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35 Cards in this Set
- Front
- Back
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A radioactive material can emit this.
Large particle accelerators used to study matter can create this. The biggest creator of this is the universe. |
Gamma rays
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When a neutral atom or molecule has a charge induced.
Either lost of gained an electron This can induce a change in human DNA (Ca+2, Na+, C1-) |
Ionizing radiation
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This comes from your radio, stars and gasses.
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Radio waves.
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Cooks your popcorn. And used by astronomers to learn the structure of nearby galaxies.
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Microwave/radar
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Our skin emits this and in space it shows between he stars
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Inferred light
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Our eyes can see this, even can be made from fireflies.
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visable lights
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The sun is a source of this because it causes our skin to burn. Other hot things in space emit this too.
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Ultraviolet light
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Your doctor uses this to look at your bones. Hot gasses in the universe also use this.
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xrays.
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A disturbance in space which is both a wave and a discrete photon.
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Electromagnetic radiation.
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Can only move in straight lines
Can interact with solid things, bounce and change directions Subject to resistance gravity |
Electromagnetic radiation.
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If a electromagnetic radiation is in a vacuums it will...
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Will continue on until infinity.
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During radiographs the radiation will interact with skin and bones and change direction, this is called
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scatter radiation.
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What is an anode and a cathode?
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A anode is the side of the tube with a positive charge.
A cathode is the negative side of the cube. |
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This is found on the cathode.
Energy flows through the filament and electrons are liberated from the filament. Electrons have a negative charge and the negative charge of the cathode will repel electrons and push them away. |
Tungsten filament
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Electrons have a negative charge and the positive charge of the anode will attract electrons and push them away.
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Tungsten fillament
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Refers tot he amount of potential energy in Electromagnetic radiation.
The quality of radiation and how readily a electromagnetic radiation will penetrate through a substance. |
Kilovoltage potential.
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Method of setting how much energy is being sent through the tungsten filament.
Quantity of radiation produced and how readily a electromagnetic radiation will lead to more photons being produced. |
Millamperage
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TRUE OR FALSE!
Dense areas of the body require less photons. |
false
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TRUE OR FALSE!
For photons to pass through the body of a thick animal we need higher kvp values then a thin animal. |
true
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TRUE OR FALSE!
Time can adjust the time of lower kvp levels. |
true
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TRUE OR FALSE!
There is no specific angle to take radiographs at, just as long as it hits the table. |
False.,
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Ionizing radiation from the x-ray machine will interact with the crystals in this intensifying screen converting ionizing radiation into visual lgiht.
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Cassette
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How much percent of the image is a result of the light created by the cassette.
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95%
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The calcium tungstate phosphor crystal of the cassette emit a blue light, good absorption by lacks light conversion efficiency and...
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they tend to be a large and can produce grainy image.
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Rare earth phosphors of cassettes emit a green light, have great light conversion and...
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tend to produce a better image due to small crystal size.
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Who do the radiographs belong to?
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the doctor.
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Radiographs must have...
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hospital name and address
patient owners name date |
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What are good qualities of a good film?
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Optimal density
correct scale of contrast excellent detail |
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What is subject density?
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the density of what your radiographing
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What is radiographic density?
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The degree of darkness of blackness on the film.
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TRUE OR FALSE!
The less photons the darker the film. |
false
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Positive contrast medium absorbed most radiation and appear white.
What chemicals are used for this? |
Barium and iodine
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Barium is used for...
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looking at the GI tract
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Some negative contrast mediums are...
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oxogen
nitrogen gasses |
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Tissues of special interest for saftey.
dermal tissues thyroid eyes |
lymph nodes
bone marrow gonads. |
