Ch. 13 &15
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Anatomically programmed radiography (APR) | radiographic system that allows the radiographer to select a particular button on the control panel that represents an anatomic area; a preprogrammed set of exposure factors is displayed & selected for us
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| Automatic exposure control (AEC) | a device that uses an ionization chamber to detect the quantity of radition exposing the patient & IR
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| Backup time | the maximum length of time the x-ray exposure will continue when using an automatic exposure control system
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| Bone densitometry | a specialized procedure during ionization radiation to provide info on the condition of the skeletal bones
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| Dedicated units | radiographic units designed for specific imaging procedures
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| Density controls | part of the automatic exposure control device that allows the radiographer to adjust the amount of present radiation detection values
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| Detectors | radiation-measuring devices
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| Focal plane | or object plane. the plane where the area of interest lies, at the level of the fulcrum
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| Fulcrum | or pivot point. the fixed point during the movement of the x-ray tube, which lies within the plane of the anatomic area to be imaged
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| Ionization or ion chamber | a hollow cell that contains air & is connected to the timer circuit via an electrical wire
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| Linear tomographic | an imaging procedure using movement of the x-ray tube & IR in opposing directions to create images of structures in a focal plane by blurring the anatomy located above & below the plane of interest
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| Mammography | specialized radiographic imaging procedure of the breast
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| mAs readout | the actual amount of mAs used for an image is displayed on an automatic exposure control panel immediately after the exposure
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| Minimum response time | - the shortest exposure time that the automatic exposure control (AEC) system can produce
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| Osteoporosis | a bone disease in which the bones become thinner & more porous & therefore susceptible to fx’s
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| Panoramic x-ray (panorex) | unit that is designed to image curved surfaces, typically the mandible & teeth
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| Photodiode | a solid-state device that performs the same function as a photomultiplier tube
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| Photomultiplier (PM) tube | an electronic device that converts visible light energy into electrical energy
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| Phototimer | automatic exposure control detectors that use a fluorescent (light-producing) screen & a device that converts the light to electricity
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| Tomographic angle | the angle or arc created during total movement of the x-ray tube; directly related to the amount of blur created in the image
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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