Loading patent…
AssigneesCentre National de la Recherche Scientifique (CNRS), Ecole Des Mines De Nantes
InventorJean-Pierre CUSSONNEAU
Estimating the term…
The present disclosure relates to a method for locating a radionuclide emitting positons and having a child core emitting a photon by de-excitation, that includes detecting a radionuclide response line using a positon-emitting tomography camera. According to the disclosure, for each of the arrangements ordered by pairs of first and second interactions of the Compton type detected by a Compton telescope, the method comprises determining the angle between the direction of the incident photon of the first interaction and the geometrical axis connecting the position of the first interaction with the position of the second interaction, determining the half-aperture cones of the angle in which the geometrical surface does not include an intersection with line, selecting at least one cone in which the geometrical surface includes an intersection with line, selecting the radionuclide position from said reconstructed intersection of the response line with the geometrical surface of the selected cone.
A process for locating the position of a radionuclide emitting positons and whereof the child core emits at least one photon by de-excitation, in which
The process as claimed in any one of the preceding claims, characterised in that an examination is made as to whether there is only a single cone (Cmn) selected whereof the surface has a point of intersection with the response line (16), and, in the affirmative, the position of the radionuclide (R) is calculated as being the position of this point of intersection of this single selected cone whereof the surface has a point of intersection with the response line (16).
The process as claimed in any one of the preceding claims, characterised in that an examination is made as to whether there are several selected cones (Cmn) whereof the surface has a point of intersection with the response line (16), and, in the affirmative, it is determined which of these selected cones (Cmn) whereof the surface has a point of intersection with the response line (16) is the most probable, the position of the radionuclide (R) is calculated as being the position of the point of intersection of the selected cone, whereof the surface has a point of intersection with the response line (16) and which is the most probable.
Dependencies are inferred from the claim text.