Abstract: A method for underwater packaging of radioactive materials includes creating a vacuum in a cavity of a cleaning device to automatically cause a portion of the cleaning device to move upward to actuate the cleaning device from an open position to a closed position; mounting the cleaning device inside a safe containment area of a transportation and/or storage device; placing the transportation and/or storage device in a pool after filling the safe containment area with water; loading a radioactive material into the safe containment area; closing the transportation and/or storage device using at least one cover; extracting the transportation and/or storage device from the pool; draining the water inside the safe containment area; and creating a pressure differential in the safe containment area to dry the safe containment area, wherein the pressure differential causes the cleaning device to automatically actuate from the closed position to the open position.

Abstract: A method for underwater packaging of radioactive materials includes creating a vacuum in a cavity of a cleaning device to automatically cause a portion of the cleaning device to move upward to actuate the cleaning device from an open position to a closed position; mounting the cleaning device inside a safe containment area of a transportation and/or storage device; placing the transportation and/or storage device in a pool after filling the safe containment area with water; loading a radioactive material into the safe containment area; closing the transportation and/or storage device using at least one cover; extracting the transportation and/or storage device from the pool; draining the water inside the safe containment area; and creating a pressure differential in the safe containment area to dry the safe containment area, wherein the pressure differential causes the cleaning device to automatically actuate from the closed position to the open position.

Abstract: A method for reconstructing an image of a source (S) of photons from interactions of photons emitted by this source with a detector (2) of a gamma-camera, positioned behind a collimator (4), the method including associating with each photon interaction with the detector, a piece of information relating to the depth in the detector, of this interaction, and reconstructing an image of the source (S) of photons from said depth information in the detector.

Abstract: A photonic radiation detection device includes a collimator, a detector, means for localization in the detection plane defining on the one hand the partitioning of the detection plane in physical or virtual pixels of transversal dimensions smaller than those of the collimator channels, and associating on the other hand one of said pixels to each photon interaction. The detection device has at least in one previously selected acquisition configuration, a degree of pixelation in the detection plane greater than 1 and a collimator-detector distance (c) greater than one tenth of the septal height (h) of the collimator. A method for dimensioning such a device includes, for at least one given spatial frequency, calculating and comparing merit indicator values for different acquisition configurations of a structural model of the detection device.

Abstract: A method for reconstructing an image of a source (S) of photons from interactions of photons emitted by this source with a detector (2) of a gamma-camera, positioned behind a collimator (4), including: 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 in the detector.