if scar tissue
wiring
issues w arm allivation
try different setup (vacbag)
if arms arent elevated =tangent will clip arm
documentation =
laterality , pregnancy waver , if patient got surgery on both sides
DIBH =
left side =heart
right side= IMC
CTV=
breast tissue
OAR
heart lungs brachial plexus and spinal cord if SC involvement
beam arrangement
right and left medial fields