Improve the resolution of Temporal Averaging Minimum Variance by Sign Coherence Factor: application in photoacoustic imaging
Publish place: International Journal of Mechatronics, Electrical and Computer Technology، Vol: 12، Issue: 45
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJMEC-12-45_005
تاریخ نمایه سازی: 14 آذر 1402
Abstract:
Photoacoustic (PA) imaging combining the advantages of high resolution of ultrasound imaging and high contrast of optical imaging provides images with good quality. PA imaging often suffers from disadvantages such as clutter noises and decreased signal-to-noise ratio at higher depths. In order to reconstruct an image, Delay-and-Sum (DAS) beamformer is commonly used due to its simplicity and higher robustness compared to other beamformers. However, this beam former's resolution and side lobes rejection are not adequate; in order to address this predicament adaptive beamformer can be used. We used Temporal Averaging Minimum Variance (TAMV) beamformer, which leads to high resolution in this work. Nevertheless, this beamformer could not deter sidelobes. Therefore, Sign Coherence Factor (SCF) was combined with the TAMV beamformer to boost resolution and reject sidelobes.
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Authors
Kian Esmailian
Tehran, Iran