Reuter R, Luig H, Carstens B, Wesselhoeft H
Nuklearmedizin. 1980 Dec;19(6):278-82.
Radioisotopic time-activity curves can be described by a function known from the physics of heat conduction. This function, called in this paper "tracer function", is a special solution of one-dimensional differential equation of heat conduction. The function is especially useful in the quantitation of left-to-right cardiac shunts by analysis of the pulmonary time-activity curve. The first transit curve is determined from the amplitudes on the ascending slope of the curve only including the maximum. The shunt curve analysis uses two parameters derived from the first transit curve and then the position and amplitude of the shunt curve maximum only.
放射性同位素时间-活度曲线可用热传导物理学中已知的一个函数来描述。本文将此函数称为“示踪剂函数”，它是一维热传导微分方程的一个特殊解。该函数在通过分析肺时间-活度曲线对左向右心脏分流进行定量分析时特别有用。首次通过曲线仅根据曲线上升斜率上包括最大值在内的振幅来确定。分流曲线分析使用从首次通过曲线得出的两个参数，然后仅使用分流曲线最大值的位置和振幅。
