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14 Cards in this Set
- Front
- Back
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Image intensifiers do what to PT dose?
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lower it
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Image intensifier converts x-ray energy into?
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light energy
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Compared to general x-ray tubes, Fluoro tubes operate at a lower/higher mA?
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lower
(typical fluoro operates at .5-5mA and general x-ray operates at 50-500) |
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The source to skin distance for a fixed and mobile unit are?
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fixed: 15 inches
mobile: 12 inches |
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The input screen absorbs x-ray photons and emits what?
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light photons
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The photocathode absorbs light photons and emits what?
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electrons
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The out put screen does what?
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absorbs electrons and emits light photons
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The input screen is generally made of what?
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cesium iodide
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The input screen in convex or concave?
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concave
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The photocathode is made of what?
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cesium autimony
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The output phosphor is made of what?
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zinc cadmium
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precise location where photoelectrons cross?
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focal point
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What is changed when you use mag mode?
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the focal point
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flux gain X minification gain=
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total brightness gain
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