IMRT

Single Arc techniques (Very) fast delivery in single rotation of the gantry

During gantry rotation the dose is delivered while varying

 MLC leave positions and  dose rate and/or  gantry rotation speed

Different optimization/sequencing algorithms  Sweeping window arc therapy (SWAT)  Arc-modulated cone beam threapy (AMCBT)  Volumetric-modulated arc therapy (VMAT)  RapidArc TM  Arc-modulated radiation therapy (AMRT)