snapMRF

snapMRF is an open-source software package that accelerates the reconstruction process for magnetic resonance fingerprinting (MRF), a cutting-edge quantitative MRI technique. The package parallelizes dictionary generation and signal matching on the GPU, significantly reducing computation time compared to other open-source packages. snapMRF models signal generation using Bloch equation simulation and the extended phase graph (EPG) formalism and includes unit tests to ensure correctness.

Testing on a calibration phantom and an in vivo brain demonstrated that snapMRF retrieves accurate parameters while being 10-1000 times faster for dictionary generation and 10-100 times faster for signal matching. This speed improvement could enable real-time parameter map generation for small dictionaries, enhancing the dependability and accuracy of clinical MRF applications. Further refinements to the acquisition scheme and dictionary setup could improve quantitative accuracy.