Patent ID: 8013308

Claim:
A method for reconstructing an image from a source (S) of photons, from interactions of photons emitted by this source, with a detector of a gamma-camera, positioned behind a collimator, comprising: associating with each photon interaction with the detector, a piece of information relating to the depth in the detector, of this interaction, reconstructing an image of the source (S) of photons from said depth information, the method further comprising breaking down the detector into several pixels, and each pixel into several superposed voxels, and further comprising, prior to the reconstruction step, the following steps: determining for each received photon, the voxel of the detector in which the photon has interacted, and counting for each voxel of the detector the number of photons having interacted in this voxel, defining for each voxel of the detector, a raw or differential statistical datum, a raw datum corresponding to the number of photons counted for the relevant voxel, a differential datum corresponding to a difference between numbers of counted photons, and wherein the reconstruction step is implemented from said statistical data.