Liwen Zha

Liwen Zha
The Hong Kong Polytechnic University | PolyU · Department of Biomedical Engineering

About

4
Publications
703
Reads
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27
Citations
Education
October 2020 - October 2021
Independent Researcher
Independent Researcher
Field of study
  • Biomedical Engineering

Publications

Publications (4)
Article
Full-text available
Sleep posture monitoring is an essential assessment for obstructive sleep apnea (OSA) patients. The objective of this study is to develop a machine learning-based sleep posture recognition system using a dual ultra-wideband radar system. We collected radiofrequency data from two radars positioned over and at the side of the bed for 16 patients perf...
Article
Full-text available
Simple Summary The incidence of endocrine cancers (e.g., thyroid, pancreas, and adrenal) has been increasing; these cancers have a high premature mortality rate. Traditional medical imaging methods (e.g., MRI and CT) might not be sufficient for accurate cancer screening. Elastography complements conventional medical imaging modalities by identifyin...
Article
Full-text available
Emerging sleep health technologies will have an impact on monitoring patients with sleep disorders. This study proposes a new deep learning model architecture that improves the under-blanket sleep posture classification accuracy by leveraging the anatomical landmark feature through an attention strategy. The system used an integrated visible light...

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