Gynae BT_Lucknow_2018

Inverse Planning - Beam Modeling

• Dosimetric accuracy of the IMRT plan delivery depends on the accurate representation of

✓ Beam Penumbra – MLC. ✓ transmission and scattering properties of MLC ✓ Output factor for small field size . ✓ Accuracy of dose calculation algorithm . ✓ Approximations of leaf sequence generation algorithm. ✓ Leaf positioning accuracy.