A calibration standard for laser‐Doppler perfusion measurements
A calibration standard for laser‐Doppler perfusion measurements
复制标题
激光多普勒灌注测量的校准标准
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
R. Maniewski
中科院分区：
文献类型：
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作者：
A. Liebert;M. Leahy;R. Maniewski
本研究的目的是为激光多普勒灌注监测仪开发一种新的校准标准。从乳胶球的溶液进行布朗运动获得的拍频频谱进行了比较，从多孔聚乙烯材料含有相同的解决方案。在后一种情况下，静态和动态散射事件的混合物预期产生与在真实的人体组织中获得的光谱类似的光谱。得到的结果清楚地表明，从常用的运动标准，这是多个多普勒频移和零差混合的结果，和那些从我们的增强模型，主要是从单多普勒频移和外差混合的结果产生的信号之间的差异。
The objective of the present study was the development of a new calibration standard for the laser‐Doppler perfusion monitors. The beat frequency spectrum obtained from a solution of latex spheres undergoing Brownian motion was compared to that obtained from a porous polyethylene material containing the same solution. The mixture of static and dynamic scattering events in the latter case was expected to produce a spectrum similar to that obtained in the real human tissue. The results obtained demonstrate clearly the difference between the signals recorded from the commonly used motility standard which are the result of multiple Doppler shifting and homodyne mixing, and those generated from our enhanced model which predominantly result from single Doppler shifting and heterodyne mixing.