Go to course page Use of SGRT in SBRT: Can We Possibly Reduce Margin Expansion and Treatment-Related Toxicity? Dr J Heinzerling, MD, Southeast Radiation Oncology Group, USA Further reading and information: Heinzerling et al, Use of surface-guided radiation therapy in combination with IGRT for setup and intrafraction motion monitoring during stereotactic body radiation therapy treatments of the lung and abdomen. Click here for the original & unedited presentation