PUBLICATION

Monitoring of Adult Zebrafish Heart Regeneration Using High-Frequency Ultrasound Spectral Doppler and Nakagami Imaging

Authors
Yeo, S., Yoon, C., Lien, C.L., Song, T.K., Shung, K.K.
ID
ZDB-PUB-190925-2
Date
2019
Source
Sensors (Basel, Switzerland)   19(19): (Journal)
Registered Authors
Lien, Ching-Ling (Ellen)
Keywords
Nakagami imaging, high-frequency ultrasound, spectral Doppler, zebrafish
MeSH Terms
  • Animals
  • Heart/physiology*
  • Image Enhancement
  • Regeneration/physiology*
  • Ultrasonography/methods*
  • Zebrafish
PubMed
31546705 Full text @ Sensors (Basel)
Abstract
This paper reports the feasibility of Nakagami imaging in monitoring the regeneration process of zebrafish hearts in a noninvasive manner. In addition, spectral Doppler waveforms that are typically used to access the diastolic function were measured to validate the performance of Nakagami imaging. A 30-MHz high-frequency ultrasound array transducer was used to acquire backscattered echo signal for spectral Doppler and Nakagami imaging. The performances of both methods were validated with flow and tissue-mimicking phantom experiments. For in vivo experiments, both spectral Doppler and Nakagami imaging were simultaneously obtained from adult zebrafish with amputated hearts. Longitudinal measurements were performed for five zebrafish. From the experiments, the E/A ratio measured using spectral Doppler imaging increased at 3 days post-amputation (3 dpa) and then decreased to the value before amputation, which were consistent with previous studies. Similar results were obtained from the Nakagami imaging where the Nakagami parameter value increased at 3 dpa and decreased to its original value. These results suggested that the Nakagami and spectral Doppler imaging would be useful techniques in monitoring the regeneration of heart or tissues.
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