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首页> 外文会议>Advanced Biomedical and Clinical Diagnostic and Surgical Guidance Systems XIII >Tissue identification during Pneumoperitoneum in laparoscopy
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Tissue identification during Pneumoperitoneum in laparoscopy

机译：腹腔镜下气腹过程中的组织鉴定

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Pneumoperitoneum is the beginning procedure of laparoscopy to enlarge the abdominal cavity in order to allow the surgical instruments to insert for surgical purpose. However, the insertion of Veress needle is a blind fashion that could cause blood vessels or visceral injury without attention and results in undetectable internal bleeding. Seriously it may cause a life-threatened complication. We have developed a method that can monitor the tissue reflective spectrum, which can be used for tissue discrimination, in real time during the puncture of the Veress needle. The system includes a modified Veress needle which containes an optical bundle, a light spectrum analyzing and control unit. Therefore, the tissue reflective spectrum can be vivid observed and analyzed through the fiber optical technology during the procedure of the Veress needle insertion. In this study, we have measured the reflective spectra of various porcine abdominal tissues. The features of their spectra were analyzed and characterized to build up the data base and create an algorithm for tissue discrimination in laparoscopy. The results showed that the correlation coefficient (r) of the reflective spectrum can be 0.79-0.95 for the wavelength range of 350.1000 nm and 0.85-0.98 for the wavelength range of 350-650 run in the same tissue of various samples which were obtained from different days. An alternative way for tissue discrimination is achieved through a decision making tree according to the characteristics of tissue spectrum. For single blind test the success rate is nearly 100%. It seems that both the algorithms mentioned above for tissue discrimination are all very promising. Therefore, these algorithms will be applied to in vivo study in animal in the near future.
机译：气腹是腹腔镜检查扩大腹腔以允许手术器械插入以进行手术的起始程序。但是，Veress针的插入是一种盲目方式，可能会导致血管或内脏受伤，而不会引起注意，并导致无法检测到的内部出血。严重地，它可能会危及生命。我们已经开发出一种方法，该方法可以在穿刺Veress针时实时监测可用于组织识别的组织反射光谱。该系统包括一个改良的Veress针，该针包含一个光纤束，一个光谱分析和控制单元。因此，在Veress针头插入过程中，可以通过光纤技术生动地观察和分析组织反射光谱。在这项研究中，我们测量了各种猪腹部组织的反射光谱。分析并表征了它们的光谱特征，以建立数据库并创建腹腔镜组织识别算法。结果表明，在不同样品的同一组织中运行的反射光谱的相关系数（r）在350.1000 nm波长范围内可以为0.79-0.95，在350-650 nm波长范围内可以为0.85-0.98。不同的日子。根据组织频谱的特征，通过决策树可以实现组织识别的另一种方法。对于单盲测试，成功率接近100％。似乎上述两种用于组织识别的算法都非常有前途。因此，这些算法将在不久的将来应用于动物体内研究。

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