Primary Exposure Factors
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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| show | *ma *kVp *time *SID
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| mA x time= | show 🗑
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| what is the k shell binding energy for bone | show 🗑
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| what does mA control | show 🗑
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| show | quality/penetration/speed/contrast
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| what is the purpose of technique charts | show 🗑
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| what are the two types of technique charts | show 🗑
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| show | *mAs remains constant
*kV varies according to part thickness
*lists baseline kV and uses + or - 2 kV per cm
*allows you to lower pt. dose
*disadvantage is; with more kVp contrast is lowered
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| what happens with a fixed kVp chart | show 🗑
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| no amount of _______ can make up for inadequate _______ | show 🗑
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| show | *phantoms
*calipers
*calculator
*objective v. subjective
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| show | *infants(0-2 yrs)-use 1/4 of mAs
*preschool(2-6 yrs)-use 1/2 of mAs
*school age(6-12 yrs)-use 3/4 of mAs
*teens (>12)-no change
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| show | *dry plaster cast-2x mAs or +10 kVp
*wet plaster cast-3x mAs or +15 kVp
*fiberglass cast- +5 kVp
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| what are the rules for technique change when collimating | show 🗑
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| what does time control | show 🗑
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| what is the mAs formula | show 🗑
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| what is the mAs distance formula | show 🗑
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| what is the 15% kVp rule | show 🗑
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| what is the inverse square law | show 🗑
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| what are the magnification formulas | show 🗑
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| what are the grid conversions for mAs | show 🗑
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| show | *5:1-- +8-10 *6:1-- +11-12 *8:1-- +13-15 *10 or 12:1-- +20-25 *16:1-- +30-40
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| how do you calculate screen conversion | show 🗑
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| what is the PE formula | show 🗑
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| what are the two types of xray equipment we use in relation to xray current | show 🗑
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| what is the advantage of 3 phase equipment | show 🗑
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| show | 3 phases of alternating current, rectifiers eliminate negative current allowing more output
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Created by:
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