When planning spine SBRT, do you use volume dose limits to the spinal cord PRV, such as D0.35cc, in addition to maximum point dose?

An excellent recent paper from the MSK group on 3-fraction spinal SBRT (minimum dose of 27 Gy to PTV) was published last year, examining dosimetric predictors of radiation myelopathy. Of note, spinal cord delineation in this study was done using myelogram in 85% of cases, with 15% of cases utilizing...