Method for forecasting the contrast medium flow in a living body

摘要

A method is disclosed for forecasting the contrast medium flow in a living body, in particular in a patient, in which a defined test bolus with a contrast medium is injected, preferably intravenously and with a known injection flow profile, into the body, preferably into a blood vessel. The time concentration profile of the contrast medium is observed and determined over a limited time period with a number of measuring instants at at least one location in the body with the aid of a tomographic method. The time profile of the contrast medium concentration of another contrast medium dose is forecast with the aid of a linear cause/effect formulation from the measured data obtained via the distribution of the contrast medium. The following calculation formula is then used for forecasting the time concentration profile {tilde over (c)}R(t) of the contrast medium at at least one of the previously measured locations of the body: ${\tilde{c}}_R\left(t\right)=\frac{1}{F_T}\sum _{n=\mathrm{na}}^{n=\mathrm{ne}}{\int }_{x=\mathrm{xa}}^{x=\mathrm{xe}}d{t}^{\text{'}}{\tilde{c}}_R\left(t+t_{0T}-n{\mathrm{Delta}}_T-t^{\text{'}}\right)b_R^{\text{'}}\left(t^{\text{'}}\right).$