A digital multigate doppler method for high frequency ultrasound

Weibao Qiu; Zongying Ye; Yanyan Yu; Yan Chen; Liyang Chi; Peitian Mu; Guofeng Li; Congzhi Wang; Yang Xiao; Jiyan Dai; Lei Sun; Hairong Zheng

doi:10.3390/s140813348

A digital multigate doppler method for high frequency ultrasound

Weibao Qiu, Zongying Ye, Yanyan Yu, Yan Chen, Liyang Chi, Peitian Mu, Guofeng Li, Congzhi Wang, Yang Xiao, Jiyan Dai, Lei Sun, Hairong Zheng

Department of Electrical Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

3 Citations (Scopus)

3 Downloads (CityUHK Scholars)

Abstract

Noninvasive visualization of blood flow with high frequency Doppler ultrasound has been extensively used to assess the morphology and hemodynamics of the microcirculation. A completely digital implementation of multigate pulsed-wave (PW) Doppler method was proposed in this paper for high frequency ultrasound applications. Analog mixer was eliminated by a digital demodulator and the same data acquisition path was shared with traditional B-mode imaging which made the design compact and flexible. Hilbert transform based quadrature demodulation scheme was employed to achieve the multigate Doppler acquisition. A programmable high frequency ultrasound platform was also proposed to facilitate the multigate flow visualization. Experimental results showed good performance of the proposed method. Parabolic velocity gradient inside the vessel and velocity profile with different time slots were acquired to demonstrate the functionality of the multigate Doppler. Slow wall motion was also recorded by the proposed method. © 2014 by the authors; licensee MDPI, Basel, Switzerland.

Original language	English
Pages (from-to)	13348-13360
Journal	Sensors (Switzerland)
Volume	14
Issue number	8
DOIs	https://doi.org/10.3390/s140813348
Publication status	Published - 24 Jul 2014

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to <a href="mailto:[email protected]">[email protected]</a>.

Funding

The work has been supported by National Science Foundation Grants (NSFC Grant Nos. 61302038, 11325420, 61302039, 11272329, and 61372026), National key Basic Research Program of China (973 Program, Grant No. 2013CB632900), The Hong Kong Polytechnic University (Grant Nos. A-PM01 and G-YK86). Guangdong Innovative Team Program (No. 2013S046), and Shenzhen Peacock Plan.

Research Keywords

Digital quadrature demodulation
Flow visualization
High frequency ultrasound
Multigate PW doppler

Publisher's Copyright Statement

This full text is made available under CC-BY 3.0. https://creativecommons.org/licenses/by/3.0/

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T1 - A digital multigate doppler method for high frequency ultrasound

AU - Qiu, Weibao

AU - Ye, Zongying

AU - Yu, Yanyan

AU - Chen, Yan

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AU - Mu, Peitian

AU - Li, Guofeng

AU - Wang, Congzhi

AU - Xiao, Yang

AU - Dai, Jiyan

AU - Sun, Lei

AU - Zheng, Hairong

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N2 - Noninvasive visualization of blood flow with high frequency Doppler ultrasound has been extensively used to assess the morphology and hemodynamics of the microcirculation. A completely digital implementation of multigate pulsed-wave (PW) Doppler method was proposed in this paper for high frequency ultrasound applications. Analog mixer was eliminated by a digital demodulator and the same data acquisition path was shared with traditional B-mode imaging which made the design compact and flexible. Hilbert transform based quadrature demodulation scheme was employed to achieve the multigate Doppler acquisition. A programmable high frequency ultrasound platform was also proposed to facilitate the multigate flow visualization. Experimental results showed good performance of the proposed method. Parabolic velocity gradient inside the vessel and velocity profile with different time slots were acquired to demonstrate the functionality of the multigate Doppler. Slow wall motion was also recorded by the proposed method. © 2014 by the authors; licensee MDPI, Basel, Switzerland.

AB - Noninvasive visualization of blood flow with high frequency Doppler ultrasound has been extensively used to assess the morphology and hemodynamics of the microcirculation. A completely digital implementation of multigate pulsed-wave (PW) Doppler method was proposed in this paper for high frequency ultrasound applications. Analog mixer was eliminated by a digital demodulator and the same data acquisition path was shared with traditional B-mode imaging which made the design compact and flexible. Hilbert transform based quadrature demodulation scheme was employed to achieve the multigate Doppler acquisition. A programmable high frequency ultrasound platform was also proposed to facilitate the multigate flow visualization. Experimental results showed good performance of the proposed method. Parabolic velocity gradient inside the vessel and velocity profile with different time slots were acquired to demonstrate the functionality of the multigate Doppler. Slow wall motion was also recorded by the proposed method. © 2014 by the authors; licensee MDPI, Basel, Switzerland.

KW - Digital quadrature demodulation

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KW - High frequency ultrasound

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A digital multigate doppler method for high frequency ultrasound

Abstract

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Research Keywords

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