Measurement of optical path length for cerebral near-infrared spectroscopy in newborn infants.
Measurement of optical path length for cerebral near-infrared spectroscopy in newborn infants.
复制标题
新生儿脑近红外光谱光路长度的测量。
DOI：
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发表时间：
1990
影响因子：
2.9
通讯作者：
E. Reynolds
中科院分区：
文献类型：
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作者：
J. Wyatt;M. Cope;D. Delpy;P. Zee;S. Arridge;A. Edwards;E. Reynolds
在6名早产儿死亡后测量了极短的近红外激光脉冲穿过其头部所需的时间。获得的值用于计算差分路径长度因子（DPF），其定义为光子行进的平均距离除以光进入和离开头部的点之间的距离。发现DPF为4.39 +/-0.28。这个因素的知识将允许准确的定量测量，以近红外光谱的一系列指数的脑氧合和血流动力学在活婴儿。
The time taken for an extremely short pulse of near-infrared laser light to traverse the heads of 6 preterm infants was measured after death. The values obtained were used to calculate a differential path length factor (DPF), defined as the mean distance travelled by the photons divided by the distance between the points where light entered and left the head. The DPF was found to be 4.39 +/- 0.28. Knowledge of this factor will permit accurate quantitative measurements to be made by near-infrared spectroscopy of a range of indices of cerebral oxygenation and haemodynamics in live infants.