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Photoacoustic imaging by using a bundle of thin hollow-optical fibers

机译:使用一束薄的中空光纤进行光声成像

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We propose a photoacoustic imaging system composed of a flexible bundle of thin hollow-optical fibers that enables endoscopic diagnosis. The hollow-fiber bundle involves 37 fibers with an inner diameter of 100 μm and the total diameter of the bundle is 1.2 mm. A laser beam for photoacoustic excitation is scanned at the input end of fiber bundle and therefore, no scanning mechanism is necessary at the distal end. In addition, owing to the small numerical aperture of hollow optical fibers, a high resolution image is obtained without using a micro-lens array at the end. By using the fiber bundle probe, photoacoustic imaging of blood vessels in the ovarian membrane of fish were successfully obtained with a laser fluence of around 2.8 mJ/cm~2.
机译:我们提出了一种光声成像系统,该系统由可弯曲的中空细纤维束组成,可实现内窥镜诊断。中空纤维束包括37根内径为100μm的纤维,并且束的总直径为1.2mm。在光纤束的输入端扫描用于光声激发的激光束,因此,在远端不需要扫描机构。另外,由于中空光纤的数值孔径小,因此无需在末端使用微透镜阵列即可获得高分辨率图像。通过使用光纤束探针,以大约2.8 mJ / cm〜2的激光能量密度成功地获得了鱼卵巢膜中血管的光声成像。

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