Liu Jian-Hung, Wei Chen-Wei, Sheu Yae-Lin, Tasi Yu-Tsung, Wang Yu-Hsin, Li Pai-Chi
Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan.
Ultrason Imaging. 2008 Oct;30(4):217-27. doi: 10.1177/016173460803000403.
Combining photoacoustic and ultrasonic imaging allows both optical and acoustic properties to be displayed simultaneously. In this paper, we describe a dual-band transducer for implementing such a multimodality imaging setup. The transducer exhibits two frequency bands so that it matches the frequency of interest in both imaging methods. An optical fiber is included in the center so that it is inherently coregistered. The transducer was fabricated from lithium niobate and comprises two concentric rings whose center frequencies are 4.9 MHz and 14.8 MHz. Pulse-echo measurements and phantom imaging were performed to demonstrate its performance characteristics.
结合光声成像和超声成像能够同时显示光学和声学特性。在本文中，我们描述了一种用于实现这种多模态成像设置的双波段换能器。该换能器具有两个频段，以便与两种成像方法中感兴趣的频率相匹配。中心包含一根光纤，从而实现其固有配准。该换能器由铌酸锂制成，包括两个同心环，其中心频率分别为4.9兆赫兹和14.8兆赫兹。进行了脉冲回波测量和体模成像以展示其性能特征。
