Do you ever offer spine SBRT for patients with multiple adjacent involved vertebrae?

Yes, multiple spine segments can be treated. NRG 0631 included 2 contiguous spine levels for radiosurgery/SBRT. An earlier study (Ryu et al., PMID 17167762) showed that the spinal cord dose tends to be slightly higher when the length of the target volume is >6cm. This was the basis of including 2 co...