A method for position and energy determination in scintillation detectors, in which the photoconversion energy and photoconversion position of particles triggering scintillation events are calculated from a distribution of the scintillation light released by a scintillation event or multiple scintillation events sampled by a photodetector in an iteration-free process, characterized in that the photoconversion energy and photoconversion position of particles are calculated according to equations, and, L ̄ m j q n 1 ⋯ q n t = ∑ i = 1 t log 2 ̃ μ m j, n i ⋅ q n i − max q n i ⋅ ∑ i = 1 t μ m j, n i m ML = argmax m j ∈ m 1 ⋯ m p L ̃ m j q n 1 ⋯ q n t E ML = norm m ML ∑ i = 1 t q n i / ∑ i = 1 t μ m ML, n i wherein L̃: log-likelihood for the signals { q n 1,..., q n t} and a scintillation result in the crystal of the index m j, N = N x · N y: total number of photodetector pixels in the scintillation detector, wherein N x is the number of photodetector pixels in the x-direction and N y is the number of photodetector pixels in the y-direction, n i ∈ { n 1,..., n t}: indices of the photodetector pixels for which q n i > q th and t ≤ N, q th denoting the threshold value set for the photodetector pixels, and t denoting the number of the photodetector pixels with a signal above the threshold value q th, n max: photodetector pixel indices with the maximum signal q n max, M = Σ l M l: total number of the scintillator segments in the scintillation detector, wherein M l = M l,x · M l,y is the number of the scintillator segments in the location l of a multi-layer scintillation detector, M l,x is the number of the scintillator segments in the x-direction in the location 1 and M l,y is the number of the scintillator segments in the y-direction in the location l, the location index 1 being omitted for single-layer scintillation detectors (only one layer of scintillator segments), M rel: number of relevant scintillator segments in the range of 1 ≤ M rel ≤ M, which are selected freely, m j ∈ { m 1,..., m p}: indices of the relevant scintillator segments taken into account in the calculation according to equations, and, wherein 1 ≤ p ≤ M rel, m ML: index of the scintillator segment in which the scintillation has likely occurred, q ni: signals from the photodetector array for the photodetector pixel n i, E ML: most probable total energy of the scintillation result upon determination by means of the algorithm according to equations, and, log 2 ̃: approximation for the logarithm to base 2, norm m: calibration factors for correct calculation of the energy, norm m ML: calibration factor for correct calculation of the energy for scintillator segment m ML, μ m j, n i: probabilities that a scintillation photon emitted by scintillation segment m j is detected in the photodetector pixel n i, μ m ML, n i: like μ m j, n i but for m j = m ML, wherein this algorithm is implemented in an FPGA or CPU. L̃: log-likelihood for the signals { q n 1,..., q n t} and a scintillation result in the crystal of the index m j, N = N x · N y: total number of photodetector pixels in the scintillation detector, wherein N x is the number of photodetector pixels in the x-direction and N y is the number of photodetector pixels in the y-direction, n i ∈ { n 1,..., n t}: indices of the photodetector pixels for which q n i > q th and t ≤ N, q th denoting the threshold value set for the photodetector pixels, and t denoting the number of the photodetector pixels with a signal above the threshold value q th, n max: photodetector pixel indices with the maximum signal q n max, M = Σ l M l: total number of the scintillator segments in the scintillation detector, wherein M l = M l,x · M l,y is the number of the scintillator segments in the location l of a multi-layer scintillation detector, M l,x is the number of the scintillator segments in the x-direction in the location 1 and M l,y is the number of the scintillator segments in the y-direction in the location l, the location index 1 being omitted for single-layer scintillation detectors (only one layer of scintillator segments), M rel: number of relevant scintillator segments in the range of 1 ≤ M rel ≤ M, which are selected freely, m j ∈ { m 1,..., m p}: indices of the relevant scintillator segments taken into account in the calculation according to equations, and, wherein 1 ≤ p ≤ M rel, m ML: index of the scintillator segment in which the scintillation has likely occurred, q ni: signals from the photodetector array for the photodetector pixel n i, E ML: most probable total energy of the scintillation result upon determination by means of the algorithm according to equations, and, log 2 ̃: approximation for the logarithm to base 2, norm m: calibration factors for correct calculation of the energy, norm m ML: calibration factor for correct calculation of the energy for scintillator segment m ML, μ m j, n i: probabilities that a scintillation photon emitted by scintillation segment m j is detected in the photodetector pixel n i, μ m ML, n i: like μ m j, n i but for m j = m ML, wherein this algorithm is implemented in an FPGA or CPU.