Multifrequency ultrasound radiation force excitation and motion detection of harmonically vibrating scatterers

2008 ◽  
Vol 123 (2) ◽  
pp. 581-581
Author(s):  
Matthew W. Urban
Keyword(s):  
Motion Detection ◽  
Radiation Force ◽  
Ultrasound Radiation ◽  
Force Excitation

Orthogonal Frequency Ultrasound Vibrometry

2010 ◽  
Author(s):  
Yi Zheng ◽  
Aiping Yao ◽  
Shigao Chen ◽  
Matthew W. Urban ◽  
Randy Kinnick ◽  
...  
Keyword(s):  
Wave Amplitude ◽  
Radiation Force ◽  
Sinusoidal Signal ◽  
Frequency Wave ◽  
Array Transducer ◽  
Ultrasound Radiation ◽  
Ultrasound Intensity ◽  
Tissue Region ◽  
Sinusoidal Signals ◽  
Frequency Ultrasound

New vibration pulses are proposed to increase the power of shear waves induced by ultrasound radiation force in a tissue region with a preferred spectral distribution. The new pulses are sparsely sampled from an orthogonal frequency wave composed of several sinusoidal signals. Those sinusoidal signals have different frequencies and are orthogonal to each other. The phase and amplitude of each sinusoidal signal are adjusted to control the shape of the orthogonal frequency wave. Amplitude of the sinusoidal signal is increased as its frequency increases to compensate for higher loss at higher frequency in the tissue region. The new vibration pulses and detection pulses can be interleaved for array transducer applications. The experimental results show that the new vibration pulses significantly increases induced tissue vibration with the same peak ultrasound intensity, compared with the binary vibration pulses.

Chirp excitation technique to enhance microbubble displacement induced by ultrasound radiation force

2009 ◽  
Vol 125 (3) ◽  
pp. 1410-1415 ◽  
Author(s):  
Yi Hu ◽  
Dong Zhang ◽  
Hairong Zheng ◽  
Xiufen Gong
Keyword(s):  
Radiation Force ◽  
Ultrasound Radiation

Temporal analysis of tissue displacement induced by a transient ultrasound radiation force

2005 ◽  
Vol 118 (5) ◽  
pp. 2829-2840 ◽  
Author(s):  
Samuel Callé ◽  
Jean-Pierre Remenieras ◽  
Olivier Bou Matar ◽  
Melouka Elkateb Hachemi ◽  
Frédéric Patat
Keyword(s):  
Radiation Force ◽  
Temporal Analysis ◽  
Ultrasound Radiation

scholarly journals Ultrasound radiation force enables targeted deposition of model drug carriers loaded on microbubbles

2006 ◽  
Vol 111 (1-2) ◽  
pp. 128-134 ◽  
Author(s):  
Aaron F.H. Lum ◽  
Mark A. Borden ◽  
Paul A. Dayton ◽  
Dustin E. Kruse ◽  
Scott I. Simon ◽  
...  
Keyword(s):  
Radiation Force ◽  
Drug Carriers ◽  
Ultrasound Radiation ◽  
Model Drug

Viscoelastic response of cylindrical vessels surrounded by gelatin and excited using impulsive ultrasound radiation force.

2008 ◽  
Vol 124 (4) ◽  
pp. 2445-2445
Author(s):  
Matthew Urban ◽  
Daniel Rosario ◽  
Miguel Bernal ◽  
Wilkins Aquino ◽  
James Greenleaf
Keyword(s):  
Radiation Force ◽  
Viscoelastic Response ◽  
Ultrasound Radiation
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