Estimation of intraoperative brain shift by combination of stereovision and doppler ultrasound: phantom and animal model study. - Amrollah Mohammadi; Alireza Ahmadian; Amir Darbandi Azar; Ahmad Darban Sheykh; Faramarz Amiri; Javad Alirezaie (Int. J. Comput. Assist. Radiol. Surg., 2015)