Implementation of synthetic aperture imaging on a hand-held device

Martin Christian Hemmsen[1], Thomas Kjeldsen[2], Lee Lassen[2], Carsten Kjær[3], Borislav Tomov[1], Jesper Mosegaard[2], and Jørgen Arendt Jensen[1]

[1] Dept. of Elec. Eng. Tech., Univ. of Denmark, Lyngby, Denmark
[2] Alexandra Institute, Aarhus N, Denmark
[3] BK Medical, Herlev, Denmark

Ultrasonics Symposium (IUS), 2014 IEEE International, 2177 – 2180 (2014)


This paper presents several implementations of Synthetic Aperture Sequential Beamforming (SASB) on commercially available hand-held devices. The implementations include real-time wireless reception of ultrasound radio frequency signals and GPU processing for B-mode imaging. The proposed implementation demonstrates that SASB can be executed in-time for real-time ultrasound imaging. The wireless communication between probe and processing device satisfies the required bandwidth for real-time data transfer with current 802.11ac technology. The implementation is evaluated using four different hand-held devices all with different chipsets and a BK Medical UltraView 800 ultrasound scanner emulating a wireless probe. The wireless transmission is benchmarked using an imaging setup consisting of 269 scan lines × 1472 complex samples (1.58 MB pr. frame, 16 frames per second). The measured data throughput reached an average of 28.8 MB/s using a LG G2 mobile device, which is more than the required data throughput of 25.3 MB/s. Benchmarking the processing performance for B-mode imaging showed a total processing time of 18.9 ms (53 frames/s), which is less than the acquisition time (62.5 ms).