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Your search keyword '"Morris, Michael"' showing total 26 results
Start Over Author "Morris, Michael" Journal journal of biomedical optics
26 results on '"Morris, Michael"'

2. Raman spectroscopy for label-free identification of calciphylaxis

Author

Lloyd, William R., primary, Agarwal, Shailesh, additional, Nigwekar, Sagar U., additional, Esmonde-White, Karen, additional, Loder, Shawn, additional, Fagan, Shawn, additional, Goverman, Jeremy, additional, Olsen, Bjorn R., additional, Jumlongras, Dolrudee, additional, Morris, Michael D., additional, and Levi, Benjamin, additional

Published
2015
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23. High-contrast subcutaneous vein detection and localization using multispectral imaging.

Author

Fengtao Wang, Behrooz, Ali, Morris, Michael, and Adibi, Ali

Subjects
MEDICAL imaging systems, VEINS, WAVELENGTHS, REFLECTANCE, ALGORITHMS, INFRARED imaging
Abstract

Multispectral imaging has shown promise in sub-cutaneous vein detection and localization in human subjects. While many limitations of single-wavelength methods are addressed in multispectral vein detection methods, their performance is still limited by artifacts arising from background skin reflectance and optimality of postprocessing algorithms. We propose a background removal technique that enhances the contrast and performance of multispectral vein detection. We use images acquired at visible wave-lengths as reference for removing skin reflectance background from subcutaneous structures in near-infrared images. Results are validated by experiments on human subjects. [ABSTRACT FROM AUTHOR]

Published
2013
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25. Vibrational Spectroscopy and Imaging.

Author

Mahadevan-Jansen, Anita, Morris, Michael D., and Petrich, Wolfgang

Subjects
*VIBRATIONAL spectra, *IMAGING systems
Abstract

An introduction is presented on articles about vibrational spectroscopy and imaging.

Published
2014
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26. Noninvasive Raman spectroscopy of rat tibiae: approach to in vivo assessment of bone quality.

Author

Okagbare PI, Begun D, Tecklenburg M, Awonusi A, Goldstein SA, and Morris MD

Subjects
Animals, Equipment Design, Equipment Failure Analysis, Rats, Calcification, Physiologic, Durapatite analysis, Fiber Optic Technology instrumentation, Lighting instrumentation, Spectrum Analysis, Raman instrumentation, Tibia chemistry, Transducers
Abstract

We report on in vivo noninvasive Raman spectroscopy of rat tibiae using robust fiber-optic Raman probes and holders designed for transcutaneous Raman measurements in small animals. The configuration allows placement of multiple fibers around a rat leg, maintaining contact with the skin. Bone Raman data are presented for three regions of the rat tibia diaphysis with different thicknesses of overlying soft tissue. The ability to perform in vivo noninvasive Raman measurement and evaluation of subtle changes in bone composition is demonstrated with rat leg phantoms in which the tibia has carbonated hydroxylapatite, with different carbonate contents. Our data provide proof of the principle that small changes in bone composition can be monitored through soft tissue at anatomical sites of interest in biomedical studies.

Published
2012
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