Course book Advanced Treatment Planning 2018

What is the maximum gantry rotation angle needed to paint all gradients for this target??

The total gantry rotation is the sum of all red angles (counter-clockwise) and all green angles (clockwise).

The maximum gantry rotation angle is 360 degrees plus the sum of all concavities

Courstesy of Markus Alber

The sum of all red angles is 360 degrees.