Comparison of Simulated and Measured Non-linear Ultrasound Fields
Publication: Research - peer-review › Article in proceedings – Annual report year: 2011
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Comparison of Simulated and Measured Non-linear Ultrasound Fields. / Du, Yigang; Jensen, Henrik; Jensen, Jørgen Arendt.
In: Proceedings of SPIE. ed. / Jan D'hooge; Marvin M. Doyley. Vol. 7968 SPIE - International Society for Optical Engineering, 2011.Publication: Research - peer-review › Article in proceedings – Annual report year: 2011
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TY - GEN
T1 - Comparison of Simulated and Measured Non-linear Ultrasound Fields
A1 - Du,Yigang
A1 - Jensen,Henrik
A1 - Jensen,Jørgen Arendt
AU - Du,Yigang
AU - Jensen,Henrik
AU - Jensen,Jørgen Arendt
PB - SPIE - International Society for Optical Engineering
PY - 2011
Y1 - 2011
N2 - In this paper results from a non-linear AS (angular spectrum) based ultrasound simulation program are compared to water-tank measurements. A circular concave transducer with a diameter of 1 inch (25.4 mm) is used as the emitting source. The measured pulses are rst compared with the linear simulation program Field II, which will be used to generate the source for the AS simulation. The generated non-linear ultrasound eld is measured by a hydrophone in the focal plane. The second harmonic component from the measurement is compared with the AS simulation, which is used to calculate both fundamental and second harmonic elds. The focused piston transducer with a center frequency of 5 MHz is excited by a waveform generator emitting a 6-cycle sine wave. The hydrophone is mounted in the focal plane 118 mm from the transducer. The point spread functions at the focal depth from Field II and measurements are illustrated. The FWHM (full width at half maximum) values are 1.96 mm for the measurement and 1.84 mm for the Field II simulation. The fundamental and second harmonic components of the experimental results are plotted compared with the AS simulations. The RMS (root mean square) errors of the AS simulations are 7.19% and 10.3% compared with the fundamental and second harmonic components of the measurements.
AB - In this paper results from a non-linear AS (angular spectrum) based ultrasound simulation program are compared to water-tank measurements. A circular concave transducer with a diameter of 1 inch (25.4 mm) is used as the emitting source. The measured pulses are rst compared with the linear simulation program Field II, which will be used to generate the source for the AS simulation. The generated non-linear ultrasound eld is measured by a hydrophone in the focal plane. The second harmonic component from the measurement is compared with the AS simulation, which is used to calculate both fundamental and second harmonic elds. The focused piston transducer with a center frequency of 5 MHz is excited by a waveform generator emitting a 6-cycle sine wave. The hydrophone is mounted in the focal plane 118 mm from the transducer. The point spread functions at the focal depth from Field II and measurements are illustrated. The FWHM (full width at half maximum) values are 1.96 mm for the measurement and 1.84 mm for the Field II simulation. The fundamental and second harmonic components of the experimental results are plotted compared with the AS simulations. The RMS (root mean square) errors of the AS simulations are 7.19% and 10.3% compared with the fundamental and second harmonic components of the measurements.
KW - Concave transducer
KW - Water-tank measurement
KW - Non-linear ultrasound simulation
KW - Angular spectrum
U2 - 10.1117/12.877350
DO - 10.1117/12.877350
SN - 9780819485106
VL - 7968
BT - Proceedings of SPIE
T2 - Proceedings of SPIE
A2 - Doyley,Marvin M.
ED - Doyley,Marvin M.
ER -