23 February 2010 Design and fabrication of an integrated intravascular ultrasound/photoacoustic scan head
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The combination of intravascular ultrasound and intravascular photoacoustic imaging has been proposed. In this study, we propose a scan head design that is sufficiently small to fit in the tip of the catheter. In addition, the design is also suitable for ultra high frame rate imaging. The scan head consists of a single element, ring-shaped transducer for sideward ultrasound transmission. The transducer has a diameter of 3mm. On acoustic detection, we propose the use of a polymer microring array. For demonstration purposes, a single micro-ring is used with mechanical scanning in this study. For optical illumination, a multimode fiber with a cone-shaped mirror is used. Note that only a single ultrasound/laser pulse is required to acquire an ultrasound/photoacoustic image frame. Phantom imaging results are demonstrated.
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Bao-Yu Hsieh, Bao-Yu Hsieh, Sung-Liang Chen, Sung-Liang Chen, Tao Ling, Tao Ling, L. Jay Guo, L. Jay Guo, Pai-Chi Li, Pai-Chi Li, } "Design and fabrication of an integrated intravascular ultrasound/photoacoustic scan head", Proc. SPIE 7564, Photons Plus Ultrasound: Imaging and Sensing 2010, 756409 (23 February 2010); doi: 10.1117/12.843614; https://doi.org/10.1117/12.843614

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