Stack #2672029
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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The purpose of the barcode label is to match the image information with the: | show 🗑
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Computers operate using a ______ language | show 🗑
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show | Light
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show | The light from the phosphor following laser excitation of the reader assembly
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show | All pixel values
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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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The phosphor layer is made of the phosphors from the _____ family | show 🗑
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The layer of the imaging plate that traps electrons during exposure is the _____ layer | show 🗑
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The active element in a storage phosphor is | show 🗑
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CR acquires an image through: | show 🗑
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show | True
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The number of trapped electrons is proportional to the | show 🗑
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show | Insufficient light
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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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Resolution is controlled by ____ size | show 🗑
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show | No change
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show | 8hours with 25% of image lost
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show | True
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Histograms are graphs of the number of pixels in the entire image or part of the image having the same gray levels | show 🗑
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The LUT is used to distinguish all the different contrasts of an image | show 🗑
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1MR=2000 Ideal EI # is 1700-2300 Increase by 300, double exposure | show 🗑
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1MR= 200 Ideal is100-400 Double #, double exposure | show 🗑
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The emission of a bluish purple light is when | show 🗑
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show | Latent
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show | High resolution IPS
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Have a thick phosphor layer, absorbs more radiation, have faster speeds High speeds= low resolution | show 🗑
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show | Phosphor layer
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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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Luminescence | show 🗑
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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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Kilovoltage peak should be chosen: | show 🗑
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show | Laser scanning a PSP plate
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show | Latent image
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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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show | optical system
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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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an eight bit word is called a | show 🗑
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show | binary machine language
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which layer used in the indirect flat panel digital detector is usually either cesium iodide or gadolinium oxysulfide? | show 🗑
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show | the use of a reusable receptor
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show | pixel size
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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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show | modulation transfer function
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show | brightness
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the exposure indicator number is an | show 🗑
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show | bit
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the best signal to noise ratio is | show 🗑
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show | photoconductor
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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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show | sensing area
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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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show | apple a predetermined scale of contrast to digital data sets
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_______ deals with the efficiency of a detector to convert the radiation signal at its entrance window into useful image signal | show 🗑
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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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the window width controls | show 🗑
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an MTF of ___ represents a perfect transfer of spatial and contrast information | show 🗑
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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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what does X-ray exposure of the PSP IP create | show 🗑
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the layers of a flat panel indirect capture detector include | show 🗑
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show | DQE
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the window width | show 🗑
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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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given the negative feedback due to underexposures, what does a predictable and unfortunate use of higher exposures result in | show 🗑
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show | bit depth
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show | true
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computerized digital images consists of a ____ of picture elements, each with a video display value or gray shade | show 🗑
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show | digital radiography
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show | false
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show | true
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saturation and ALARA violations are the primary reasons to use appropriate exposure level | show 🗑
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show | true
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show | selenium
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Larger matrix= smaller pixels=improved sharpness | show 🗑
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show | true
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When the quality of a digital detector is inspected for purchase, the preferred detector for purchase would have | show 🗑
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increasing the KVP increases the number of X-ray that X-ray tube emits | show 🗑
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show | false
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show | fill factor
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show | true
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a compton scatter interaction takes place between an X-ray and an outer shell electron | show 🗑
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show | false
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show | true
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CR systems acquire clinical info by | show 🗑
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show | true
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Created by:
sabv