Reuss James L
OB Scientific, Inc, Germantown, WI 53022, USA.
IEEE Trans Biomed Eng. 2005 Feb;52(2):153-9. doi: 10.1109/TBME.2004.840188.
A multilayer tissue description was employed in Monte Carlo simulations of reflectance pulse oximetry to study the impact of assumptions made in previous studies employing homogeneous tissue models. Simulation results with a discrete layer of arterial pulsatility were similar to previous studies employing homogenous tissue models. However, the relationship of normalized pulse amplitude to emitter-detector spacing reiterates that spacing has a significant impact on pulse oximetry function. The effect of melanin content as a thin, superficial absorber was also simulated, with results supporting the general clinical observation that skin shade need not substantially compromise pulse oximeter accuracy.
在反射式脉搏血氧饱和度测定法的蒙特卡罗模拟中采用了多层组织描述，以研究以往采用均匀组织模型的研究中所做假设的影响。具有离散动脉搏动层的模拟结果与以往采用均匀组织模型的研究相似。然而，归一化脉冲幅度与发射器 - 探测器间距的关系再次表明，间距对脉搏血氧测定功能有重大影响。还模拟了黑色素含量作为一种薄的浅表吸收剂的影响，结果支持了一般临床观察结果，即肤色不必对脉搏血氧仪的准确性造成实质性影响。
