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