Estimation of the Dynamic Focused Ultrasound Radiation Force Generated by an Ultrasonic Transducer

2017 ◽  
pp. 15-22
Author(s):  
Songmao Chen ◽  
Alessandro Sabato ◽  
Christopher Niezrecki
Keyword(s):  
Focused Ultrasound ◽  
Ultrasonic Transducer ◽  
Radiation Force ◽  
Ultrasound Radiation

Modeling and estimation of focused ultrasound radiation force for modal excitation

2017 ◽  
Vol 141 (5) ◽  
pp. 3575-3575 ◽  
Author(s):  
Songmao Chen ◽  
Christopher Niezrecki ◽  
Alessandro Sabato ◽  
Peter Avitabile
Keyword(s):  
Focused Ultrasound ◽  
Radiation Force ◽  
Ultrasound Radiation

scholarly journals Excitation of Vibrational Eigenstates of Coupled Microcantilevers Using Ultrasound Radiation Force

2008 ◽  
Author(s):  
Thomas M. Huber ◽  
Eric T. Ofstad ◽  
Samuel M. Barthell ◽  
Arvind Raman ◽  
Matthew Spletzer
Keyword(s):  
Scanning Probe Microscopy ◽  
Focused Ultrasound ◽  
Laser Doppler Vibrometer ◽  
Radiation Force ◽  
Transverse Mode ◽  
Scanning Probe ◽  
Ultrasound Transducer ◽  
Resonance Frequencies ◽  
Ultrasound Radiation ◽  
The Difference

A coupled pair of 500 μm length microcantilevers was excited using the ultrasound radiation force. The excitation was produced using the difference frequency between the two sidebands of a double-sideband suppressed carrier AM (DSB-SC-AM) waveform centered on 500 kHz that was emitted by a focused ultrasound transducer. A laser Doppler vibrometer measured the frequency response and deflection shapes of the cantilever pair. The measured frequencies of the symmetric and antisymmetric eigenstates of the first transverse mode at 10 kHz excited using the ultrasound radiation force were consistent with frequencies measured using a scanning-probe microscopy system. The ultrasound radiation force was also used to excite the symmetric and antisymmetric eigenstates of the 60 kHz second transverse and 86 kHz first torsional modes. These results demonstrate the capability of using the ultrasound radiation force for excitation of structures in air that are significantly smaller, and with higher resonance frequencies, than in any previous study.

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 Measurement and modeling of acoustic radiation force of focused ultrasound beam on an elastic sphere in water

2017 ◽  
Author(s):  
Maria Karzova ◽  
Anastasia Nikolaeva ◽  
Sergey Tsysar ◽  
Vera Khokhlova ◽  
Oleg Sapozhnikov
Keyword(s):  
Focused Ultrasound ◽  
Acoustic Radiation ◽  
Radiation Force ◽  
Acoustic Radiation Force ◽  
Elastic Sphere ◽  
Ultrasound Beam
Sign in / Sign up

Export Citation Format

Share Document