Fast Auto-Differentiable Digitally Reconstructed Radiographs for Solving Inverse Problems in Intraoperative Imaging. (arXiv:2208.12737v1 [cs.CV])

The use of digitally reconstructed radiographs (DRRs) to solve inverse
problems such as slice-to-volume registration and 3D reconstruction is
well-studied in preoperative settings. In intraoperative imaging, the utility
of DRRs is limited by the challenges in generating them in real-time and
supporting optimization procedures that rely on repeated DRR synthesis. While
immense progress has been made in accelerating the generation of DRRs through
algorithmic refinements and GPU implementations, DRR-based optimization remains
slow because most DRR generators do not offer a …

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