Stack #2672029
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| show | Imaging plate
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| Computers operate using a ______ language | show 🗑
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| PSP Imaging plates are erased by flooding the plate with: | show 🗑
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| show | The light from the phosphor following laser excitation of the reader assembly
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| A histogram displays the useful signal by locating | show 🗑
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| The digital detector used in CR Imaging is the | show 🗑
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| Grossly overexposed digital images will demonstrate | show 🗑
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| show | Barium fluorohalide
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| show | Active
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| The active element in a storage phosphor is | show 🗑
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| show | The use of a storage phosphor plate
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| In the past, gas lasers such as a helium-neon laser were used, however, current CR readers use solid state laser diodes that emit a red laser beam having wavelengths of about 670-690nm | show 🗑
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| show | Absorbed radiation
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| Quantum mottle is caused by | show 🗑
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| Exposure latitude is to conventional radiography as ____ is to DR | show 🗑
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| show | Exposure to the IP of 1mR
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| show | Pixel
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| When changing exposure technique from 9 mAs to 18mAs using CR, the radiographer should expect | show 🗑
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| âFadingâ occurred after | show 🗑
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| show | True
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| show | True
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| show | True
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| 1MR=2000 Ideal EI # is 1700-2300 Increase by 300, double exposure | show 🗑
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| show | S value
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| The emission of a bluish purple light is when | show 🗑
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| When the electron is in the F Center it is at this point when the electrons are spatially distributed and create a _____ image | show 🗑
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| Have thinner layers of phosphor, provide sharper images, used when small detail is critical Slower speed= high resolution | show 🗑
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| Have a thick phosphor layer, absorbs more radiation, have faster speeds High speeds= low resolution | show 🗑
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| Most important layer within the imaging plate | show 🗑
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| Halide can be | show 🗑
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| Image plate phosphor layer contains Europium within matrix but is not active | show 🗑
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| show | Emission of light by a substance not resulting from heat
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| show | Immediate emission of light
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| Phosphorescence | show 🗑
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| show | Photostimulated luminescence
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| show | Image acquisition
Image plate scanning and then erasure
Image processing
Image display
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| show | Exposure
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| show | Penetration
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| CR systems acquire clinical info by | show 🗑
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| Photostimulable phosphors have the property of creating and storing a _____ when exposed to X-rays | show 🗑
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| Computed radiography is also referred to as | show 🗑
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| DICOM is a standard that allows imaging modalities and PACS to communicate the same language | show 🗑
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| For digital imaging systems, the spatial resolution depends on the size of the ____________________ in the matrix. | show 🗑
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| Which of the following reduces the output image from the scintillator phosphor to the size of the CCD array? | show 🗑
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| ____ produce(s) lateral spreading of light, which destroys the spatial resolution of the image. | show 🗑
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| show | spatial resolution
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| show | byte
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| show | binary machine language
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| show | xray scintillator
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| DR is characterized by | show 🗑
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| in digital imaging the limiting factor in spatial resolution is the | show 🗑
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| ______ is a photoconductor that conducts electrons when struck by light or X-ray photons | show 🗑
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| when matrix size is increased and pixel size goes down, | show 🗑
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| _______ is a complex mathematical function that measures the ability of the detector to transfer its spatial resolution characteristics to the image | show 🗑
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| show | brightness
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| show | indication of radiation absorbed by the imaging plate
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| each binary number is called a | show 🗑
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| show | more signal then noise
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| while flat panel indirect detectors use a photodiode, direct detectors use | show 🗑
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| computerized digital images consist of a _____ of picture elements, each with a video display value or gray shade | show 🗑
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| show | a graphic representation of X-ray exposure
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| ______ will detect the light from the cesium iodide scintillator in the indirect flat panel TFT detector | show 🗑
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| a common feature between indirect and direct DR technology is | show 🗑
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| show | both over and under exposure
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| the purpose of a LUT is to | show 🗑
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| show | DQE
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| with indirect flat panel TFT digital detectors, what is used to first convert X-ray photons into light photons? | show 🗑
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| show | image contrast
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| show | 1
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| grossly overexposed digital images will demonstrate | show 🗑
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| if the digital FOV is 1024 and the display matrix is 256 the pixel size would be | show 🗑
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| show | data acquisition
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| show | latent image
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| show | scintillator phosphor, photodiode, TFT array
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| show | DQE
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| show | decreases contrast and increases grays
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| which image quality descriptor of a digital image is related to the size of the pixels in the image matrix | show 🗑
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| show | dose creep
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| _____ is the max range of pixel value a computer, display monitor, or other digital device can store | show 🗑
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| a digital image can be described with respect to several characteristics or fundamental parameters, including the matrix, pixels, voxels, and bit depth | show 🗑
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| show | matrix
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| the term ____ as used in this book, refers to projection radiography, whereby computers process data collected from patients using special electronic detectors that have replaced the X-ray film cassette | show 🗑
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| show | false
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| show | true
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| show | true
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| the most intense aspect of an X-ray beam is located on the cathode side | show 🗑
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| show | selenium
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| show | true
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| the LUT is selected by the operator when a procedure is entered at the console | show 🗑
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| show | DQE of 68% and MTF of .80
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| increasing the KVP increases the number of X-ray that X-ray tube emits | show 🗑
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| doubling your distance from the radiation source cuts your radiation exposure in half | show 🗑
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| the percentage of a detector elements area dedicated to photon absorption | show 🗑
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| show | true
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| show | true
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| reducing KVP using a grid and increasing collimation all reduce the production of scattered radiation | show 🗑
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| show | true
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| show | laser scanning a PSP plate
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| show | true
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