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WorksheetsRadiology Key Terms
Total questions: 49
Worksheet time: 25mins
Concept of radiation protection that states that all exposures should be kept "as low as reasonably achievable."
Intensity
Quantity
ALARA
Quality
An electrically charged particle.
electron
Ion
energy
photon
The positive electrode in the x-ray tube.
anode
cathode
electron
central ray
The basic unit of matter.
ion
electron
energy
atom
The total energy of the x-ray beam.
Energy
Intensity
Quality
Quantity
"Braking radiation" The sudden deceleration of electrons as they interact with highly positive charged nuclei. The primary type of radiation produced in the dental xray tube head.
Bremsstrahlung radiation
Primary radiation
secondary radiation
scatter radiation
The negative electrode in the x-ray tube.
electron
anode
cathode
ion
X-rays at the center of the beam.
primary beam
central ray
radiation
energy
A recording medium for an image, normally film, phosphor storage plate, or a digital sensor.
digital imaging
Image receptor
sensor
film
High energy ionizing electromagnetic radiation.
primary radiation
Ionizing radiation
X-radiation
scatter radiation
Anything that occupies space and has form or shape.
Photon
Matter
Energy
Atom
Forms of waves of energy emission through space or material.
Radiation
Radiology
Radiograph
Dosimeter
A form of secondary radiation that occurs when an x-ray beam as been deflected from its path by interaction with matter.
primary radiation
secondary radiation
scatter radiation
radiation
A solid-state image sensor that contains a silicon chip with an electric circuit.
Film
Image receptor
Sensor
Image
A measure of how well an image reproduces the fine details or outline of an object.
Quality
Quantity
Intensity
Sharpness
x-radiation that is created when the primary beam interacts with matter.
Secondary Radiation
Primary Radiation
Scatter Radiation
Radiation
Image produced on a photosensitive film by exposing the film radiation and then processing it.
Sensor
Radiology
Radiograph
Image
The science or study of radiation as used in medicine.
Radiology
X-Radiation
Radiography
Radiation
The mean of energy or penetrating ability of the x-ray beam.
Matter
Radiation
Quantity
Quality
The number of x-rays produced in the dental unity.
Quantity
Quality
Radiation
X-Ray
The overall darkness or blackness of an image.
Sharpness
Density
Magnification
Quality
Differences in degrees of blackness on an image.
Sharpness
Contrast
Magnification
Distortion
The portion of the x-ray unit that contains the master switch, the indicator light, the selector buttons, and the exposure buttons.
Control Panel
Extension Arm
Tubehead
Position Indicator Device
The ability to do work.
Matter
Energy
Atom
Ion
The process of recording images of the teeth and adjacent structures by exposure to x-radiation.
Image
Dental radiography
Radiation
Radiography
A device used to detect and measure an accumulated dosage of radiation.
Dosimeter
Image receptor
Dose
Tungsten Target
A filmless method of capturing an image and displaying it by using an image receptor, an electronic signal, and a computer to process and store the image.
Digital Imaging
Image
x-ray
Film
Change in the size of an image caused by incorrect vertical angulation.
Magnification
Intensity
Distortion
Quality
The amount of energy absorbed by tissues.
dosimeter
intensity
Dose
Image receptor
A negatively charged particle in the atom.
electron
nucleus
atom
ion
Flexible arm that is attached to the x-ray tube head.
extension arm
tube head
control panel
PID
Effects of radiation that are passed on the future generations through genetic cells.
Somatic Effects
Genetic effects
Radiation Effects
Film-based or digitally produced recordings of anatomic structures.
Image
Dose
Ion
Photon
A focal spot for the anode.
Primary beam
Tungsten Target
Tube head
Primary radiation
The part of the x-ray unit that contains the x-ray tube, the high voltage and low voltage transformers, and insulating oil.
Tube head
Control Panel
Extension Arm
PID
A flexible lead shield that is placed securely around the neck.
Lead Apron
Tube head
Thyroid Collar
Effects of radiation that cause illness and are responsible for poor health (such as cancer, leukemia, and cataracts) but are not passed on to offspring.
Genetic Effects
Somatic Effects
Process by which electrons are removed from atoms, causing the harmful effects of radiation in humans.
Radiation
Ionization
Genetic effects
Magnification
Radiation that produces ionization, resulting in harmful effects.
Ionizing Radiation
Scatter Radiation
Secondary Radiation
Primary Radiation
Highest Voltage of x-ray tube used during an exposure.
Radiation
Milliampere
Kilovoltage
Time between exposure to ionizing radiation and appearance of symptoms.
Somatic effects
Latent period
Genetic effects
Device used to protect the reproductive and blood-forming tissues from scatter radiation.
Thyroid collar
Lead Apron
Position Indicator Device
The proportional enlargement of an object.
Magnification
Distortion
Sharpness
Components of the control panel
Master switch, indicator light, selector buttons, exposure button
Extension arm
Tube Head
Position Indicator Device
A minute (tiny) bundle of pure energy that has no weight or mass.
matter
photon
ion
nucleus
The most penetrating beam produced at the target of the anode.
Secondary beam
Primary beam
Penumbra
The blurred or indistinct area that surrounds an image
Distortion
Penumbra
Sharpness
Magnification
One one-thousandth (1/1000) of an ampere; a unit of measurement used to describe the intensity of an electrical current.
Milliampere
Kilovoltage
A device that measures exposure of personnel to ionizing radiation by measuring the intensity of visible light emitted from a crystal in the detector when heated. The intensity of light emitted is dependent upon the radiation exposure.
Dosimeter
Personal radiation monitoring badge
