Research on magneto-acoustic-electrical tomography method based on liquid metal contrast agent and M sequence coded excitation / 生物医学工程学杂志
Journal of Biomedical Engineering
; (6): 718-724, 2023.
Article
in Chinese
| WPRIM (Western Pacific)
| ID: wpr-1008892
Responsible library:
WPRO
ABSTRACT
Magneto-acoustic-electric tomography (MAET) boasts high resolution in ultrasound imaging and high contrast in electrical impedance imaging, making it of significant research value in the fields of early tumor diagnosis and bioelectrical monitoring. In this study, a method was proposed that combined high conductivity liquid metal and maximum length sequence (M sequence) coded excitation to improve the signal-to-noise ratio. It was shown that, under rotational scanning, the liquid metal significantly improved the signal-to-noise ratio of the inter-tissue magneto-acoustic-electric signal and enhanced the quality of the reconstructed image. The signal-to-noise ratio of the signal was increased by 5.6, 11.1, 21.7, and 45.7 times under the excitation of 7-, 15-, 31-, and 63-bit M sequence code, respectively. The total usage time of 31-bit M sequence coded excitation imaging was shortened by 75.6% compared with single-pulse excitation when the same signal-to-noise ratio was improved. In conclusion, the imaging method combining liquid metal and M-sequence coding excitation has positive significance for improving MAET image quality.
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Acoustics
/
Tomography
/
Contrast Media
/
Electric Conductivity
/
Electricity
Language:
Chinese
Journal:
Journal of Biomedical Engineering
Year:
2023
Document type:
Article