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首页> 美国政府科技报告 >Implementation of Noninvasive Flow Velocimetry Through Monte Carlo Simulation.
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Implementation of Noninvasive Flow Velocimetry Through Monte Carlo Simulation.

机译：通过蒙特卡罗模拟实现无创流速测量。

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摘要

One of the most important mechanisms for maintaining the life of human beings is the human circulation system. This research focuses on a noninvasive technique that maintains high resolution and high precision of measuring photon in the blood stream. We hope to obtain important biomedical parameters valuable for pathological diagnosis. In phase I, a noninvasive optical flow velocimetry is implemented for detecting the human circulation system under the skin surface. The sonrce of the incidence photon is He-Ne laser. The signal is transmitted and detected via a Y-type optical fiber. Optical heterodyning is used to measure the frequency difference between the reflection wave and the original incidence laser wave. Then numerical simulation using Monte Carlo was used in the analysis to verify the result. In phase II, after a velocimetry specification was decided, it was modeled, tested and verified using Monte Carlo simulation. Then the apparatus were set up as directed in the model. The performance of this velocimetry is satisfaction and acceptable. This method of implementing a velocimetry is simple, convenience and fast. Thus, no prior clinical experiment is needed. Moreover, the best reading for the reflected wave is 45 degrees plus/minus 2.35 degrees. This is a realtime and continuous detecting blood flow velocimetry. We find that this is a reliable tool for doctors when doing clinical diagnosis.

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