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47 Cards in this Set
- Front
- Back
Tungsten Target
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A focal spot in the anode.
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Atom
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The basic unit of matter.
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Central Ray
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X-rays at the center of the beam.
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Energy
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The ability to do work.
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Dose (of radiation)
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The amount of energy absorbed by tissues.
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Photon
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A minute (tiny) bundle of pure energy that has no weight or mass.
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Contrast
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Difference in degrees of blackness on a radiograph.
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Cathode
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The negative electrode in the x-ray tube.
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Kilovoltage
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Highest voltage of radiograph tube used during a radiograph exposure.
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Lead Apron
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Device used to protect the reproductive and blood-forming tissues from scatter radiation.
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X-Radiation
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High-energy ionizing electromagnetic radiation.
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Thyroid Collar
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A flexible lead shield that is placed securely around the neck.
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Magnification
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The proportional enlargement of a radiographic image.
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Master Switch, Indicator Light, Selector Buttons, Exposure Button
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Components of control panel.
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Density
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The overall darkness or blackness of a radiograph.
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Anode
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The positive electrode in the x-ray tube.
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Electron
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A negatively charged particle in the atom.
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Ion
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An electrically charged particle.
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Penumbra
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The blurred or indistinct area that surrounds an image.
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Radiology
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The science or study of radiation as used in medicine.
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Primary Radiation
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Same as primary beam.
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Somatic Effects
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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.
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Matter
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Anything that occupies space and has a form or shape.
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Primary Beam
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The most penetrating beam produced at the target of the anode.
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Radiograph
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Image produced on photosensitive film by exposing the film to radiation and then processing it.
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Ionizing Radiation
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Radiation that produces ionization, resulting in harmful effects.
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ALARA Concept
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Concept of radiation protection that states that all exposures should be kept "as low as reasonably achievable".
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Extension Arm
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Flexible arm that is attached to the x-ray tubehead.
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Radiation
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Forms of waves of energy emission through space or material.
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Tubehead
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The part of the x-ray unit that contains the x-ray tube, the high-voltage and low-voltage transformers, and insulating oil.
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Genetic Effects
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Effects of radiation that are passed on to future generations through genetic cells.
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Distortion
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Change in the size of an image on a radiograph caused by incorrect vertical angulation.
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Control Panel
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The portion of the x-ray unit that contains the master switch, the indicator light, the selector buttons, and the exposure button.
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Dental Radiography
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The process of making radiograph of the teeth and adjacent structures by exposure to radiographs.
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Ionization
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Process by which electrons are removed from atoms, causing the harmful effects of radiation to humans.
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Milliampere
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One one-thousands (1/1000) of an ampere, a unit of measurement used to describe the intensity of an electrical current.
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Sharpness
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A measure of how well the radiograph reproduces the fine details or outlines of an object.
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Secondary Radiation
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X-radiation that is created when the primary beam interacts with matter.
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Scatter Radiation
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A form of secondary radiation that occurs when an x-ray beam has been deflected from its path by interactions with matter.
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Bremsstrahlung Radiation
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"Breaking radiation." The sudden deceleration of electrons as they interact with highly positively charged nuclei.
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Digital Imaging
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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.
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Dosimeter
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A device used to detect and measure an accumulated dosage of radiation.
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Image
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Film-based or digitally produced recordings of anatomical structures.
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Image Receptor
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A recording medium for an image, normally film.
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Latent Period
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Time between exposure to ionizing radiation and appearance of symptoms.
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Radiation Monitoring Badge
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A device that contains a film packet used to detect and measure radiation exposure of personnel.
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Sensor
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A solid-state image receptor that contains a silicon chip with an electric circuit.
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