Radiology week 2
When discussing film processing, the term Reduction refers to:
A chemical reaction where the halide portion of the exposed silver halide crystals are removed
What preparations can be done before washing hands and donning gloves when taking radiographs?
Adjusting the patient chair and asking the patient to remove their glasses
Weak radiation leaving the tube during exposure is prevented by the use of a/an:
Aluminum Filter
An ion is:
An atom that has lost electrions
Which of following is used to sterilize beam alignment devices?
Autoclave
Which of the following is considered a semi-critical instrument?
Beam Alignment Device
Which of the following is an indication for hand washing?
Before leaving the dental operatory Only when hands are visibly soiled Before donning gloves and immediately following glove removal Correct! BOTH A & C!!!!!
In dentistry, only products that are registered with the ______ as hospital disinfectants with tuberculocidal claims should be used to disinfect treatment areas.
EPA
What is the negatively charged particle that is responsible for producing radiographs?
Electron
What area(s) of the treatment room should be covered with a plastic barrier to reduce chance of disease transmission when taking radiographs?
Exposure Button Tube Head Head Rest Correct! ALL OF THE ABOVE
The dental assistant should wear gloves when transporting exposed films to the processing room.
False
What type of radiation can be prevented and eliminated?
Leakage Radiation
The cathode is the:
Negative Terminal
The purpose of the fixing agent is to:
Remove all unexposed and undeveloped silver halide crystals from the film emulsion
The beam of radiation which is responsible for exposing the x-ray film is the:
Secondary
The term used to describe the process that inactivates all forms of microbial life including bacterial spores, viruses, bacteria, and fungi:
Sterilization
How is pathogen transmission reduced when using a digital receptor to take a radiograph?
The use of a disposable plastic barrier
If the dental radiographer is interrupted and must leave the room during exposure of radiographs:
They must remove gloves and wash their hands before leaving the room. Then wash hands and don gloves upon returning to the room.
Which of the following describes the use of a filter in a dental tube head?
To remove low energy x-rays
After a patient has been dismissed, dental unit surfaces and counter tops that may have been contaminated should be cleaned with an EPA-registered ______________________________.
intermediate- level disinfectant
The optimum temperature for development is:
68 Degrees F
The correct steps in manual film processing are:
Development, Rinsing, Fixing, Washing, Drying
In order to be effective, the safelight must be ___ above the working surface.
4 Feet
The leaded-glass housing of the vacuum tube prevents x-rays from escaping. There is a window in the leaded-glass that allows x-rays travel toward the PID.
Both statements are true
All contaminated items must be disposed of
Following local and state environment regulations While still wearing gloves in the presence of the patient Correct! ALL OF THE ABOVE!!!!
What component of the tube head prevents overheating by absorbing the heat that is created when x-rays are produced?
Insulating Oil
What component of the vacuum tube produces the electrons that are needed to create x-ray beams?
Tungsten Filament
Besides gamma rays, what additional radiation wave from the EMR spectrum is considered harmful to tissue due to its wavelength?
Ultra-violet
The part of the x-ray machine that produces the radiation is the:
Vacuum Tube
After removing an exposed film from the patient's mouth, the first thing you should do is:
Wipe saliva from the film