1Kanno H,Ozawa Y,Sakata K,et al.Intraoperative power Doppler ultrasonography with a contrast - enhancing agent for intracranial tumors.J Neurosurg,2005,102(2) :295 ~ 301.
2Van Velthoven.Intraoperative ultrasound imaging:comparison of pathomorphological findings in US versus CT,MRI and intraoperative findings.Acta Neurochir Suppl,2003,85:95 ~ 99.
3Le Roux PD,Winter TC,Berger MS.A comparison between preoperative magnetic resonance and intraoperative ultrasound tumor volumes and margins.J Clin Ultrasound,1994,22(1) :29 ~ 36.
4Woydt M,Vince GH,Krauss J,et al.New ultrasound techniques and their application in neurosurgical intra - operative sonography.Neurol Res,2001,23(7) :697 ~ 705.