Week One Radiology for 11/16 Test

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Interproximal, or cavity detecting radiographs are:

BWX (Bitewings)

the traditional unit for measuring x-ray exposure in air is termed a

REM

what item of the X-ray unit restricts the radiation beam to 2.75" at the end of each cone?

a collimator

weak radiation leaving the tube during exposure is prevented by use of an

aluminum filter

an atom that has lost an electron is called

an ion

Which films are used to examine the crowns of both maxillary and mandibular teeth on one film?

bitewing

how does the temperature of the processing Solutions affect the X-ray film?

causes the film to develop slower or faster

radiation is considered harmful because it is:

cumulative

use of a faster speed x-ray film would help to protect the patient from exposure by allowing the operator to ________ the exposure time

decrease

what is the negatively charged particle that is responsible for producing Dental radiographs?

electrons

the amount of radiation exposure an individual receives varies on

film speed

radiation injuries that are not seen in the person irradiated but that occur in future generations are termed

genetic

the speed of electrons through a circuit is referred to as

kilovoltage

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 cathode is the

negative terminal

an incorrect horizontal angle of the PID causes

overlapping

the beam of radiation which is responsible for exposing the X-ray film is the

primary radiation

which film sizes is known as the standard film?

size 2

what is considered radiation protection for the operator during patient exposure

stand a distance of 6 to 8 feet from primary beam

the purpose of the fixer is to

stop the action of the developer

the part of the X-ray machine that produces the radiation is

the vacuum tube

dosimeter badges should be worn at waist 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 the tissue due to its wavelength?

ultraviolet

radiation protection for the patient would include

using the lead apron

what is the occupational dose limit for radiation exposure in a calendar quarter (13 weeks) for the whole body?

1.25 REMS

a full mouth x-ray survey on an endentulous patient consist of:

14 PA's only

a full mouth x-ray survey includes

18 films (14 PA's and 4 Bitewings)

the minimum allowable distance of the darkroom safety light from the working countertop is

4 feet

Reticulation on a film is a processing error caused by excessive:

Heat


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