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We introduce a new image cytometer design for detection of very small particulate and demonstrate its capability in water analysis. The device is a compact microscope composed of off the shelf components, such as a light emitting diode…

Optics · Physics 2016-02-17 Juan Miguel Pérez , Marc Jofre , Pedro Martínez , Valerio Pruneri

Flow cytometry is a technique that measures multiple fluorescence and light scatter-associated parameters from individual cells as they flow a single file through an excitation light source. These cells are labeled with antibodies to detect…

We present a wide-field multi-pass implementation of label-free imaging flow cytometry. Our technique is shown for high-speed flow imaging of ensembles of human red blood cells with up to four passes, demonstrating x4 enhancement in…

While analysing rare blood cell aggregates remains challenging in automated haematology, they could markedly advance label-free functional diagnostics. Conventional flow cytometers efficiently perform cell counting with leukocyte…

Deep learning has dramatically improved the performance in many application areas such as image classification, object detection, speech recognition, drug discovery and etc since 2012. Where deep learning algorithms promise to discover the…

Image and Video Processing · Electrical Eng. & Systems 2020-03-25 X. F. Xu , S. Talbot , T. Selvaraja

We demonstrate novel instrumentation for spontaneous Raman spectroscopy in biofluids, enabling development of a portable, automated, reliable diagnostics technique requiring minimal operator expertise to quantify disease markers. Label-free…

Biological Physics · Physics 2021-05-27 Emily E. Storey , Duxuan Wu , Amr S. Helmy

The consumption of microbial-contaminated food and water is responsible for the deaths of millions of people annually. Smartphone-based microscopy systems are portable, low-cost, and more accessible alternatives for the detection of Giardia…

Image and Video Processing · Electrical Eng. & Systems 2024-08-07 Suprim Nakarmi , Sanam Pudasaini , Safal Thapaliya , Pratima Upretee , Retina Shrestha , Basant Giri , Bhanu Bhakta Neupane , Bishesh Khanal

Deep learning has achieved spectacular performance in image and speech recognition and synthesis. It outperforms other machine learning algorithms in problems where large amounts of data are available. In the area of measurement technology,…

Quantitative Methods · Quantitative Biology 2019-08-20 Yueqin Li , Ata Mahjoubfar , Claire Lifan Chen , Kayvan Reza Niazi , Li Pei , Bahram Jalali

Imaging flow cytometry shows significant potential for increasing our understanding of heterogeneous and complex life systems and is useful for biomedical applications. Ghost cytometry is a recently proposed approach for directly analyzing…

Flow cytometry is a widespread and powerful technique, whose resolution is determined by its capacity to accurately distinguish fluorescently positive populations from negative ones. However, most informative results are discarded while…

Increasing demand for understanding the vast heterogeneity of cellular phenotypes has driven the development of imaging flow cytometry (IFC), that combines features of flow cytometry with fluorescence and bright field microscopy. IFC…

Quantitative Methods · Quantitative Biology 2019-02-06 Yuanyuan Han , Rui Tang , Yi Gu , Alex Ce Zhang , Wei Cai , Violet Castor , Sung Hwan Cho , William Alaynick , Yu-Hwa Lo

We introduce an image cytometer (I-CYT) for the analysis of phytoplankton in fresh and marine water environments. A linear quantification of cell numbers was observed covering several orders of magnitude using cultures of Tetraselmis and…

Quantitative Methods · Quantitative Biology 2016-11-23 J. M. Pérez , M. Jofre , P. Martínez , M. A. Yáñez , V. Catalan , A. Parker , M. Veldhuis , V. Pruneri

Exposure to bio-aerosols such as mold spores and pollen can lead to adverse health effects. There is a need for a portable and cost-effective device for long-term monitoring and quantification of various bio-aerosols. To address this need,…

Applied Physics · Physics 2022-11-23 Yi Luo , Yijie Zhang , Tairan Liu , Alan Yu , Yichen Wu , Aydogan Ozcan

Rapid identification of bacterial species is crucial in medicine and food hygiene. In order to achieve rapid and label-free identification of bacterial species at the single bacterium level, we propose and experimentally demonstrate an…

Intraoperative visualization of hemodynamics is crucial for accurate diagnosis and informed surgical decision-making. In neurosurgery, indocyanine green fluorescence imaging (ICG-FI) is the gold standard for assessing blood flow and…

Medical Physics · Physics 2025-10-20 Yan Shi , Denghui Zhao , Jingyi Yu , Wei Ni , Pengcheng Li , Yun Gu , Peng Miao , Shanbao Tong

Label-free approaches are attractive in cytological imaging due to their flexibility and cost efficiency. They are supported by machine learning methods, which, despite the lack of labeling and the associated lower contrast, can classify…

Computer Vision and Pattern Recognition · Computer Science 2023-11-27 Stefan Röhrl , Johannes Groll , Manuel Lengl , Simon Schumann , Christian Klenk , Dominik Heim , Martin Knopp , Oliver Hayden , Klaus Diepold

Imaging and analysis of many single cells hold great potential in our understanding of heterogeneous and complex life systems and in enabling biomedical applications. We here introduce a recently realized image-free "imaging" cytometry…

Image and Video Processing · Electrical Eng. & Systems 2019-03-29 Sadao Ota , Ryoichi Horisaki , Yoko Kawamura , Issei Sato , Hiroyuki Noji

We present a method for a real time visualization and automatic processing for detection and classification of untouched cancer cells in blood during stain free imaging flow cytometry using digital holographic microscopy and machine…

Biological Physics · Physics 2021-06-15 Noga Nissim , Matan Dudaie , Itay Barnea. , Natan T. Shaked

Flow cytometry is a cornerstone technique in medical and biological research, providing crucial information about cell size and granularity through forward scatter (FSC) and side scatter (SSC) signals. Despite its widespread use, the…

Optics · Physics 2024-08-29 Jaepil Jo , Herve Hugonnet , Mahn Jae Lee , YongKeun Park

We present a rapid and stain-free quantitative viral plaque assay using lensfree holographic imaging and deep learning. This cost-effective, compact, and automated device significantly reduces the incubation time needed for traditional…

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