Quasi-monopolar Ultrasound Pulse by Stack-layer Dual-frequency Ultrasound Transducer

Monopolar ultrasound pulse holds significant potential for high-resolution imaging and harmonic imaging. Here, we propose to generate a quasi-monopolar ultrasound pulse by superposition of two ultrasound signals from a stack-layer dual-frequency ultrasound transducer (1MHz / 3MHz). The experimental...

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Bibliographic Details
Published in:	2021 IEEE International Ultrasonics Symposium (IUS) pp. 1 - 3
Main Authors:	Cai, Yiqi, Song, Shuqi, Xu, Liiun, Ma, Jianguo
Format:	Conference Proceeding
Language:	English
Published:	IEEE 11-09-2021
Subjects:	Acoustics Delays dual-frequency ultrasound transducer Harmonic analysis High-resolution imaging monopolar ultrasound pulse Signal resolution superposition Transducers Ultrasonic imaging
Online Access:	Get full text
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Summary:	Monopolar ultrasound pulse holds significant potential for high-resolution imaging and harmonic imaging. Here, we propose to generate a quasi-monopolar ultrasound pulse by superposition of two ultrasound signals from a stack-layer dual-frequency ultrasound transducer (1MHz / 3MHz). The experimental -6 dB pulse width of the negative pressure was 138 ns, indicating a sub-wavelength resolution imaging. Meanwhile, the ratio of the peak negative pressure and the peak positive pressure was 3.69, a highly beneficial property for super-harmonic ultrasound imaging. The quasi-monopolar and short pulse may enable advanced biomedical ultrasound imaging with high contrast and sub-wavelength resolution.
ISSN:	1948-5727
DOI:	10.1109/IUS52206.2021.9593889