"NiftyPET is an open source software solution for standalone and high-throughput PET image reconstruction and analysis. The key computational routines are written in CUDA C for fast and efficient processing on NVIDIA GPU devices. The routines are then embedded in Python C extensions to be readily available for high level programming in Python. The purpose of this software platform is to enable rapid processing of raw data as wells as image data for fully controlled quantitative PET image reconstruction and analysis. NiftyPET includes two stand-alone and independent Python packages: nipet and nimpa, which are dedicated to high-throughput image reconstruction and analysis. Strong emphasis is put on the data, which are acquired using positron emission tomography (PET) and magnetic resonance (MR), especially the hybrid and simultaneous PET/MR scanners."

https://niftypet.readthedocs.io/en/latest/