Course book Advanced Treatment Planning 2018

Planning constraints

• For an uncommon (challenging) case, there may be no experience Objective ▪ If set too low allows computer (planner) to accept plan less good than is really possible ▪ If set too high then effectively fails to guide the plan Constraint ▪ If set too low, then drives the plan away from optimal solution ▪ If this is a normal tissue constraint then typically drives down dose in PTV ▪ If too high then may not protect normal tissue ➢ ➢