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Journal Publication

Accurate label-free 3-part leukocyte recognition with single cell lens-free imaging flow cytometry

This publication appears in: Computers in Biology and Medicine

Authors: Y. Li, B. Cornelis, A. Dusa, G. Vanmeerbeeck, E. Sohn, K. Blaszkiewicz, D. Prodanov, P. Schelkens and L. Lagae

Volume: 96

Pages: 147-156

Publication Date: May. 2018


Abstract:

Three-part white blood cell differentials which are key to routine blood workups are typically performed in centralized laboratories on conventional hematology analyzers operated by highly trained staff. With the trend of developing miniaturized blood analysis tool for point-of-need in order to accelerate turnaround times and move routine blood testing away from centralized facilities on the rise, our group has developed a highly miniaturized holographic imaging system for generating lens-free images of white blood cells in suspension. Analysis and classification of its output data, constitutes the final crucial step ensuring appropriate accuracy of the system. In this work, we implement reference holographic images of single white blood cells in suspension, in order to establish an accurate ground truth to increase classification accuracy. We also automate the entire workflow for analyzing the output and demonstrate clear improvement in the accuracy of the 3-part classification. High-dimensional optical and morphological features are extracted from reconstructed digital holograms of single cells using the ground-truth images and advanced machine learning algorithms are investigated and implemented to obtain 99% classification accuracy. Representative features of the three white blood cell subtypes are selected and give comparable results, with a focus on rapid cell recognition and decreased computational cost.

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Dr. Ir. Bruno Cornelis

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bcorneli@etrovub.be

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Prof. Dr. Ir. Peter Schelkens

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pschelke@etrovub.be

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