth & development
5) provide info during procedures (endo)
6) document a patients condition at a specific time
The dental x-ray machine has three primary components. What are they and list first the one is said to
be the heart of the generating system? - Answer-1) the tube head (the heart)
2) the extension arm
3) the control panel
The _________ and __________ must be used on ALL patients for ALL exposures. - Answer-The lead
apron and thyroid collar
List the three rules of radiation protection. - Answer-1) never stand in the direct line of primary beam
2) always stand behind a lead barrier, or thick drywall
, 3) stand right angle of beam and never stand closer than 6ft
Define radiopaque and give some examples of what would appear as radiopaque on a radiograph. -
Answer-radiopaque is structures that appear white and gray on radiograph
example) mental, enamel, dense areas
What is electromagnetic radiation made up of and how fast does it travel? - Answer-photons that travel
through space at the speed of light in a straight line in one motion.
There are three types of radiation, list them with a short definition. - Answer-1) primary: x ray beam
that came from the target of the tube
2) secondary: x radiation created when primary beam interacts with matter
3) scatter: x-ray beam deflects it's path
Density is DIRECTLY controlled by what? - Answer-milliamperage (mA) and exposure time
Describe low contrast and state if it is generally preferred or not preferred. - Answer-many shades of
gray and generally preferred
Define quality assurance and what it would practically include in a dental office. - Answer-is a way of
ensuring that everything possible is being done to produce high quality diagnostic images. it includes
control tests, keeping schedule of maintenance, and record keeping logs.
The steps of processing with the correct purpose. - Answer-1) developing- first step in processing
2) rinsing- removes the developer
3) fixing- hardens the film
4) washing- follows fixation
5) drying- final step in processing
Answers
List the six uses of dental images. - Answer-1) detect dental caries
2) identify bone loss in early stages
3) locate abnormalities
4) evaluate growth & development
5) provide info during procedures (endo)
6) document a patients condition at a specific time
The dental x-ray machine has three primary components. What are they and list first the one is said to
be the heart of the generating system? - Answer-1) the tube head (the heart)
2) the extension arm
3) the control panel
The _________ and __________ must be used on ALL patients for ALL exposures. - Answer-The lead
apron and thyroid collar
List the three rules of radiation protection. - Answer-1) never stand in the direct line of primary beam
2) always stand behind a lead barrier, or thick drywall
, 3) stand right angle of beam and never stand closer than 6ft
Define radiopaque and give some examples of what would appear as radiopaque on a radiograph. -
Answer-radiopaque is structures that appear white and gray on radiograph
example) mental, enamel, dense areas
What is electromagnetic radiation made up of and how fast does it travel? - Answer-photons that travel
through space at the speed of light in a straight line in one motion.
There are three types of radiation, list them with a short definition. - Answer-1) primary: x ray beam
that came from the target of the tube
2) secondary: x radiation created when primary beam interacts with matter
3) scatter: x-ray beam deflects it's path
Density is DIRECTLY controlled by what? - Answer-milliamperage (mA) and exposure time
Describe low contrast and state if it is generally preferred or not preferred. - Answer-many shades of
gray and generally preferred
Define quality assurance and what it would practically include in a dental office. - Answer-is a way of
ensuring that everything possible is being done to produce high quality diagnostic images. it includes
control tests, keeping schedule of maintenance, and record keeping logs.
The steps of processing with the correct purpose. - Answer-1) developing- first step in processing
2) rinsing- removes the developer
3) fixing- hardens the film
4) washing- follows fixation
5) drying- final step in processing
