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arXiv · 2607.27785

Bounded-Latency Spherical-Histogram Reconstruction for Compton Cameras

Francisco J. Albiol·Luis Caballero·José Escalante·Alberto Albiol·Salvador Tortajada·Elena Larrea Estrelles·José Luis Leganés-Nieto
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Abstract

Gamma-ray imaging with Compton cameras is computationally demanding because conventional reconstruction retains the list-mode acquisition inside the inversion loop: event-dependent cone/voxel interactions must be recomputed as the event count grows. We present a spherical-histogram framework in which each Compton event is encoded online into detector-centred angular histograms. Volumetric reconstruction is then performed from coherent histogram snapshots using a precomputed sparse projection operator. This turns the event stream into a bounded reconstruction state, decoupling event accumulation from iterative inversion. The method supports multi-view and multi-resolution operation, non-blocking acquisition, and iterative forward/backward reconstruction whose dominant cost depends.

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Francisco J. Albiol, Luis Caballero, José Escalante, Alberto Albiol, Salvador Tortajada, Elena Larrea Estrelles, José Luis Leganés-Nieto. 2026-07-30. Bounded-Latency Spherical-Histogram Reconstruction for Compton Cameras. https://arxiv.org/abs/2607.27785

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