Improving photoacoustic-imaging axial positioning accuracy and signal-to-noise ratio using acoustic echo effect

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Wenxiu Zhao
  • Haibo Yu
  • Yangdong Wen
  • Pan Li
  • Xiaoduo Wang
  • Feifei Wang
  • Yang Yang
  • Lianqing Liu

Detail(s)

Original languageEnglish
Article number112788
Journal / PublicationSensors and Actuators, A: Physical
Volume329
Online published27 Apr 2021
Publication statusPublished - 1 Oct 2021

Abstract

We have developed a method to improve the performance of photoacoustic (PA) imaging technique by applying the acoustic echo effect. By superimposing the main and echo ultrasound signals, the axial positioning accuracy of a PA imaging system could be improved by 100 % and the signal-to-noise ratio (SNR) could be enhanced by ∼2.8 dB experimentally. Using a multiwall carbon nanotubes composite structure as a sample, the occurrence conditions and properties of the echo signals were discussed. Theoretically, the SNR could be increased within a working distance of ∼3.9 mm when water is used as the medium. Moreover, we found that PA images of red blood cells could also be enhanced by this method.

Research Area(s)

  • Distance accuracy, Echo effect, Photoacoustic, Signal-to-noise ratio

Citation Format(s)

Improving photoacoustic-imaging axial positioning accuracy and signal-to-noise ratio using acoustic echo effect. / Zhao, Wenxiu; Yu, Haibo; Wen, Yangdong; Li, Pan; Wang, Xiaoduo; Wang, Feifei; Yang, Yang; Liu, Lianqing; Li, Wen Jung.

In: Sensors and Actuators, A: Physical, Vol. 329, 112788, 01.10.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review