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Vector-Driven Projection and Backprojection
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DOI：10.1002/mp.70581.png)
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Abstract
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Projection and backprojection are fundamental operators in tomographic image reconstruction. Existing approaches—namely pixel-driven (PD), ray-driven (RD), and distance-driven (DD)—are subject to well-known trade-offs among interpolation artifacts, geometric flexibility, and computational cost.
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