Is there a concern for using FFF beams in single isocenter multi target lung SBRT?

Fun, if forgotten, factoid: in the early Indiana University experience, Bob Timmerman and Lech Papiez designed milled compensators for the purpose of steepening the dose gradient across the profile of the beam. The basic idea was to emulate the steep gradients of GammaKnife beams for the purpose of ...

With the help of our physics faculty, here are our thoughts.

I wouldn't say it is wrong to treat these cases with a single isocenter, but at some point, you start to lose many of the advantages of it, particularly when the lesions are widely separated. As a general rule, if the jaw opening is exceed...