A dual-wavelength 532/1064 nm optoacoustic (OA) imaging system allows 3D visualizations of arteriovenous anastomoses (AVAs) with an acoustic spatial resolution (50 m) at depths of up to 2 mm in vivo in rabbit ears. Both structural and spectral information from the OA data are employed to analyze the anatomical locations of the blood vessels and to distinguish between veins and arteries in the zone of their confluence. The OA monitoring of a rabbit ear under temperature-induced (43 C/15 C) shunting demonstrated the potential of the technique for the monitoring of functional arteriovenous anastomosis.

中文翻译：

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三维双波长光声血管造影显示动静脉吻合

双波长532/1064 nm光声（OA）成像系统可实现动静脉吻合（AVA）的3D可视化，并具有声学空间分辨率（50 m）在兔子耳朵体内的最深2毫米处。OA数据中的结构信息和光谱信息均用于分析血管的解剖位置，并在其汇合区域中区分静脉和动脉。在温度引起的（43 C / 15 C）分流下对兔耳进行OA监测证明了该技术在监测功能性动静脉吻合中的潜力。