test
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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| who invented fluoro & when? | Thomas Edison-1896
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| what are the 4 parts of a fluoro unit | II, tube, monitor, carriage(assembly)
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| what is the equation for minification gain | minification=input square over output square
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| the photocathode does what? | absorbs light and emits electrons
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| what is an algorithum? | application of complex mathmatical farrahs
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| list 3 types of storages devices | cd/dvd,hard drive,flash drive
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| 3D volume of tissue is called a? | voxel
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| what is the magnification equation for II? | mag=original diameter over new diameter
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| list the 6 quality factor of a digital image | brightness,contrast,resolution,distortion,exposure index,noise
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| controls the range at gray scale of a digital image | window width
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| list 3 output devices monitor | monitor(video),printer,fax
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| A device used to focus electrons in the II | electrostatic lens
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| list 4 CR artifacts | ghost image,dropout artifact,quantum mottle,heat blur
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| digital data can be? | stored on disc,transfered on internet,printed on laser disc system
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| what is the matrix? | total # of pixels
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| what is DICOM? | digital imaging & communication in medicine
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| what is the most common viewing system in fluoro? | real-time video
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| what is the mA range of the fluoro tube? | 0.5-5.0mA
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| what is the equation for spatial resolution? | SR=fov over matrix
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| when were II's invented? | 1948
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| An artifact on a CR image due to imcomplete plate erasure is? | phantom image
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| what is the equation for total brightness gain? | BG=minification gain over flux gain
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| what do th electrostatic lens do in the II? | focus & intensity electrons
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| what does FOV stand for? | field of view
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| study for random access memory & is temporary | RAM
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| what is the exposure index? | # value representation of the exposure valve on the image.
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| list 3 types of input devices | keyboard, mouse, scanner
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| what is the fluoro input phoshpor made of? | CSI(cesium iodide)
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| what is the most common video viewing system in fluoro? | Plumbicon
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| The input screen is-----in shape | concave
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| list 2 types of monitors(viewing devices) | CRT & LCD
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| list the layers of an image plate | protective layer,phosphor layer,conductor layer,support layer,light sheild layer,light backing layer
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| stands for read only memory & is permanant | ROM
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| what type of laser is used to process a digital image. | Helium-Neon laser
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| what is HIS | hospital info. system
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| what is the post processing technique that increases brightness along the edge of a image | edge enchancement
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| This system uses a magnetic field for diagnostic exams. | MRI
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| what is the 2D piece of an image? | pixel
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| what is the kV range of a fluoro tube system? | 25kV
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| what is a single character in binary code called? | BIT
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| controls the level of brightness of the digital image | window level
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| explain luminance vs ambient |
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| explain raster pattern |
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| explain resolution & distortion |
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| explain DR & CR likness & differences |
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