Dosimetric Studies of a mMLC for Intensity Modulated Radiation Surgery for Irregular Lesions

In this work we present the commissioning of a micro Multileaf Collimator (mMLC) of the NovalisTM Intensity Modulated Radiation Surgery (IMRS) system. This system can deliver conventional stereotactic radiosurgery, conformal arcs and beams, and IMRS. The last modalities are performed using the mMLC. In this work the dosimetric characteristics of the mMLC such as transmission across the leaves, penumbra and IMRS pattern verification are presented.