Three‐dimensional regions‐of‐interest–based intra‐operative four‐dimensional soft tissue perfusion imaging using a standard x‐ray system with no gantry rotation: A simulation study for a proof of concept

PURPOSE: Many interventional procedures aim at changing soft tissue perfusion or blood flow. One problem at present is that soft tissue perfusion and its changes cannot be assessed in an interventional suite because cone-beam computed tomography is too slow (it takes 4-10 s per volume scan). In order to address the problem, we propose a novel method called IPEN for Intra-operative four-dimensional soft tissue PErfusion using a standard x-ray …