Fig. 1 Fluorescence image reconstruction and analysis in flow implementations of ghost cytometry. Fluorescence image reconstruction and analysis in flow.

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Presentation transcript:

Fig. 1 Fluorescence image reconstruction and analysis in flow implementations of ghost cytometry. Fluorescence image reconstruction and analysis in flow implementations of ghost cytometry. (A) Pairs of an example compressive waveform generated from fluorescent beads in high-speed flow at a temporal width of <100 μs, and its reconstructed image (cropped after reconstruction). Left and right panels were obtained from different kinds of fluorescent beads [fluorescent yellow particles (FP-7052-2 and FP-10052-2, Spherotech) with mean diameters of 7.4 μm and 10.2 μm, respectively]. (B) Left and right panels are histograms of bead diameter and total fluorescence intensity, respectively, obtained from a library of reconstructed single-bead images for the same kinds of beads as in (A), clearly showing the capability of analysis based on the reconstructed images. After cropping the reconstructed images into a size of 32 by 32 pixels, the diameters and total intensities were calculated by applying Canny edge detection and integrating the cropped images, respectively. (C) Left and right panels are histograms of forward scattering and fluorescence intensity, respectively, for the same kinds of beads as in (B) obtained by using a commercial flow cytometer (JSAN, Bay Bioscience). The consistency between the histograms in (B) and (C) confirms the imaging capability of GC. (D) Top: Example compressive waveforms from fluorescent beads (FP-7052-2) flowing through a PDMS microfluidic device and their reconstructed images (cropped after reconstruction). The flow speed was slowed down in consideration of the stability of the PDMS device. Bottom: A fluorescence image taken by a conventional microscope (Olympus), used as a reference for calculating PSNRs. The image of the reference bead was taken on a slide glass with a 20× objective (UPLSAPO 20×, Olympus) and an arrayed pixel camera (ZWO ASI1600MM). The PSNRs were calculated with images adjusted to scale, cropped to 134 by 134 pixels, and normalized with respect to intensity. All scale bars, 5 μm. Sadao Ota et al. Science 2019;364:eaav3136 Copyright © , American Association for the Advancement of Science