Name: lensless on-chip imaging of cells provides a new tool for high-throughput cell-biology and medical diagnostics
Uploaded: 2009-12-14T17:00:00
Description: Watch this Scientific Journal Video about Lensless On-chip Imaging of Cells Provides a New Tool for High-throughput Cell-Biology and Medical Diagnostics at JoVE.com

<p class="jove_content">Here we discuss the experimental procedures that are involved in LUCAS [1-3]. To illustrate the proof of concept of LUCAS we will describe the imaging process for a whole blood sample.</p>
<p class="jove_title">A. Imaging Set-up</p>
<p class="jove_content">The LUCAS Imaging platform exhibits significant advantages to provide a cost-effective and compact alternative to existing point-of-care cytometry and medical diagnostic tools, especially for resource-limited settings. Rather than detecting the image of the cells, LUCA...

<ol>
	<li>Seo, S., Su, T., Tseng, D. K., Erlinger, A., Ozcan, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term="Lensfree+Holographic+Imaging+for+On-Chip+Cytometry+and+Diagnostics".">"Lensfree Holographic Imaging for On-Chip Cytometry and Diagnostics".</a> <em style='font-style: italic'>Lab Chip</em>. , (2009).</li><li>Su, T., Seo, S., Erlinger, A., Ozcan, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term="High-throughput+Imaging+and+Characterization+of+a+Heterogeneous+Cell+Solution+on+a+Chip"+.">"High-throughput Imaging and Characterization of a Heterogeneous Cell Solution on a Chip" .</a> <em style='font-style: italic'>Biotechnology and Bioengineering</em>. , (2008).</li><li>Su, T., Seo, S., Erlinger, A., Ozcan, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term="Multi-color+LUCAS:+Lensfree+on-chip+cytometry+using+tunable+monochromatic+illumination+and+digital+noise+reduction".">"Multi-color LUCAS: Lensfree on-chip cytometry using tunable monochromatic illumination and digital noise reduction".</a> <em style='font-style: italic'>Cellular and Molecular Bioengineering</em>. , (2008).</li></ol>

<p class="jove_content">We have illustrated that the LUCAS platform can accurately count and identify various micro-objects/cells on a chip based on their holographic signatures, and provides a promising tool for point-of-care medical diagnostics and high-throughput cell-biology. In order to accurately process the recorded holographic patterns, we implemented a custom-developed LUCAS decision software. This algorithm, which uses a statistical diffraction image database created by training of LUCAS images, identifies various features of cells wi...

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lensless on-chip imaging of cells provides a new tool for high-throughput cell-biology and medical diagnostics

Conventional optical microscopes image cells by use of objective lenses that work together with other lenses and optical components. While quite effective, this classical approach has certain limitations for miniaturization of the imaging platform to make it compatible with the advanced state of the art in microfluidics. In this report, we introduce experimental details of a lensless on-chip imaging concept termed LUCAS (<strong><em>L</em></strong>ensless <strong><em>U</em></strong>ltra-wide field-of-view <strong><em>C</em></strong>ell monitoring <strong><em>A</em></strong>rray platform based on <strong><em>S</em></strong>hadow imaging) that does not require any microscope objectives or other bulky optical components to image a heterogeneous cell solution over an ultra-wide field of view that can span as large as ~18 cm<sup>2</sup>. Moreover, unlike conventional microscopes, LUCAS can image a heterogeneous cell solution of interest over a depth-of-field of ~5 mm without the need for refocusing which corresponds to up to ~9 mL sample volume. This imaging platform records the shadows (i.e., lensless digital holograms) of each cell of interest within its field of view, and automated digital processing of these cell shadows can determine the type, the count and the relative positions of cells within the solution. Because it does not require any bulky optical components or mechanical scanning stages it offers a significantly miniaturized platform that at the same time reduces the cost, which is quite important for especially point of care diagnostic tools. Furthermore, the imaging throughput of this platform is orders of magnitude better than conventional optical microscopes, which could be exceedingly valuable for high-throughput cell-biology experiments.

Watch this Scientific Journal Video about Lensless On-chip Imaging of Cells Provides a New Tool for High-throughput Cell-Biology and Medical Diagnostics at JoVE.com

Lensless On-chip Imaging of Cells Provides a New Tool for High-throughput Cell-Biology and Medical Diagnostics

<p class="jove_content">Lensfree on-chip imaging and characterization of cells is illustrated. This on-chip cell imaging approach provides a compact and cost-effective tool for medical diagnostics and high-throughput cell biology applications, making it especially suitable for resource poor settings.</p>

Conventional optical microscopes image cells by use of objective lenses that work together with other lenses and optical components. While quite ...

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