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Just some of the issues…
o
Placement of centre of brain fields
o
Posterior angulation of lateral fields to spare contralateral lens
o
MLC
vs
custom blocks for shielding
o
High
vs
low junction in the cervical region
o
Use of couch rotation or match line wedge for junction in the cervical
region
o
Use of a gap/feathering of junction in the cervical region
o
Second field
vs
extended SSD for spinal axis