@inproceedings{411a9a79d1a84410a9939e156bd3eaa6,
title = "Coded Excitation in 3D Ultrasound Imaging with a Lensed Row-Column Array",
abstract = "Row-column (RC) arrays in volumetric imaging present a potential alternative to typical matrix arrays due to their fewer electrical connections. However, these probes have a limited field of view (FOV), which is rectangular and equal to the probe{\textquoteright}s footprint. Using a diverging lens can expand the FOV, but the lens causes wave attenuation, which decreases the signal-to-noise ratio (SNR) and the penetration depth of the probe. This paper hypothesizes that incorporating a lens and coded excitation (CE) can maintain a larger field of view (FOV) in 3D ultrasound imaging while enhancing the signal-to-noise ratio (SNR) and penetration depth. A chirp signal with a center frequency of 6 MHz, a bandwidth of 4 MHz, and a duration of 5 μs was used to evaluate the proposed method. The SNR measured from a cyst phantom increased by approximately 10 dB when using CE compared to single sinusoid excitation. This improvement is comparable to the 8 dB attenuation introduced by the lens. Consequently, the penetration depth improved by around 100λ while preserving the increased FOV provided by the lens.",
keywords = "3D ultrasound imaging, Row-column array, Lenses, Beamforming, Field of view, Coded excitation",
author = "Ali Salari and Bhatti, {Mudabbir Tufail} and M{\'e}lanie Audoin and Tomov, {Borislav Gueorguiev} and Billy Yiu and Thomsen, {Erik Vilain} and Jensen, {J{\o}rgen Arendt}",
year = "2025",
doi = "10.1117/12.3047212",
language = "English",
volume = "13412",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE - International Society for Optical Engineering",
booktitle = "Proceedings of SPIE",
note = "SPIE Medical Imaging 2025 ; Conference date: 16-02-2025 Through 20-02-2025",
}