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46 Cards in this Set
- Front
- Back
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What the abbrev HIS stand for?
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Hospital information system
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What is RIS?
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Radiology information system
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This ensures that modalities can communicate with each other.
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DICOM
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Specific part of DICOM that can communicate with existing imaging veiwing devices that is called the......
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the conformance statment of DICOM
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THE CONNECT DEVICE THAT CAN BRING 2 OR MORE NETWORKS THAT SPEAK THE SAME LANG
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The bridge
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The most fragile type of network connection is...........
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Fiberoptic
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The cable consisting of a center conducting wire surrounded by installation in a grounded shield of braided wire........
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coaxial cable
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What is a server?
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Manages resources for other computers
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Two or more objects sharing resources and information of computers, terminals, and servers interconnected by communication channels is what?
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All of above: 1)a computer network 2)a wide area network and 3) a local area network
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The higher the resolution, the less information can be displayed on the moniter.....
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False
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The basic picture element is known as........
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pixel
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How much more storage capacity does a DVD have over a CD?
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7 times as much
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A collection of connectors sticking out the back of the PC.................
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ports
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Memory is measured in what?
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Bytes
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RAM is ________ memory.
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Temporary
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The series of connections, controllers, & chips that make up the information highway
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BUS
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CPU
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Microprocessor on a motherboard
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How many bytes are needed to store one alpha-numeric character?
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One
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How bits make up 4 bytes?
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32
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Binary code is a computer language based on _______.
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1's and 0's
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DICOM is a standard that allows imaging modalities and PACS to communicate in the same language.
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True
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A lookup table maps ______?
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Image grayscale values
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Another name for exposure latitude is _____.
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Dynamic range
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The ______ converts x-ray energy directly to a digital electrical signal.
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Photo conductor
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X-ray energy related to direct capture DR will stimulate a _______ which is eventually converted to an electical signal.
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scintillator
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Which best describes the sequence for image acquisition using computed radiography?
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Phospher plate, focus laser light scanner, photo-multiplier, analog-digital converter, & review station.
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In reference to CR, to release the latent image, which is scanned over the phospher plate?
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Focus laser light
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The active element in a storage phospher is called _____.
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Barium fluorohalide
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Compared to the 90 sec. processing time found in conventional film radiography, image acquisition DR is reduced to _____ secs?
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3-5
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The x-ray absorber typically used in direct capture DR is a ______?
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Photoconductor
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The two elements needed to convert light signals into electrical signals while using indirect capture DR are TFT and _____?
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Photodiodes
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Indirect capture DR converts absorbed x-ray energy visible light.
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True
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Like CR, DR can use existing diagnostic equipment found in todays imaging departments.
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False
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In a digital radiography system (DR), which are needed to produce a radiographic image?
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X-ray absorber & CCD (charge coupled device)
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When switching from a conventional diagnostic radiography room to one that incorporates CR, major equipment changes are to be expected.
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False
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CR acquires an image through _______.
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the use of a storage phospher plate
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Teleradiography incorporated _______ to produce radiographic images.
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Telephone lines
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PACS was developed by ____.
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US military
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In which decade was MRI introduced?
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1980's
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The first commercial CT scanners could only image the _____?
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head
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Early (something) of raw computed tomography data took a few ______ to make a recognizable image.
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days
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Who was the first to incorporate digital imaging with the CT scanner?
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Godfry Hounsfield
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The latest modality to incorporate digital imaging with image acquisition is ____.
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mammography
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Which modality was the first to use principle of digital images?
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CT
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Light exposing the film is in direct proportion to the amount of energy at the (?) photon on the screen.
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True
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What does an intensifying screen do?
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Emits light & brightens image.
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