What criteria do you use to decide between 1 fraction vs multi-fraction (e.g. 5 fractions) for WHO 1 meningiomas?

This is an important, frequently encountered, and clinically relevant question. I will address it as posed, but intend to emphasize that, although stereotactic radiosurgery (SRS) is an important therapeutic option for WHO grade I meningioma patients requiring RT, it does not displace external beam R...