Exam (elaborations)
RAD 400 TEST 1 QUESTIONS AND ANSWERS
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RAD 400 TEST 1 QUESTIONS AND ANSWERS
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Name: Score:46 Multiple choice questions
Term 1 of 46
Increase energy, hotspot?
Increase
Decrease
increases
(Decrease TAR)
Decreases
Term 2 of 46
Increase field size, PDD?
decreases
Increase
Decrease
Increase
(Increase TAR)
Term 3 of 46
Increase energy, PDD?
Increase SSD = increase PDD
increases
(Decrease TAR)
Increase
Decrease
,Term 4 of 46
Tray factor increases, MU?
Dose w/ wedge / Dose w/out wedge
ALWAYS < 1
decreases
Increase
Decrease
Term 5 of 46
Increase SDD, penumbra?
Decrease
Decreases
increase
Increase SSD = increase PDD
Term 6 of 46
wedge factor, ____ Mu?
Decrease
Increase
Decreases
Dose w/ wedge / Dose w/out wedge
ALWAYS < 1
,Term 7 of 46
Use wedge when tumor size
0-7 cm deep
Increase
decreases
More scatter
Term 8 of 46
Increase thickness, uniformity?
increase
Decrease
Increase SSD = increase PDD
Decreases
Term 9 of 46
Increase SSD = ________ PDD
Increase SSD = increase PDD
Increase
(Increase TAR)
increase
increases
(Decrease TAR)
, Term 10 of 46
Wedge angle
angle of the isodose line at a 10 cm depth at central axis
Steep gradient
Rapidly changing
2 cm away from block edge
Together
Both heels where they overlap/ shallow
CTV + margin that accounts for tumor motion
Term 11 of 46
MU=
50% idodose line
GD/ (ScxSpxWF)
50% isodose line
More scatter
Term 12 of 46
Increase energy, MU?
Decrease
increases
(Decrease TAR)
Decreases
Increase
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