Week 1 (Mod 2)
Which films are used to examine the crowns of both maxillary and mandibular teeth on one film?
BWX
The amount of radiation exposure an individual receives varies on:
Film speed
Radiation protection for the patient would include
Lead apron
What type of radiation can be controlled and eliminated?
Leakage radiation
The amount of electrons needed to produce a diagnostic film is referred to as:
Milliamperage
The beam of radiation which is responsible for exposing the xray film is the:
Primary radiation
the traditional unit for measuring xray exposure in air is termed a
REM
What is considered radiation protection for the operator during patient exposure?
Stand a distance of 6-8 ft from primary beam
Weak radiation leaving the tube during exposure is prevented by use of a/an:
aluminum filter
An atom that has lost an electron is called
an ion
Interproximal, or cavity detecting radiographs are
bitewings
What is the negatively charged particle that is responsible for producing dental radiographs?
electrons
Radiation is considered harmful because it
is cumulative
The speed of electrons through a circuit is referred to as:
kilovoltage
An incorrect horizontal angle of the PID causes:
overlapping
Use of faster speed x-ray film would help to protect the patient from exposure by allowing the operator to ___________ the exposure time.
shorten/decrease
The purpose of the fixer is to:
stop the action of the developer
The cathode is:
the negative terminal
the part of the x-ray machine that produces radiation is:
vacuum tube
what is the occupational dose limits for radiation exposure in a calendar quarter (13 weeks) for the whole body?
1.25 REMS
A full mouth x-ray survey on an edentulous patient consists of:
14 PA's only
A full-mouth xray survey includes:
18 films (14 pa's 4 bitewings)
Which film size is known as the standard film?
2
The minimum allowable distance of the dark room safety light from the working counter top is
4 ft
What item of the xray unit restricts the radiation beam to 2.75" at the end of the cone?
Collimator
Radiation injuries that are not seen in the person irradiated but that occur in future generations are termed:
Genetic
`Reticulation on a film is a processing error caused by excessive
Heat
How does the temperature of the processing solutions affect the x-ray fim?
It causes the films to develop slower or faster.
Dosimetor badges should be worn at wasit level when exposing x-ray receptors. True or False?
True
Besides Gamma rays, what additional radiation wave from the EMR spectrum is considered harmful to tissue due to its wavelength?
UV
