Design and Experimental Evaluation of a 256-Channel Dual-Frequency Ultrasound Phased-Array System for Transcranial Blood-Brain Barrier Opening and Brain Drug Delivery. - Hao-Li Liu; Chen-Kai Jan; Po-Chun Chu; Jhong-Cing Hong; Pei-Yun Lee; Jyh-Duen Hsu; Chung-Chih Lin; Chiung-Ying Huang; Pin-Yuan Chen; Kuo-Chen Wei (IEEE Trans. Biomed. Eng., 2014)