X-ray Phase Contrast Allows Three Dimensional, Quantitative Imaging of Hydrogel Implants
Abstract
Three dimensional imaging techniques are needed for the evaluation and assessment of biomaterials used for tissue engineering and drug delivery applications. Hydrogels are a particularly popular class of materials for medical applications but are difficult to image in tissue using most available imaging modalities. Imaging techniques based on X-ray Phase Contrast (XPC) have shown promise for tissue engineering applications due to their ability to provide image contrast based on multiple X-ray properties. In this manuscript we describe results using XPC to image a model hydrogel and soft tissue structure. Porous fibrin loaded poly(ethylene glycol) hydrogels were synthesized and implanted in a rodent subcutaneous model. Samples were explanted and imaged with an analyzer-based XPC technique and processed and stained for histology for comparison. Both hydrogel and soft tissues structures could be identified in XPC images. Structure in skeletal muscle adjacent could be visualized and invading fibrovascular tissue could be quantified. In quantitative results, there were no differences between XPC and the gold-standard histological measurements. These results provide evidence of the significant potential of techniques based on XPC for 3D imaging of hydrogel structure and local tissue response.
- Authors:
-
- Illinois Inst. of Technology, Chicago, IL (United States); Edward Hines Jr. VA Hospital, Hines, IL (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
- Washington Univ., St. Louis, MO (United States)
- Illinois Inst. of Technology, Chicago, IL (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1341637
- Report Number(s):
- BNL-113346-2016-JA
Journal ID: ISSN 0090-6964
- Grant/Contract Number:
- SC00112704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Annals of Biomedical Engineering
- Additional Journal Information:
- Journal Volume: 44; Journal Issue: 3; Journal ID: ISSN 0090-6964
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 60 APPLIED LIFE SCIENCES; X-ray phase contrast; imaging; hydrogels; tissue engineering; micro-computed tomography
Citation Formats
Appel, Alyssa A., Larson, Jeffrey C., Jiang, Bin, Zhong, Zhong, Anastasio, Mark A., and Brey, Eric M. X-ray Phase Contrast Allows Three Dimensional, Quantitative Imaging of Hydrogel Implants. United States: N. p., 2015.
Web. doi:10.1007/s10439-015-1482-5.
Appel, Alyssa A., Larson, Jeffrey C., Jiang, Bin, Zhong, Zhong, Anastasio, Mark A., & Brey, Eric M. X-ray Phase Contrast Allows Three Dimensional, Quantitative Imaging of Hydrogel Implants. United States. https://doi.org/10.1007/s10439-015-1482-5
Appel, Alyssa A., Larson, Jeffrey C., Jiang, Bin, Zhong, Zhong, Anastasio, Mark A., and Brey, Eric M. Tue .
"X-ray Phase Contrast Allows Three Dimensional, Quantitative Imaging of Hydrogel Implants". United States. https://doi.org/10.1007/s10439-015-1482-5. https://www.osti.gov/servlets/purl/1341637.
@article{osti_1341637,
title = {X-ray Phase Contrast Allows Three Dimensional, Quantitative Imaging of Hydrogel Implants},
author = {Appel, Alyssa A. and Larson, Jeffrey C. and Jiang, Bin and Zhong, Zhong and Anastasio, Mark A. and Brey, Eric M.},
abstractNote = {Three dimensional imaging techniques are needed for the evaluation and assessment of biomaterials used for tissue engineering and drug delivery applications. Hydrogels are a particularly popular class of materials for medical applications but are difficult to image in tissue using most available imaging modalities. Imaging techniques based on X-ray Phase Contrast (XPC) have shown promise for tissue engineering applications due to their ability to provide image contrast based on multiple X-ray properties. In this manuscript we describe results using XPC to image a model hydrogel and soft tissue structure. Porous fibrin loaded poly(ethylene glycol) hydrogels were synthesized and implanted in a rodent subcutaneous model. Samples were explanted and imaged with an analyzer-based XPC technique and processed and stained for histology for comparison. Both hydrogel and soft tissues structures could be identified in XPC images. Structure in skeletal muscle adjacent could be visualized and invading fibrovascular tissue could be quantified. In quantitative results, there were no differences between XPC and the gold-standard histological measurements. These results provide evidence of the significant potential of techniques based on XPC for 3D imaging of hydrogel structure and local tissue response.},
doi = {10.1007/s10439-015-1482-5},
journal = {Annals of Biomedical Engineering},
number = 3,
volume = 44,
place = {United States},
year = {Tue Oct 20 00:00:00 EDT 2015},
month = {Tue Oct 20 00:00:00 EDT 2015}
}
Web of Science
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