:)
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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| Define computer. | Any general purpose, stored-program electronic digital computer.
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| Define hardware. | Parts of the computer you can touch.
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| Define software. | Programs.
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| What does MODEM stand for? | Modulator/Demodulator
Digital-->Analog
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| RAM | Random Access Memory
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| ROM | Read Only Memory
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| RIS | Radiology Info. System
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| HIS | Hospital Info. System
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| PACS | Picture Archiving and Communication System
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| DICOM | Digital Imaging Communication
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| Bit | Binary digit "0 or 1"
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| Byte | Eight bits
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| Pixel | Picture element
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| Modern day computers use ___ to store info. | Silicon chips
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| The ___ is an example of computer input hardware. | mouse
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| In computerized medical imaging equipment, such as CT scanners, the computers use ___ processing. | real-time
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| T/F Computed radiography cassettes and film/screen cassettes can be used interchangeably with any x-ray imaging system. | True
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| Computed radiography screens respond to radiation with ____. | Photostimulable luminescence
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| A photostimulable phospher in a metastable state will emit light ... | immediately, when stimulated by light, over time
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| The computed radiography cassette is called a(n).. | imaging plate
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| The photostimulable phospher screen is handled in a .. | reader
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| The computed radiography is made up of ... modules. | mechanical, optical, computer
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| T/F The digital imaging plate can sit for some time after the erase cycle. | False
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| CR and screen-film imaging both have a... | latent image
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| T/F Spatial resolution, contrast resolution, noise, and artifacts are identical in screen-film imaging and CR. | False
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| The principal source of noise in CR is... | scatter radiation
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| With CR the contrast is... | constant regardless of radiation exposure
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| The CR image has __ exposure latitude and __ contrast resolution. | wide/improved
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| Flooding the erased imaging plated with bright light prevents ... | Ghosting
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| In DR, the latent image is formed on the.. | radiation detector
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| In DR, each matrix pixel represents... | atomic number and mass density
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| In DR, the brightness of the image is determined by ... | pixel values
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| In DR, spatial resolution is improved with increased... | matrix size
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| The number of visible shades of gray in a digital image is determined by ... | bit depth
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| The dynamic range determines the degree of __ in the image. | contrast resolution
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| Spatial resolution is determined by the ratio of __ to __. | field of view / matrix size
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| CR uses a ___ for latent image formation. | Photostimulable phosphor
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Created by:
laboba16
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