ArticleScience advances2026
Optoacoustically augmented magnetic guidewire for radiation-free minimally invasive therapies.
Article in Science advances, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
12 authors.
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Abstract
Endovascular interventions are essential for treating cerebrovascular diseases, yet their monitoring methods commonly rely on ionizing radiation and contrast agents, posing unnecessary risks to patients and clinicians. We present a multifunctional optoacoustically augmented magnetic guidewire (OptoMaG) that integrates optoacoustic imaging with magnetic navigation to enable radiation-free, image-guided interventions. The ~250-micrometer flexible guidewire incorporates a 460-nanometer luminescent core with an enhanced optoacoustic signature and a FePt magnetic tip for precise, steerable control. Proof-of-concept studies show that OptoMaG can be actively navigated with external magnetic fields to traverse a 3D human-scale cerebrovascular phantom and accurately reach target brain sites. Beyond navigation, the FePt tip enables localized thermal ablation under remote radiofrequency stimulation, highlighting its theranostic potential for tumor treatment. In addition, OptoMaG functions as a light source for photodynamic therapy, selectively activating photosensitizers to destroy tumor cells while preserving healthy tissue. Collectively, OptoMaG provides a safe, radiation-free platform merging real-time navigation with targeted therapeutic capabilities.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.