The Scatter Search Based Algorithm for Beam Angle Optimization in Intensity-Modulated Radiation Therapy

Table 2

Objective function parameters for all structures considered for BAO of the prostate case.

VOI	VOI type	Objective function	Penalty	Prescribed dose ]	Mean dose ]	Maximum dose [Gy]
PTV 56	Target	Square deviation	1000	56	- - -	- - -
PTV 68	Target	Square deviation	1000	68	- - -	- - -
Bladder	VOI	Square overdosing	300	- - -	45	- - -
Rectum	VOI	Square overdosing	300	- - - -	45	- - -
Body	VOI	Square overdosing	100	- - -	- - -	70