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Micro- and nanoscale sensing of volatile organic compounds for early-stage cancer diagnosis

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TRAC-TRENDS IN ANALYTICAL CHEMISTRY
卷 153, 期 -, 页码 -

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ELSEVIER SCI LTD
DOI: 10.1016/j.trac.2022.116655

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Cancer diagnosis; Metabolomics; Biosensor; Sensor; Electronic nose; Lung cancer; Mass spectrometry; Ion mobility spectrometry; Early stage cancer diagnosis

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This article critically reviews the major advances in metabolomics for early-stage cancer detection by sampling volatile organic compounds in breath and bodily fluids. The operating principles and challenges of different sensing methods are discussed, as well as future research directions for widespread clinical usage.
A longstanding goal of oncology has been to accurately diagnose cancer at an early stage to improve clinical outcomes. Ideally, such testing would be inexpensive, non-invasive, involve minimal risk, and be scalable to large populations. Volatile biomarkers for early detection can be sampled readily from breath and bodily fluids non-invasively. Herein, the major advances in metabolomics for early-stage cancer detection by sampling volatile organic compounds in breath and bodily fluids are critically reviewed. The operating principles of different sensing methods, including their advantages and limitations are discussed. The primary challenges to developing routine, accurate, portable, and scalable diagnostic methods are detailed. Furthermore, future directions of research to enable the widescale usage of different methods in clinical diagnosis are discussed. (c) 2022 Elsevier B.V. All rights reserved.

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