摘要
肝脏储备功能可以反映肝脏潜力的大小,对于需要切除肝叶的肝癌患者,术前评估其肝脏储备功能具有重要的指导作用。为了提高当前肝脏储备功能检测仪器的抗震性和精确度,本文在人体动脉脉动的基础上考虑了静脉脉动以及组织脉动的微小影响,并借鉴了在脉搏血氧仪原理中已经得到很大发展的脉搏分光光度法,设计并实现了一款具有良好稳定性的肝脏储备功能检测系统。该系统以S3C6410芯片为核心,采用OPT101光电传感器采集透过手指的三波长光源的透射光强,在嵌入式Linux系统下通过ADC驱动采集模拟信号,并使用QT creator进行界面开发和数值模拟。试验结果表明,该系统信号可靠、稳定、操作简便。
Aiming at the problem of CT image is different before and during in computer aided liver operation correction in space, we come up with a correction method based on ICP algorithm, screening out the best three-dimensional transformation by geometric hashing methods, then use these translation to effect the whole point clouds, completing the point cloud splitting, to make the result more accurate. The results of simulation and experimental show, The accuracy of improved ICP algorithm is higher, which is suitable for computer aided liver operation.
出处
《科技通报》
北大核心
2016年第3期43-46,69,共5页
Bulletin of Science and Technology
基金
国家重大科学仪器设备开发专项项目(2012YQ160203)
