ARRT registry review covering Image Acquisition and Evaluation content area
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| Refers to clarity or resolution. | Recorded Detail
pg. 296
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| Refers to misrepresentation of the actual size (magnification) or shape (foreshortening or elongation) of the structures imaged. | Distortion
pg. 296
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| Occurs when the x-ray tube is angled. | Elongation
pg. 302
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| Refers to a phosphor's ability to absorb x-ray energy and convert it to fluorescent light energy. | Conversion Efficiency
pg. 311
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| _________ __________ __________ refers to how well a particular phosphor detects the presence of x-ray photons. | Detective quantum efficiency
pg. 311
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| The wavelength, or color, of light emitted must match the particular sensitivity of the film emulsion used is known as ________ _______. | Spectral matching
pg. 311
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| ________ is known as the luminescence from fluoroscopic screen phosphors. | Phosphorescence
pg. 311
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| The lingering luminescence after the termination of x-ray. | Afterglow
pg. 311
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| As phosphor size decreases, screen speed _______. | Decreases
pg. 312
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| Any combination of mA and time will produce an given mAs will produce identical image density. This is called _______ ________. | Reciprocity Law
pg. 318
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| To produce a perceptible change in radiographic density, and change of ___ percent is required. | 30
pg. 319
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| When is a grid recommended? | If the body part is 10 cm or more
pg. 325
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| A grid with lead strip that are angled is called a ______ grid. | Focused
pg. 336
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| The height of the lead strips compared with the distance between them is know as. | Grid Ratio
pg. 328
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| Ascites, pneumonia, atelectasis, and rheumatoid arthritis are considered ___________ pathological conditions. | Additive
pg. 335
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| A three-phase 6-pulse generator has a _____% voltage ripple. | 13
pg. 336
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| The response of the film emulsion to the variety of x-ray photons emerging from the irradiated part. | Film contrast
pg. 342
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| This is know as the ratio between the quantity of primary photons transmitted through the grid and the quantity of scattered photons transmitted. | Selectivity
pg. 350
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| What does the sensitometric/characteristic curve demonstrate? | The degree of film density as a result of exposure.
pg. 353
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| A margin on error one has with a given group of exposure factors. | Exposure Latitude
pg. 355
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| This is 2 dimensional and is know as the picture element. | Pixel
pg. 364
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| This term refers to the photons that have penetrated the part without interaction. | Signal
pg. 364
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| This term refers to Compton scatter and any other form of image-degrading fog. | Noise
pg. 364
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| Unexposed film should be stored at what temperature? | No greater than 70 degrees
pg. 387
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| Unexposed film should be stored is what humidity levels? | Between 40% and 70%
pg. 387
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| This functions to convert the latent image into the manifest image by reducing the exposed silver bromide grains/crystals to black metallic silver. | Developer
pg. 391
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| The developer temperature should be? | 92-95 degrees
pg. 394
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| This is an analysis and graphic representation of all the densities from the PSP screen, demonstrating the quantity of exposure, the number of pixels, and their values. | Histogram
pg. 399
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| Underexposure, incorrect processing algorithm selection, inadequate collimation, and grid cutoff are all causes of ________. | Graininess
pg. 409
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| What type of screen speed be used for extremities? | Slow
pg. 410
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