Positronium lifetime imaging with PET/CT

Processed data and images from the publication L. Mercolli et al. (2025) available at https://doi.org/10.1186/s40658-025-00790-z The evaluated data is in binary format. Its made of 64 bit floating point numbers and the data is organized as x,y,z,t. The three coordinates are in mm and the time difference between the prompt and coincidence photon is in ns for each detected three-photon event. It can be read with the following Python function, which returns a large table with four columns. def read_singles_binary(file): a = np.fromfile(file, dtype=np.float64).reshape((-1,4)) a = a[:,[1,2,0,3]] # convert to zyx a[:,0] *= -1 # flip z a[:,1] *= -1 # flip y return a There are the CT and coincidence PET images for each of the experimental setups. In addition, there are the orthopositronium lifetime images with voxel in ns and the images with the lifetime error as voxel values. All images are in NIfTI format.