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pro vyhledávání: '"Pedro C. Nariyoshi"'
Autor:
Pedro C. Nariyoshi, J.R. Deller, Jr.
Publikováno v:
Neuroscience Informatics, Vol 1, Iss 1, Pp 100001- (2021)
New causality (NC) is a relatively recent method for inferring causal relationships between time-series data. Similar to other popular causal inference methods, like Granger causality (GC), NC can be evaluated in time or frequency domain. NC derives
Externí odkaz:
https://doaj.org/article/6bcdca33cd5149e0b8ed61fa555b378c
Autor:
Robert J. McGough, Pedro C. Nariyoshi
Publikováno v:
2014 IEEE International Ultrasonics Symposium.
Models for pulse-echo simulations use a distribution of point scatterers to generate realistic computer phantoms. In these simulations, the contribution from a pair of transmit-receive transducer elements evaluated at a single scatterer produces the
Publikováno v:
2013 IEEE International Ultrasonics Symposium (IUS).
Present ultrasound imaging simulations rely on pulse-echoes from amplitude-weighted point scatterer models rather than a model based on wave propagation. Aberration has been most often modeled as a phase screen adjacent to the aperture rather than as
Autor:
Robert J. McGough, Pedro C. Nariyoshi
Publikováno v:
The Journal of the Acoustical Society of America. 136:2125-2125
Routines are under development in FOCUS, the “Fast Object-oriented C + + Ultrasound Simulator” (http://www.egr.msu.edu/~fultras-web), to accelerate B-mode image simulations by combining the fast nearfield method with time-space decomposition. The
Autor:
Robert J. McGough, Pedro C. Nariyoshi
Publikováno v:
The Journal of the Acoustical Society of America. 135:2372-2372
Diagnostic ultrasound simulations are presently under development for FOCUS (http://www.egr.msu.edu/~fultras-web). To reduce the computation time without increasing the numerical error, each signal in FOCUS is calculated once, stored, and then the ef
Autor:
Robert J. McGough, Pedro C. Nariyoshi
Publikováno v:
The Journal of the Acoustical Society of America. 133:3457-3457
Calculations of the transient radiation pattern in the farfield of rectangular transducers often employ the impulse response of the velocity potential. Analytical expressions for the impulse response are known for lossless media, and similar expressi