charts, compensations, formulas, applications
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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What are the 4 primary exposure factors? | show 🗑
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What does each control | show 🗑
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show | Ma x time =Mas
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show |
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when ever you see distance its what? | show 🗑
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show | A decimal
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show | Cr/dr -histogram
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Purpose of technique charts | show 🗑
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show | at CR level
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show | Mas remains constant. Kvp values according to part thickness. List baseline kv and use +2 kv per cm
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show | variable contrast
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What are the advantages of a variable kvp chart | show 🗑
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Fixed kvp chart | show 🗑
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show |
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Advantage of a fixed kvp chart | show 🗑
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Disadvantage of a fixed kvp chart | show 🗑
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show | Fixed kvp chart because we can lower our mas
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show | Phantoms, calipers, calculator, objective/subjective- Bt, Std & high contrast
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When using a variable kvp chart what must be down in order to select kv | show 🗑
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show | infants 0-2 use 1/4 0f mas
pre school 2-6 use 1/2 of mas
school 6-12 use 3/4 of mas
teens >12 no change
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show | plaster- dry is easier to penetrate
2 x mas or increase 10 kv
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show | plaster- wet is harder to penetrate
3 x mas or increase 15 kv
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show | increase 5 kv
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beam restriction: rules of thumb when collimating | show 🗑
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show | indirectly
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show | quantity and density
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show | motion and recorded detail
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show | ma x t = mas ma1= t2
ma2 t1
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show | based upon isl (what is law and formula)
mas1=(sid1)2 if no time just use ma
mas2 (sid2)2 if no ma just use time
DISTANCE IS ALWAYS SQUARED IN FORMULAS
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show | direct relationship
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technique conversion formulas | show 🗑
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show | incr. 15%= 1/2 mas (50%)
decr. 15%= 2 x mas (100%)
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Created by:
eckoultd1972
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