PHOTOELECTRIC PLETHYSMOGRAPH FOR MEASUREMENT OF CUTANEOUS BLOOD-FLOW
PHOTOELECTRIC PLETHYSMOGRAPH FOR MEASUREMENT OF CUTANEOUS BLOOD-FLOW
复制标题
DOI：
10.1088/0031-9155/19/3/003
复制
发表时间：
1974-01-01
影响因子：
3.5
通讯作者：
RAMSAY, CA
中科院分区：
文献类型：
--
作者：
CHALLONER, AV;RAMSAY, CA
所用的光电探测器是硒化镉光电导电池，并通过应用校正因子来允许电池的温度系数。光电池响应的非线性已被证明是微不足道的。通过使用光纤光导大大减少了光源对皮肤的加热，并且通过红外滤光器将对血红蛋白氧合变化记录的影响保持在最小。该仪器已被证明是敏感的，无创伤的，适用于几乎任何皮肤区域。血流量的定量测量是不可能的，但是当研究中的皮肤区域与相邻的对照区域进行比较时，容易获得流量变化的准确比较测量。
The photodetector used is a cadmium selenide photoconductive cell and allowance is made for the temperature coefficient of the cell by applying a correction factor. Nonlinearity of the photocell response has been shown to be of negligible importance. Heating of the skin by the light source is greatly reduced by the use of fibre optic light guides and the influence on the recording of changes in oxygenation of haemoglobin is kept to a minimum by an infrared filter. The instrument has been shown to be sensitive, atraumatic and applicable to almost any skin area. Quantitative measurements of blood flow are not possible but accurate comparative measurements of changes in flow are easily obtained when the area of skin under study is compared with an adjacent control area.