Presentation
4 March 2019 Quantitative phase imaging of adherent mammalian cells: a comparison of three different techniques (Conference Presentation)
Cédric Allier, Julien Savatier, Serge Monneret, Yves Usson, Lionel Hervé, Ondrej Mandula, Pierre Blandin, Sophie Morales
Author Affiliations +
Proceedings Volume 10887, Quantitative Phase Imaging V; 108870C (2019) https://doi.org/10.1117/12.2508421
Event: SPIE BiOS, 2019, San Francisco, California, United States
Abstract
Quantitative phase imaging (QPI) allows the monitoring of adherent cell cultures continuously over long time periods and it delivers an image of the cell with pixel intensities corresponding to the optical path difference (OPD). These images can be processed to quantify several cellular features. In particular, cell OPD measurements allows the estimation of the cell dry mass, an important metric to study cell mass and growth kinetics. If the ability of QPI to provide phase-contrast images of cells is taken for granted, the accuracy and the precision of QPI cell OPD measurements can still be questioned. Indeed, the reported QPI cell measurements have not yet been assessed with any reference method (e.g. microfluidic resonators). And there is a lack of independent experimental comparison and validation which can hinder the acceptance of QPI in the realms of live-cell mass profiling. With the aim of filling this gap, here we compare three different methods: digital holographic microscopy, quadriwave lateral sheering interferometry and lens-free microscopy (not yet established as a QPI technique). The experimental design is based on the inter-modality comparisons of OPD measurements performed over several tens of cells. To ensure consistency, we performed OPD measurements on a fixed cell culture the same day on the same location. Importantly, the statistical analysis of these measurements allowed us to estimate the precision of QPI cell OPD measurements without any reference material. In addition, we have evaluated the influence of the post-processing steps (baseline subtraction, cell segmentation) on the precision of QPI cell measurements.
Conference Presentation
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Cédric Allier, Julien Savatier, Serge Monneret, Yves Usson, Lionel Hervé, Ondrej Mandula, Pierre Blandin, and Sophie Morales "Quantitative phase imaging of adherent mammalian cells: a comparison of three different techniques (Conference Presentation)", Proc. SPIE 10887, Quantitative Phase Imaging V, 108870C (4 March 2019); https://doi.org/10.1117/12.2508421
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KEYWORDS
Phase imaging

Digital holography

Image processing

Microscopy

Statistical analysis

Holographic interferometry

Holography

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