Pooled across surgeons , intra-ischemic % LDF change ( P = 0.12 ) , neurologic scores ( Assisted vs. Blinded = 146 vs. 137 , P = 0.61 , meanstandard deviation ) and cerebral infarct volume ( 16263mm ( 3 ) vs. 14386mm ( 3 ) , P = 0.24 ) were not different between groups .