METHOD FOR ESTIMATING THE CONCENTRATION OF A TRACER IN A TISSUE STRUCTURE ASSEMBLY, AND CORRESPONDING STORAGE MEDIUM AND DEVICE

摘要

The invention relates to a method for estimating the concentration of a tracer in a tissue structure assembly including at least one tissue structure, from a measurement image of the tracer concentration in said tissue structure assembly, which is obtained by an imaging apparatus, wherein said image includes at least one space domain inside which the tracer concentration is homogenous and at least one region of interest in which the tracer concentration is measured. The method includes the following steps: determining a geometric transfer matrix having coefficients representative of the contribution of the space domains in the measurement of the tracer concentration in the regions of interest; optimising the coefficient of the geometric transfer matrix by defining the best regions of interest in terms of errors in order to measure the tracer concentration, the definition of the regions of interest being carried out according to an iterative loop that includes the following steps upon each iteration: modifying the regions of interest, and calculating the coefficients of the geometric transfer matrix from the modified regions of interest; selecting an optimised geometric transfer matrix among the calculated geometric transfer matrices; and estimating the tracer concentration from the optimised geometric transfer matrix.