Abstract: A method for monitoring a hadron beam during hadron-therapy treatment of a subject including tumour cells labelled with a radiopharmaceutical product, in which the hadron beam includes a plurality of discrete hadron bursts, the method including the following steps: when a burst impacts on the subject, detecting the prompt gamma generated by the interaction of the hadrons of the burst with the tissues of the subject using a Compton telescope and reconstructing an image of the interaction volume; when no burst impacts on the subject, extracting the position of the tumour cells labelled with the radiopharmaceutical product using the Compton telescope and reconstructing an image of the total volume of the tumour; comparing the image of the interaction volume and the image of the total volume of the tumour so as to locate the measured interaction volume relative to the measured total volume of the tumour.

Abstract: 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.

Abstract: Radiation detector comprising one or more amplifying structures, each comprising an input electrode and an output grid which are kept separated by an insulating spacer. Each spacer defines amplification spaces for generating electrons by the avalanche effect. The dimensions of these amplification spaces are decorrelated with those of the mesh cells of the output grid.