Statistical characterization of engineered tissues using confocal mosaic technology

David Levitz, Ardalan Ardeshiri, Jabeer Ahmed, Daniel S. Gareau, Steven Jacques

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Characterization of engineered tissues using optical methods often involves tradeoff between the fraction of total volume that is imaged and the spatial resolution. The limitation is not technological but rather practical, having more to do with effective probe designs and computer memory storage for large datasets. In this paper, we propose using confocal mosaicing, a technique used to characterize large volumes of excisioned biopsies from Mohs surgeries, to characterizing collagen gels. This technique stitches together high-resolution 3D images of a series adjacent millimeter sized regions that collectively make up areas that are ∼cm2. Image acquisition time is approximately 5 min. The resulting high-resolution images closely resemble hematoxylin and eosin histological sections, only obtained without the time-consuming embedding and sectioning steps. Disk-shaped collagen gels that are 1 ml volume and ~1.5 cm diameter were prepared with smooth muscle cells and imaged at days 1 and 5. Using the digital staining technique, we were able to survey the spatial distribution of cells in the hydrogel and assess spatial heterogeneity in 3D from the fluorescence data. The reflectance data provided information on collagen fibril structure and matrix remodeling by the cells. Digital staining presented the data in a way that is easily interpreted by tissue engineers. Altogether, we believe confocal mosaicing and digital staining represents an important technological novelty that significantly advances nondestructive optical evaluation of engineered tissues.

Original languageEnglish (US)
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume7566
DOIs
StatePublished - 2010
EventOptics in Tissue Engineering and Regenerative Medicine IV - San Francisco, CA, United States
Duration: Jan 24 2010Jan 24 2010

Other

OtherOptics in Tissue Engineering and Regenerative Medicine IV
CountryUnited States
CitySan Francisco, CA
Period1/24/101/24/10

Fingerprint

staining
collagens
Collagen
Tissue
Staining and Labeling
Technology
Gels
gels
Mohs Surgery
smooth muscle
memory (computers)
muscle cells
Biopsy
Hydrogel
Image acquisition
high resolution
tradeoffs
Hematoxylin
Eosine Yellowish-(YS)
Image resolution

Keywords

  • Cells
  • Collagen
  • Confocal microscopy
  • Fluorescence imaging
  • Mosaics
  • Tissue engineering

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

Cite this

Levitz, D., Ardeshiri, A., Ahmed, J., Gareau, D. S., & Jacques, S. (2010). Statistical characterization of engineered tissues using confocal mosaic technology. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 7566). [75660D] https://doi.org/10.1117/12.843262

Statistical characterization of engineered tissues using confocal mosaic technology. / Levitz, David; Ardeshiri, Ardalan; Ahmed, Jabeer; Gareau, Daniel S.; Jacques, Steven.

Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 7566 2010. 75660D.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Levitz, D, Ardeshiri, A, Ahmed, J, Gareau, DS & Jacques, S 2010, Statistical characterization of engineered tissues using confocal mosaic technology. in Progress in Biomedical Optics and Imaging - Proceedings of SPIE. vol. 7566, 75660D, Optics in Tissue Engineering and Regenerative Medicine IV, San Francisco, CA, United States, 1/24/10. https://doi.org/10.1117/12.843262
Levitz D, Ardeshiri A, Ahmed J, Gareau DS, Jacques S. Statistical characterization of engineered tissues using confocal mosaic technology. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 7566. 2010. 75660D https://doi.org/10.1117/12.843262
Levitz, David ; Ardeshiri, Ardalan ; Ahmed, Jabeer ; Gareau, Daniel S. ; Jacques, Steven. / Statistical characterization of engineered tissues using confocal mosaic technology. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 7566 2010.
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