Zobrazeno 1 - 10
of 22
pro vyhledávání: '"JAMES M. MASCIOTTI"'
Autor:
VENKATA N. VELVADAPU, JAMES M. MASCIOTTI, ANDREW D. DEHENNIS, PATRICIA SANCHEZ, KATHERINE S. TWEDEN, FRANCINE R. KAUFMAN, SORIN IOACARA
Publikováno v:
Diabetes. 71
Background: The Eversense CGM System sensor is implanted in the upper arm. It uses a fluorescent, boronic acid glucose-binding moiety to measure glucose. The glucose indicator is susceptible to oxidative de-boronation from reactive oxygen species (RO
Autor:
Beat Schwaller, Daniel Vela-Duarte, Herman Moreno, James M. Masciotti, Fan Hua, Nesha S. Burghardt, Scott A. Small, André A. Fenton
Publikováno v:
Hippocampus
Although reductions in the expression of the calcium-buffering proteins calbindin D-28K (CB) and parvalbumin (PV) have been observed in the aging brain, it is unknown whether these changes contribute to age-related hippocampal dysfunction. To address
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 57:182-189
We introduce a novel digital lock-in detection technique for simultaneously measuring the amplitude and phase of multiple amplitude-modulated signals. Using particular modulation and sampling constraints and averaging filters, we achieve optimal nois
Publikováno v:
SPIE Proceedings.
Computational speed and available memory size on a single processor are two limiting factors when using the frequency-domain equation of radiative transport (FD-ERT) as a forward and inverse model to reconstruct three-dimensional (3D) tomographic ima
Publikováno v:
SPIE Proceedings.
We present an instrument for simultaneous imaging of the rodent brain with frequency-domain optical tomography and magnetic resonance imaging. The instrument uses a custom-built fiber optic probe that allows for measurements in backreflectance geomet
Development of a dynamic optical tomographic breast imaging system with digital detection techniques
Autor:
James M. Masciotti, Rabah M. Al abdi, Randall L. Barbour, Alisha Ling, Andreas H. Hielscher, Michael A. Khalil, Molly Lara Flexman
Publikováno v:
SPIE Proceedings.
Breast cancer characteristics such as angiogenesis and hypoxia can be quantified by using optical tomography imaging to observe the hemodynamic response to an external stimulus. A digital near-infrared tomography system has been developed specificall
Autor:
James M. Masciotti, Molly Lara Flexman, Rabah M. Al abdi, Christopher J. Fong, Andreas H. Hielscher, Yang Li, Randall L. Barbour, Andrés M. Bur
Publikováno v:
Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference. 2008
Optical imaging has the potential to play a major role in breast cancer screening and diagnosis due to its ability to image cancer characteristics such as angiogenesis and hypoxia. A promising approach to evaluate and quantify these characteristics i
Publikováno v:
Biomedical Optics.
We present a frequency domain optical tomography instrument for imaging small geometries. The instrument employs modulation frequencies up to 1 GHz which allows yields better separation of absorption and scattering and more accurate reconstructions.
Publikováno v:
Biomedical Optics.
We introduce a transport-theory multi-spectral inverse method for direct recovery of the chromphores concentrations inside tissues. Numerical and experimental results show that the direct method produces more accurate results than the conventional ap
Publikováno v:
EMBC
Digital lock-in detection provides spectroscopic and imaging instruments a means of measuring physical quantities with improved signal to noise ratios compared to analogue detection schemes. We introduce a digital lock-in detection algorithm for meas