Density/contrast/detail
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| show | when the xray beam attenuates matter
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| When is scatter not produced? | show 🗑
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| show | Coherent Scattering, Compton Effect, Photoelectric effect
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| What is secondary radiation? | show 🗑
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| show | tabletop, IR or any other matter in the radiation field.
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| show | Thompson scatter
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| When does Coherent scattering take place | show 🗑
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| show | between 40 - 125 kVp
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| what is the compton effect? | show 🗑
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| show | when x-rays or photons are traveling towards the tube instead of away from it
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| As the kVp is increased, Compton interactions are ...? | show 🗑
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| What kind of radiation is the photoelectric effect similar to? | show 🗑
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| With the photoelectric effect photons are interacting with what, instead of the tungsten? | show 🗑
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| show | an x-ray photon interacts with an inner orbital electron
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| The majority of radiation interactions with the body are what type of effect? | show 🗑
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| As the kVp is increased, photoelectric interactions are ...? | show 🗑
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| What is Fog? | show 🗑
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| show | overall blackness on your film/density
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| Scatter creates fog that reduces what? | show 🗑
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| these 4 things affect scatter and fog.. | show 🗑
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| the denser the body part, the ..? the scatter. | show 🗑
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| What is the main source of scatter? | show 🗑
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| show | A grid
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| When is a grid used? | show 🗑
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| Grids are usually held together by a radiolucent inter-spacing material which is? | show 🗑
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| What is radiation that is passed through the body to the IR called? | show 🗑
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| What is grid ratio? | show 🗑
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| what is a general purpose/chest xray grid ratio? | show 🗑
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| show | the number of lead strips per square inch, 60-196
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| show | a moving grid
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| show | Grid cutoff
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| When does grid cutoff happen? | show 🗑
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| show | because it is more difficult to get alignment exactly right bedside
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| show | x-ray of a very small area of the subject.
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| What two ways does decreasing the kVp increase the contrast? | show 🗑
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| What manual technical factors are considered when using an exposure chart? | show 🗑
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| show | True.
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| show | below = 2 above=3
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| What is quantum mottle? | show 🗑
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| show | 30%
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| show | Increase kVp by 15% (10 kVp) and divide mAs by 2
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| show | volume of tissue
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| Fixer solution does what? | show 🗑
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| show | mA time kVp and distance
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| mAs is what to contrast? | show 🗑
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| show | half density
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| show | increase it by 15%
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| show | increase kVp
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| show | intensity of radiation at a given distance from the point source is inverse
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| show | when you see MR, I, R... whenever you are dealing with intensity
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| when do you use mAs distance formula? | show 🗑
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| when do you use the rule of thumb? and what is it? | show 🗑
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| What 5 factors can affect density? | show 🗑
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| show | when you can change the mA and the S but still maintain the same mAs
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| show | base, adhesive, emulsion, super coat
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| a preservative in the developer does what? | show 🗑
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| Exposed silver bromide has what electrical charge? | show 🗑
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| show | limits developer to only exposed silver halide crystals
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| show | preservative
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| what temp does the dryer dry the film? | show 🗑
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| what part of the intensifying screen emits light? | show 🗑
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| show | is more efficient, 1200 times faster
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| show | to absorb back scatter
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| a sensitometry checks what? | show 🗑
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| show | 3-4 feet from the work bench
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| what is quantum mottle? | show 🗑
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| show | uneven density
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| when you increase the developer time, temp, and/or replenishment rate, what happens to the density? | show 🗑
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| What is the practical application of the inverse square law formula? | show 🗑
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| small focal spot gives you what? | show 🗑
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| in manual processing, if the developer temp is up, what should happen to the developing time? | show 🗑
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| what controls the processing time? | show 🗑
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| show | majors by 10, minors by 2
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| show | 60-70 degrees at 40-60% humidity
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| The amount of silver hilide crystals that are exposed determine what on your film? | show 🗑
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| show | absorption with scatter
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| show | contrast, small scale= high contrast
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| show | 25-300
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| the higher the scree speed the ..? mAs you need | show 🗑
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| generally when you use a grid you need ... times the mAs | show 🗑
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| what occurs when phosphors absorb radiation and produce light? | show 🗑
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| show | Joseph Niepce
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| where do the photons come from? | show 🗑
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| the sensitivity speak is made of what? | show 🗑
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| show | the amount of blackness on your film
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| show | exhausted fixer
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| high contrast is considered to be more consistent in radiographic quality? t/f? | show 🗑
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| show | False, it's measured by the height and the width
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| show | Image quality factors
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| small focal spot is usually how many mm? Large focal spot? | show 🗑
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| show | focal spot
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| When OID decreases, penumbra... | show 🗑
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| what is the digital phrase for recorded detail, density and what controls contrast? | show 🗑
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| show | Unequal magnification
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| show | OID SID focal spot size
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| Air gap technique gives you as much clean up as what? And is done with a ... inch air gap | show 🗑
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| Films will show low contrast if the developer is set too ....? | show 🗑
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| High contrast... 4 things about it | show 🗑
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| show | Many shades of gray, decreased contrast, high kVp, long scale
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| What is the purpose of contrast? | show 🗑
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| What are the 3 types of contrast? | show 🗑
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| show | more
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| the primary cause of fog is ? | show 🗑
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| When you increase the kVp by 10 you .... or else you are doubling your density | show 🗑
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| show | 17x17
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| What types of grids movements are there? | show 🗑
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| how do you calculate grid ration and grid frequency? | show 🗑
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| show | increase
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| Radius refers to the alignment of the focusing of the lead strips to the diverging primary beam t/f? | show 🗑
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| show | Half Layer Value, amount of absorbing material that will reduce the density by 1/2
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| show | Absorbs the characteristic photon of the previous filter .
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| show | True
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