Wallgren C G
Acta Paediatr Scand Suppl. 1975(254):12-4. doi: 10.1111/j.1651-2227.1975.tb15007.x.
Onehundred and six dye curves recorded by earpiece densitometry in shunt-free children were analysed with respect to the spatial relationships between the forward triangle and the area under the total primary dye curve. It is suggested that the relationship between these two areas, the forward triangle factor, should be 0.32 for studies in children with the use of dichromatic earpiece densitometry.
对106例未分流儿童通过听筒密度测定法记录的染料曲线，分析了前向三角形与总初级染料曲线下面积之间的空间关系。结果表明，对于使用双色听筒密度测定法的儿童研究，这两个面积之间的关系即前向三角形因子应为0.32。
