AI RESEARCH
PA-SFM: Tracker-free differentiable acoustic radiation for freehand 3D photoacoustic imaging
arXiv CS.CV
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ArXi:2604.09643v1 Announce Type: new Three-dimensional (3D) handheld photoacoustic tomography typically relies on bulky and expensive external positioning sensors to correct motion artifacts, which severely limits its clinical flexibility and accessibility. To address this challenge, we present PA-SFM, a tracker-free framework that leverages exclusively single-modality photoacoustic data for both sensor pose recovery and high-fidelity 3D reconstruction via differentiable acoustic radiation modeling.