  Modern TOF-PET scanner systems require high-speed computing resources for
efficient data processing, monitoring and image reconstruction. In this article
we present the data flow and software architecture for the novel TOF-PET
scanner developed by the J-PET collaboration. We discuss the data acquisition
system, reconstruction framework and image reconstruction software. Also, the
concept of computing outside hospitals in the remote centers such as \'Swierk
Computing Centre in Poland is presented.
