Method for analyzing an event such as a surgical intervention on a blood vessel

摘要

A method of analyzing an event comprises the steps consisting in: gathering at least one series of measurements of a physical phenomenon associated with the event or likely to be associated therewith; from a predetermined mother wavelet Psi and for at least one value of a predetermined parameter a, determining: the partition function Z(q,a) such that: $Z\left(q,a\right)=\sum _{b_i}{T_{\mathrm{Psi}}\left[s\right]\left(b_i,a\right)}^q$ where: s is a signal representing variation in the measurements of the series as a function of a variable; T_Psi[s](b,a)=1/a∫ Psi((x-b)/a)s(x)dx where Psi is the complex conjugate of the function Psi(x) in an orthonormal base; and {(b_i,a_i is the set of local maxima in T as a function of a; the spectrum of the function tau(q) such that: Z(q,a)≈a^tau(q) in the limit a-> 0 ⁺; the spectrum of the function D(h) such that: $D\left(h\right)=\underset{q}{\min }\left(\mathrm{qh}-\mathrm{tau}\left(q\right)\right)$ and an index I(a) depending on said spectrum, which index is calculated by means of a predetermined formula; and comparing the index I(a) or an average of indices I(a) with a predetermined threshold.