Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Christopher J, Stapels"'
Autor:
Xiao Jie Chen, Erik B. Johnson, Sam Vogel, Christopher J. Stapels, Daniel E. Fernandez, James F. Christian, Matt Podolsky
Publikováno v:
IEEE Transactions on Nuclear Science. 63:1109-1116
Solid-state photomultiplier (SSPM) devices are a viable alternative to photomultiplier tubes for nuclear and space radiation detection and science instruments. Noise terms such as dark noise, cross talk, after-pulsing, and their radiation sensitivity
Autor:
Christopher J. Stapels, James F. Christian, Noah J. Kolodziejski, Daniel A. McAdams, Daniel E. Fernandez, Jameson O'Reilly
Publikováno v:
Proceedings of SPIE--the International Society for Optical Engineering. 10056
Optical tissue phantoms are necessary for instrument benchmarking and providing a consistent baseline for experiments in various fields of tissue spectroscopy, including diffuse correlation spectroscopy (DCS). To provide the most useful comparisons,
Autor:
Seung Yup, Lee, Julia M, Pakela, Taylor L, Hedrick, Karthik, Vishwanath, Michael C, Helton, Yooree, Chung, Noah J, Kolodziejski, Christopher J, Stapels, Daniel R, McAdams, Daniel E, Fernandez, James F, Christian, Jameson, O'Reilly, Dana, Farkas, Brent B, Ward, Stephen E, Feinberg, Mary-Ann, Mycek
Publikováno v:
Proceedings of SPIE--the International Society for Optical Engineering. 10054
In reconstructive surgery, tissue perfusion/vessel patency is critical to the success of microvascular free tissue flaps. Early detection of flap failure secondary to compromise of vascular perfusion would significantly increase the chances of flap s
Autor:
Jameson O'Reilly, Karthik Vishwanath, Dana Farkas, Seung Yup Lee, Mary Ann Mycek, Christopher J. Stapels, Yooree G. Chung, Daniel R. McAdams, Julia M. Pakela, Noah J. Kolodziejski, Michael C. Helton, Stephen E. Feinberg, Brent B. Ward, James F. Christian, Daniel E. Fernandez
Publikováno v:
Journal of biomedical optics. 22(12)
In reconstructive surgery, the ability to detect blood flow interruptions to grafted tissue represents a critical step in preventing postsurgical complications. We have developed and pilot tested a compact, fiber-based device that combines two compli
Autor:
Sara Zanfardino, Noah J. Kolodziejski, Taylor L. Hedrick, Michael C. Helton, Karthik Vishwanath, James F. Christian, Mary Ann Mycek, Julia M. Pakela, Christopher J. Stapels, Daniel R. McAdams, Seung Yup Lee, Stephen E. Feinberg, Daniel E. Fernandez, Yooree G. Chung
Publikováno v:
Optical Diagnostics and Sensing XVII: Toward Point-of-Care Diagnostics.
It is essential to monitor tissue perfusion during and after reconstructive surgery, as restricted blood flow can result in graft failures. Current clinical procedures are insufficient to monitor tissue perfusion, as they are intermittent and often s
Autor:
Karthik Vishwanath, Dana Farkas, Julia M. Pakela, Noah J. Kolodziejski, Yooree G. Chung, Stephen E. Feinberg, Michael C. Helton, Daniel E. Fernandez, Jameson O'Reilly, Taylor L. Hedrick, Brent B. Ward, Seung Yup Lee, Christopher J. Stapels, James F. Christian, Mary Ann Mycek, Daniel R. McAdams
Publikováno v:
Advanced Biomedical and Clinical Diagnostic and Surgical Guidance Systems XV.
In reconstructive surgery, tissue perfusion/vessel patency is critical to the success of microvascular free tissue flaps. Early detection of flap failure secondary to compromise of vascular perfusion would significantly increase the chances of flap s
Autor:
Xiao Jie Chen, Rastgo Hawrami, Eric Benton, James F. Christian, Eric Chapman, Christopher J. Stapels, Thomas H. Prettyman, Chad Whitney, Edgar V. van Loef, Erik B. Johnson
Publikováno v:
IEEE Transactions on Nuclear Science. 60:830-836
The space environment is inherently complicated with multiple sources of radiation, and within a spacecraft, these radiation fields are further complicated by the production of secondary particles (i.e., γ, e±, n, π±, π0), where the generation o
Autor:
Xiao Jie Chen, Tyler Stannard, Christopher J. Stapels, James F. Christian, Chad Whitney, Keith E. Holbert, Erik B. Johnson, A. Kaczmarowski
Publikováno v:
IEEE Transactions on Nuclear Science. 60:644-651
With an increasingly complex worldwide nuclear environment, nuclear forensics provides a deterrent through proper attribution. Identifying the type of event is important in the attribution process, and the lithium battery has the potential to provide
Autor:
Michael J. Joyner, Christopher J. Stapels, Christopher P. Johnson, Daniel E. Fernandez, Noah J. Kolodziejski, Matthew J. Podolsky, Dana Farkas, Daniel R. McAdams, Norman A. Paradis, James F. Christian
Publikováno v:
Dynamics and Fluctuations in Biomedical Photonics XIII.
Currently the diagnosis of hemorrhagic shock is essentially clinical, relying on the expertise of nurses and doctors. One of the first measurable physiological changes that marks the onset of hemorrhagic shock is a decrease in capillary blood flow. D
Autor:
Daniel A. McAdams, Christopher J. Stapels, Daniel E. Fernandez, Noah J. Kolodziejski, Matthew J. Podolsky, Dana Farkas, James F. Christian
Publikováno v:
SPIE Proceedings.
Diffuse correlation spectroscopy (DCS) is a technique which enables powerful and robust non-invasive optical studies of tissue micro-circulation and vascular blood flow. The technique amounts to autocorrelation analysis of coherent photons after thei