**12. Future directions**

Planning of radiosurgery in meningiomas usually concentrated on the main tumor bulk as overall treatment volume. Lovo et al. recently try to include tumor dural tails of 143 patients with histologically confirmed or radiologically assumed WHO Grade I meningiomas in the radiosurgery treatment plans. All the final prescription isodose line in treatment plans were focused on tumor coverage and measurement of the dose received at maximum distance (MaxDis) of the dural tail and the midpoint distance (MPDis) from the prescription isodose line to the maximum dural tail distance. The dural tail of meningiomas were identified in at least three consecutive sections of the MRI T1-weighted sequence with contrast in 1 mm slice thickness. Tumor control was achieved in 96% of patients [50].
