Aperture domain model image reconstruction (ADMIRE) with plane wave synthesis

Kazuyuki Dei; Jaime Tierney; Brett Byram

doi:10.1117/12.2255526

13 March 2017 Aperture domain model image reconstruction (ADMIRE) with plane wave synthesis

Kazuyuki Dei, Jaime Tierney, Brett Byram

Proceedings Volume 10139, Medical Imaging 2017: Ultrasonic Imaging and Tomography; 1013911 (2017) https://doi.org/10.1117/12.2255526
Event: SPIE Medical Imaging, 2017, Orlando, Florida, United States

Abstract

In our previous studies, we demonstrated that our aperture domain model-based clutter suppression algorithm improved image quality of in vivo B-mode data obtained from focused transmit beam sequences. Our approach suppresses off-axis clutter and reverberation and tackles limitations of related algorithms because it preserves RF channel signals and speckle statistics. We call the algorithm aperture domain model image reconstruction (ADMIRE). We previously focused on reverberation suppression, but ADMIRE is also effective at suppressing off-axis clutter. We are interested in how ADMIRE performs on plane wave sequences and the impact of AD- MIRE applied before and after synthetic beamforming of steered plane wave sequences. We employed simulated phantoms using Field II and tissue-mimicking phantoms to evaluate ADMIRE applied to plane wave sequencing. We generated images acquired from plane waves with and without synthetic aperture synthesis and measured contrast and contrast-to-noise ratio (CNR). For simulated cyst images formed from single plane waves, the contrast for delay-and-sum (DAS) and ADMIRE are 15.64 dB and 28.34 dB, respectively, while the CNR are 1.76 dB and 3.90 dB, respectively. Based on these findings, ADMIRE improves plane wave image quality. We also applied ADMIRE to resolution phantoms having a point target at 3 cm depth on-axis, simulating the point spread functions from data obtained from 1 and 75 steered plane waves, along with linear scan at focus of 3 and 4 cm depth. We then examined the outcome of applying ADMIRE before and after synthetic aperture processing. Finally, we applied this to an in vivo carotid artery.

Conference Presentation

Citation Download Citation

Kazuyuki Dei, Jaime Tierney, and Brett Byram "Aperture domain model image reconstruction (ADMIRE) with plane wave synthesis", Proc. SPIE 10139, Medical Imaging 2017: Ultrasonic Imaging and Tomography, 1013911 (13 March 2017); https://doi.org/10.1117/12.2255526

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