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Exposure Unit 1 Exam

QuestionAnswer
mAs has an (indirect/direct/none) effect on receptor exposure direct
mAs has an (indirect/direct/none) effect on contrast no effect
mAs has an (indirect/direct/none) effect on spatial resolution no effect
mAs has an (indirect/direct/none) effect on distortion no effect
kVp has an (indirect/direct/none) effect on receptor exposure direct
kVp has an (indirect/direct/none) effect on contrast indirect
kVp has an (indirect/direct/none) effect on spatial resolution no effect
kVp has an (indirect/direct/none) effect on distortion no effect
SID has an (indirect/direct/none) effect on spatial resolution direct
SID has an (indirect/direct/none) effect on receptor exposure indirect
SID has an (indirect/direct/none) effect on distortion indirect
SID has an (indirect/direct/none) effect on contrast no effect
OID has an (indirect/direct/none) effect on distortion direct
OID has an (indirect/direct/none) effect on contrast direct
OID has an (indirect/direct/none) effect on receptor exposure indirect
OID has an (indirect/direct/none) effect on spatial resolution indirect
focal spot size has an (indirect/direct/none) effect on spatial resolution indirect
focal spot size has an (indirect/direct/none) effect on receptor exposure no effect
focal spot size has an (indirect/direct/none) effect on contrast no effect
focal spot size has an (indirect/direct/none) effect on distortion no effect
grid ratio has an (indirect/direct/none) effect on contrast direct
grid ratio has an (indirect/direct/none) effect on receptor exposure indirect
grid ratio has an (indirect/direct/none) effect on spatial resolution no effect
grid ratio has an (indirect/direct/none) effect on distortion no effect
grid ratio formula old mAs/new mAs=from/to
what is grid ratio the true effectiveness of a grid
collimation has an (indirect/direct/none) effect on contrast direct
collimation has an (indirect/direct/none) effect on receptor exposure indirect
collimation has an (indirect/direct/none) effect on spatial resolution no effect
collimation has an (indirect/direct/none) effect on distortion no effect
filtration has an (indirect/direct/none) effect on receptor exposure indirect
filtration has an (indirect/direct/none) effect on contrast indirect
filtration has an (indirect/direct/none) effect on spatial resolution no effect
filtration has an (indirect/direct/none) effect on distortion no effect
motion has an (indirect/direct/none) effect on spatial resolution indirect
motion has an (indirect/direct/none) effect on receptor exposure no effect
motion has an (indirect/direct/none) effect on contrast no effect
motion has an (indirect/direct/none) effect on distortion no effect
anode heel effect has an (indirect/direct/none) effect on receptor exposure indirect
anode heel effect has an (indirect/direct/none) effect on contrast no effect
anode heel effect has an (indirect/direct/none) effect on spatial resolution no effect
anode heel effect has an (indirect/direct/none) effect on distortion no effect
tube angle has an (indirect/direct/none) effect on distortion direct
tube angle has an (indirect/direct/none) effect on spatial resolution indirect
tube angle has an (indirect/direct/none) effect on receptor exposure no effect
tube angle has an (indirect/direct/none) effect on contrast no effect
how many cm is in an inch 1 inch = 2.54 cm
4 cm rule for every 4 cm change in part thickness adjust the technique by a factor of 2 (kVp by 15% or double mAs)
15% rule CHANGE BOTH KVP AND MAS
sthenic body habitus healthy, strong/active
hyposthenic body habitus thin
asthenic body habitus overly thin, skinny
hypersthenic body habitus large/ obsese
x-ray absorption in tissues is due to what thickness and atomic number
most radipaque to most radiolucent metals, bone, muscle, soft tissues/liquid, fat, gases
are positive contrast agents radiolucent or radiopaque radiopaque
are negative contrast agents radiolucent or radiopaque raiolucent
atomic number of iodine 53
atomic number of barium 56
additive diseases increase _____________ of tissue radiopacity
destructive diseases increase _____________ of tissue radiolucency
increase overall technique by ___% for additive diseases in advanced stage 50%
ascites fluid in abdomen, increase mAs 50-75%
osteopetrosis abnormally dense bone, increase kVp 8-12%
cardiomegaly abnormally enlarged heart, increase mAs 50%
fibrous carcinomas rare growth of tissue cells, increase mAs 50%
pulmonary edema fluid in lungs, increase mAs 50%
hemothorax blood in pleural space, increase kVp 8%
decrease mAs by ___% or kVp by ___% for destructive diseases in advanced stage 35% for mAs and 8% for kVp
destructive diseases increase gas or fat, or decrease normal fluid or bone within a tissue
additive diseases increase fluid, bone, or metal content within tissue
aseptic necrosis bone eating away, decrease kVp 8%
osteomyelitis bone infection causing erosion, decrease kVp by 8%
osteoporosis deterioration of bone, decrease kVp by 8%
pneumothorax air in lung cavity, decrease kVp by 8%
technique adjustment for postmortem radiography and why 35-50% increase for the head, ribs/thorax, or abdomen due to pooling of fluids
what is soft tissue technique used for demonstration of slivers of wood or glass or swallowed bones
what is the soft tissue technique adjustment decrease kVp by 20%
Created by: user-2033286
 

 



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