735 / 1542
One arc or more arcs? (coplanar –
non-coplanar
– partial arcs)
•
For most of the commercial planning solutions, no more than 2-
arcs are needed
•
For complex cases, 2-arcs make it easier to connect the apertures
thereby offering the optimizer more freedom, leading to
significantly improved dose conformality and homogeneity
•
Pushing the
quality
of the treatment plan decreases
monitor
unit efficiency
and increases
treatment time
VMAT - Planning vs Deliverability