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| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2604.14494 |
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| _version_ | 1866918449880498176 |
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| author | Ha, Gia-Bao Shiromizu, Lucas Takanori Sanchez Song, Jaehyeon Xie, Zhuyun Crandall, Henry Assylbek, Dinali Boyadzhiev, Alexandra Zhang, Huanan Vasquez, Fernando Guevara Mukkamala, Ramakrishna Widlansky, Michael Nemati, Shamim Capecelatro, Jesse Figueroa, C. Alberto Sanchez, Benjamin |
| author_facet | Ha, Gia-Bao Shiromizu, Lucas Takanori Sanchez Song, Jaehyeon Xie, Zhuyun Crandall, Henry Assylbek, Dinali Boyadzhiev, Alexandra Zhang, Huanan Vasquez, Fernando Guevara Mukkamala, Ramakrishna Widlansky, Michael Nemati, Shamim Capecelatro, Jesse Figueroa, C. Alberto Sanchez, Benjamin |
| contents | Continuous ambulatory monitoring of peripheral vascular perfusion could enable earlier detection of vascular dysfunction in individuals with diabetes mellitus and more timely management of cardiovascular disease. Clinical imaging modalities provide high-fidelity vascular information but are impractical for ambulatory use, whereas most wearable devices are limited to single-modality sensing and do not provide imaging. Electrical bioimpedance has the potential to bridge this gap by enabling rapid spatial and temporal imaging while remaining sensitive to hemodynamic changes. Here, we introduce a wearable ring with 8 electrodes and 32-channel bioimpedance sensing for finger blood flow imaging. In 96 healthy participants measured at rest and during autonomic maneuvers, we resolve conductivity images in the digital arteries associated with pulsatile blood flow and train neural network models for continuous cuffless blood pressure waveform estimation. We demonstrate the feasibility of bioimpedance imaging in a ring form factor, supporting its potential for ambulatory cuffless hemodynamic monitoring. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_14494 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A wearable electrical hemodynamic imaging ring Ha, Gia-Bao Shiromizu, Lucas Takanori Sanchez Song, Jaehyeon Xie, Zhuyun Crandall, Henry Assylbek, Dinali Boyadzhiev, Alexandra Zhang, Huanan Vasquez, Fernando Guevara Mukkamala, Ramakrishna Widlansky, Michael Nemati, Shamim Capecelatro, Jesse Figueroa, C. Alberto Sanchez, Benjamin Medical Physics Continuous ambulatory monitoring of peripheral vascular perfusion could enable earlier detection of vascular dysfunction in individuals with diabetes mellitus and more timely management of cardiovascular disease. Clinical imaging modalities provide high-fidelity vascular information but are impractical for ambulatory use, whereas most wearable devices are limited to single-modality sensing and do not provide imaging. Electrical bioimpedance has the potential to bridge this gap by enabling rapid spatial and temporal imaging while remaining sensitive to hemodynamic changes. Here, we introduce a wearable ring with 8 electrodes and 32-channel bioimpedance sensing for finger blood flow imaging. In 96 healthy participants measured at rest and during autonomic maneuvers, we resolve conductivity images in the digital arteries associated with pulsatile blood flow and train neural network models for continuous cuffless blood pressure waveform estimation. We demonstrate the feasibility of bioimpedance imaging in a ring form factor, supporting its potential for ambulatory cuffless hemodynamic monitoring. |
| title | A wearable electrical hemodynamic imaging ring |
| topic | Medical Physics |
| url | https://arxiv.org/abs/2604.14494 |