Real-time Implementation of Synthetic Aperture Vector Flow Imaging on a Consumer-level Tablet

Tommaso di Ianni, Thomas Kim Kjeldsen, Carlos Armando Villagómez Hoyos, Jesper Mosegaard, Jørgen Arendt Jensen

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In this work, a 2-D vector flow imaging (VFI) method based on synthetic aperture sequential beamforming (SASB) and directional transverse oscillation is implemented on a commercially available tablet. The SASB technique divides the beamforming process in two parts, whereby the required data rate between the probe and back-end can be reduced by a factor of 64 compared to conventional delay-and-sum focusing. The lowered data rate enables real-time wireless transfer for both B-mode and VFI data. In the present setup, element data were acquired from a straight vessel with the SARUS research scanner and processed by a first-stage beamformer in a fixed focus. The data were subsequently transferred to an HTC Nexus 9 tablet through an ASUS RT-AC68U Wi-Fi router to simulate a wireless probe. The second-stage beamforming of the B-mode and flow data and the velocity estimation were implemented on the tablet’s built-in GPU (Nvidia Tegra K1) through the OpenGL ES 3.1 API. Real-time performance was achieved with rates up to 26 VFI frames per second (38 ms/frame) for concurrent processing and Wi-Fi transmission.
Original languageEnglish
Title of host publicationProceedings of 2017 IEEE International Ultrasonics Symposium (IUS)
Number of pages4
Publication date2017
ISBN (Print)9781538633830
Publication statusPublished - 2017
Event2017 IEEE International Ultrasonics Symposium (IUS) - Omni Shoreham Hotel, Washington, United States
Duration: 6 Sep 20179 Sep 2017


Conference2017 IEEE International Ultrasonics Symposium (IUS)
LocationOmni Shoreham Hotel
CountryUnited States
Internet address

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