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51 Cards in this Set
- Front
- Back
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Wireless connection, appears automatically in screen |
Digital Radiography |
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Exposure stored in phospher layer
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Computed Radiography |
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From patient to imaging plate |
Direct Radiography |
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Uses cassets
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Film Screen Radiography |
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2 types of intensifying screens |
- Rare Earth Screens - Calcium Tungstate |
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Emits blue light, lesser xray intensity |
Rare Earth Screens |
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Xray are converted into 5 photons of light |
Film Screen Radiography |
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4 types of tanks |
Developer Tank Fixer Tank Wash Tank Dryer System |
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2 Radations important in Xray |
Compton and Photoelectric |
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gas filled radiation |
Ionization Chamber |
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Time for AEC to respond |
1millisecond or .001s |
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Back up timer incase AEC fails to terminate |
Solid State Radation Detectors |
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Advantage of AEC |
Achieve consistent xray film density |
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Disadvantage of AEC |
-prone to operator error - prosthetic devices causes over exposure to image receptor |
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It is used for manual changing of xray film so that it can eat up valuable time |
Automatic Cassette Changer |
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It is used for manual changing of xray film so that it can eat up valuable time |
Automatic Cassette Changer |
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Standard for imaging the movement of contrast agent on vessels |
Cinefluoro Unit |
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It shows movement of body parts of contrast agents through the body |
Photofluoroscopy |
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Capturing image on teeth |
Dental Xray Units |
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Enhanced visualization of borders between images of different densities between fats, muscle and bones |
Xeroradiography |
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Usually used in diagnosing osteoporosis |
Bone densitometer |
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Xray exams of breast |
Mammography unit |
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Diagnostic imagine of specific layer of tissue |
Conventional Tomography Unit |
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It is used for manual changing of xray film so that it can eat up valuable time |
Automatic Cassette Changer |
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Standard for imaging the movement of contrast agent on vessels |
Cinefluoro Unit |
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It shows movement of body parts of contrast agents through the body |
Photofluoroscopy |
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Capturing image on teeth |
Dental Xray Units |
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Enhanced visualization of borders between images of different densities between fats, muscle and bones |
Xeroradiography |
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Usually used in diagnosing osteoporosis |
Bone densitometer |
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Xray exams of breast |
Mammography unit |
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Diagnostic imagine of specific layer of tissue |
Conventional Tomography Unit |
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Visualization of vessels |
Angiography |
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Two main areas of angiography |
Neuroradiology and vascular radiology |
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Site where accelerated electrons interact and produce light |
Output phosphor |
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Ratio of number of light photon at the output phosphor |
Flux gain |
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Increased illumination of image |
Minification gain |
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Ability of image intensifier to increase the illumination level of image |
Brightness |
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Exclusively used in cardiac catheterization |
Cineradiography |
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Produced behind lead disc that is positioned on the input phosphor |
Veiling glare signal |
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Reduction in brightness |
Vignetting |
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Television camera tube |
Vidicon |
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2 methods to electronically convert visible image in output phosphor |
Thermionic television camera and Charge coupled Device |
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During fluoroscopy, xray tubes is operated at less than |
5mA |
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Allows radiologist to select image brightness level |
Automatic Brightness Control |
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Illumination levels are measured in |
Unit of lumen per square meter or lux |
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Radiographs are visualized under illumination levels of |
100 to 1000 lux |
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It is used to dark adapt for conventional screen fluoroscopy |
Red goggles |
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Electronic device that receives image forming xray beam that converts into visible light image of high intensity |
Image intensifier tube |
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Cesium iodide, energy is converted visible light |
Input phosphor |
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A thin metal usually composed of cesium and antinomy compounds |
Photocathode |
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Electron emission that follows heat stimulation |
Photoemission/Thermionic Emmision |
