Definition of stereotactic body radiotherapy: principles and practice for the treatment of stage I non-small cell lung cancer

DEGRO working-group statement defining SBRT for stage I NSCLC. It lists the motion-management approaches in routine use — free-breathing delivery with the internal target volume concept (described as the most commonly practiced), the mean target position concept or real-time tracking, and delivery in specific breathing phases by gating or breath hold — and names safety margins for critical organs (the PRV concept), repositioning or replanning as ways to avoid organ overdose. Full text read in Europe PMC (PMC3889283).

The German working group's definition of lung SBRT — including the motion-management options (ITV, mean target position, tracking, gating, breath hold) and the PRV concept for critical organs.