RADIOLOGY:Question and Answers
________ will improve the sharpness of radiographic image - anssmaller film crystal size
a good technique for reducing the radiation exposure to both patient and operator is the use of: - ansfast film
or digital imaging
A lead apron and a thyroid collar: - ansMust be used on all patients for all exposures
a patient is concerned with radiation exposure. you can assure him that your office utilizes the ALARA concept.
what does that include? - ansreducing the number of of exposures, minimizing retakes, and keeping exposures
levels as low as possible
a radiograph that has an overall gray appearance is generally preferred. this x-ray is said to have: - anslow
contrast
A step-down transformer is necessary within the x-ray circuitry to: - ansboil off electrons from the filament
A______ is a minute bundle of energy that has no weight or mass - ansphoton
An exposure time of 1/2 second is equal to ____ impulses. - ans30
Anything that occupies space and has a form or shape is: - ansmatter
Because the entire x-ray area is considered a radiation hazard area, a radiation hazard sign must be posted in: -
anssight of patients and sight of personnel
Chronic radiation exposure occurs when ____ doses of radiation is received over a ____ time period. -
anssmall; long
, Damage caused by ionizing x-radiation to genetic cells: - anscan affect future generations
damage to which type of cell is passed on to future generations? - ansgenetic cell
Dental imaging: - ansrefers to film-based images, refers to digitally produced images, and detects conditions
that might otherwise remain undetected.
exposure to radiation: - ansno matter how small, has the potential to cause harmful biologic changes
filtration is used to _______ and are discs made of _______ - ansremove long wavelengths from the beam;
aluminum
Heat is reduced from the target by: - anscopper stem and insulating soil
how much filtration is federally required for a dental x-ray machine operating over 70 kVp? - ans2.50 mm
How well the image reproduces fine detail or distinct outlines of an object is called: - anssharpness
if a patient is small and petite, to get the same density radiograph it is best to reduce the: - ansmA.
If the operator's film badge indicates an exposure to small amounts of radiation, what should be done? -
ansevaluate the x-ray equipment and techniques
If you change the exposure time of the x-ray unit, what is affected? - ansnumber of x-rays produced
in dentistry the _______ the wavelength of the x-rays, the greater their energy and their usefulness. -
ansshorter
________ will improve the sharpness of radiographic image - anssmaller film crystal size
a good technique for reducing the radiation exposure to both patient and operator is the use of: - ansfast film
or digital imaging
A lead apron and a thyroid collar: - ansMust be used on all patients for all exposures
a patient is concerned with radiation exposure. you can assure him that your office utilizes the ALARA concept.
what does that include? - ansreducing the number of of exposures, minimizing retakes, and keeping exposures
levels as low as possible
a radiograph that has an overall gray appearance is generally preferred. this x-ray is said to have: - anslow
contrast
A step-down transformer is necessary within the x-ray circuitry to: - ansboil off electrons from the filament
A______ is a minute bundle of energy that has no weight or mass - ansphoton
An exposure time of 1/2 second is equal to ____ impulses. - ans30
Anything that occupies space and has a form or shape is: - ansmatter
Because the entire x-ray area is considered a radiation hazard area, a radiation hazard sign must be posted in: -
anssight of patients and sight of personnel
Chronic radiation exposure occurs when ____ doses of radiation is received over a ____ time period. -
anssmall; long
, Damage caused by ionizing x-radiation to genetic cells: - anscan affect future generations
damage to which type of cell is passed on to future generations? - ansgenetic cell
Dental imaging: - ansrefers to film-based images, refers to digitally produced images, and detects conditions
that might otherwise remain undetected.
exposure to radiation: - ansno matter how small, has the potential to cause harmful biologic changes
filtration is used to _______ and are discs made of _______ - ansremove long wavelengths from the beam;
aluminum
Heat is reduced from the target by: - anscopper stem and insulating soil
how much filtration is federally required for a dental x-ray machine operating over 70 kVp? - ans2.50 mm
How well the image reproduces fine detail or distinct outlines of an object is called: - anssharpness
if a patient is small and petite, to get the same density radiograph it is best to reduce the: - ansmA.
If the operator's film badge indicates an exposure to small amounts of radiation, what should be done? -
ansevaluate the x-ray equipment and techniques
If you change the exposure time of the x-ray unit, what is affected? - ansnumber of x-rays produced
in dentistry the _______ the wavelength of the x-rays, the greater their energy and their usefulness. -
ansshorter
