Abstract: International audience ; This paper introduces GLUS, a novel training-free plugand-play framework for ultrasound (US) super-resolution. GLUS extends the residual plug-and-play paradigm by incorporating a tailored guidance energy function to capture the domain-specific characteristics of US data. The proposed framework operates without the need for pre-training, offering a practical and efficient solution for enhancing US image resolution. Experiments on both simulated and in vivo data show that GLUS consistently outperforms existing benchmarks, achieving superior quantitative and qualitative results.
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