blmod_triexp_model: Tri-exponential model for fitting of arterial input functions

In mathesong/kinfitr: Kinetic Modelling of PET Time Activity Curves

Tri-exponential model for fitting of arterial input functions

Description

This is the model itself for the tri-exponential model of AIF decay, in which both the rise and fall are modelled together in the same nonlinear model.

Usage

blmod_triexp_model(time, t0, peaktime, peakval, A, alpha, B, beta, C, gamma)

Arguments

time	Time of each sample.
t0	The delay time. This is the point at which the linear rise begins.
peaktime	The time of the peak.
peakval	The radioactivity value of the peak.
A	The multiplier of the first exponential.
alpha	The rate of the first exponential.
B	The multiplier of the second exponential.
beta	The rate of the second exponential.
C	The multiplier of the third exponential.
gamma	The rate of the third exponential.

Value

Model predictions

Examples

blmod_triexp_model(1:100, 2, 5, 100, 80, 0.5, 15, 0.1, 5, 0.01)

mathesong/kinfitr documentation built on Jan. 15, 2024, 11:07 p.m.