IMRT 2018

Tomotherapy Quality Control

• Output is defined by absolute dose/unit time (no MUs) • Profile: transversal and longitudinal • Energy • Dose rate: constancy • y jaws and MLC: alignment and position

Similar to 3D conformal on Linac

4 3 2 1

Fenwick, PMB 49,2004. Quality assurance of a helical tomotherapy machine Langen MedPhys 37, 2010. QA for helical tomotherapy: Report of the AAPM Task Group 148