Resonance phenomena in a time-dependent, three-dimensional model of an idealized eddy

2015 ◽  
Vol 25 (8) ◽  
pp. 087401 ◽  
Author(s):  
I. I. Rypina ◽  
L. J. Pratt ◽  
P. Wang ◽  
T. M. Özgökmen ◽  
I. Mezic
Keyword(s):  
Three Dimensional ◽  
Time Dependent ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Resonance Phenomena

A Three Dimensional Model for Generating the Texture in B-Scan Ultrasound Images

1983 ◽  
Vol 5 (3) ◽  
pp. 253-279 ◽  
Author(s):  
Mitchell M. Goodsitt ◽  
Ernest L. Madsen ◽  
James A. Zagzebski
Keyword(s):  
Three Dimensional ◽  
Time Dependent ◽  
Ultrasound Images ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Gray Scale ◽  
Receiver System ◽  
Gray Scale Image ◽  
Theory And Experiment ◽  
Good Agreement

A three-dimensional model for production of gray scale texture in ultrasound B-mode images is described. The model computes time-dependent echo signals resulting from scattering of acoustic pulses by particles randomly distributed in an attenuating medium and transforms these signals into a gray scale image. Specific transducer and pulser-receiver characteristics are accounted for, as well as the three-dimensional nature of the problem, without loss of computational efficiency. The model generates texture that closely corresponds to that found experimentally in ultrasound images of tissue-mimicking phantoms. The dependence of the texture upon the depth of the region that was scanned and on the characteristics of the transducer-receiver system were clearly demonstrated. Good agreement between theory and experiment was found for the texture in phantoms containing simulated spherical low-scatter tumors.

scholarly journals JIM: A time-dependent, three-dimensional model of Jupiter's thermosphere and ionosphere

1998 ◽  
Vol 103 (E9) ◽  
pp. 20089-20112 ◽  
Author(s):  
N. Achilleos ◽  
S. Miller ◽  
J. Tennyson ◽  
A. D. Aylward ◽  
I. Mueller-Wodarg ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Time Dependent ◽  
Dimensional Model ◽  
Three Dimensional Model

Three-Dimensional Model for Virtual Surgical Simulation, during Complex Skull Base Surgery and Aneurysm Surgery

Skull Base ◽  
2008 ◽  
Vol 18 (S 01) ◽  
Author(s):  
Akio Morita ◽  
Toshikazu Kimura ◽  
Shigeo Sora ◽  
Kengo Nishimura ◽  
Hisayuki Sugiyama ◽  
...  
Keyword(s):  
Skull Base ◽  
Surgical Simulation ◽  
Skull Base Surgery ◽  
Three Dimensional ◽  
Aneurysm Surgery ◽  
Dimensional Model ◽  
Three Dimensional Model
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