標題: Optical coherence tomography-guided laser microsurgery for blood coagulation with continuous-wave laser diode
作者: Chang, Feng-Yu
Tsai, Meng-Tsan
Wang, Zu-Yi
Chi, Chun-Kai
Lee, Cheng-Kuang
Yang, Chih-Hsun
Chan, Ming-Che
Lee, Ya-Ju
光電系統研究所
Institute of Photonic System
公開日期: 16-Nov-2015
摘要: Blood coagulation is the clotting and subsequent dissolution of the clot following repair to the damaged tissue. However, inducing blood coagulation is difficult for some patients with homeostasis dysfunction or during surgery. In this study, we proposed a method to develop an integrated system that combines optical coherence tomography (OCT) and laser microsurgery for blood coagulation. Also, an algorithm for positioning of the treatment location from OCT images was developed. With OCT scanning, 2D/3D OCT images and angiography of tissue can be obtained simultaneously, enabling to noninvasively reconstruct the morphological and microvascular structures for real-time monitoring of changes in biological tissues during laser microsurgery. Instead of high-cost pulsed lasers, continuous-wave laser diodes (CW-LDs) with the central wavelengths of 450 nm and 532 nm are used for blood coagulation, corresponding to higher absorption coefficients of oxyhemoglobin and deoxyhemoglobin. Experimental results showed that the location of laser exposure can be accurately controlled with the proposed approach of imaging-based feedback positioning. Moreover, blood coagulation can be efficiently induced by CW-LDs and the coagulation process can be monitored in real-time with OCT. This technology enables to potentially provide accurate positioning for laser microsurgery and control the laser exposure to avoid extra damage by real-time OCT imaging.
URI: http://dx.doi.org/10.1038/srep16739
http://hdl.handle.net/11536/129382
ISSN: 2045-2322
DOI: 10.1038/srep16739
期刊: SCIENTIFIC REPORTS
Volume: 5
起始頁: 0
結束頁: 0
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