Name
Abstract | ||
|---|---|---|
Synthetic aperture sequential beamforming (SASB) is a technique to achieve range-independent resolution in 2D images with lower computational complexity compared to synthetic aperture ultrasound (SAU). It is a two stage process, wherein the first stage performs fixed-focus beamforming followed by dynamic-focus beamforming in the second stage. In this work, we extend SASB to 3D imaging and propose two schemes to reduce its complexity:(1) reducing the number of elements in both transmit and receive and (2) implementing separable beamforming in the second stage. Our Field-II simulations demonstrate that reducing transmit and receive apertures to 32×32 and 16×16 elements, respectively, and using separable beamforming reduces 3D SASB computational complexity by 15× compared to the 64×64 aperture case with almost no loss in image quality. We also describe a hardware architecture for 3D SASB that performs first-stage beamforming in the scan head, reducing the amount of data that must be transferred for offchip processing in the second stage beamformer by up to 256×. We describe an implementation approach for the second stage that performs an optimized in-place update for both steps of separable beamforming and is well suited for GPU. |
Year | DOI | Venue |
|---|---|---|
2016 | 10.1109/SiPS.2016.14 | 2016 IEEE International Workshop on Signal Processing Systems (SiPS) |
Keywords | Field | DocType |
SASB,Medical Ultrasound,Synthetic Aperture | Synthetic aperture radar,Computer science,Image quality,Separable space,Real-time computing,Artificial intelligence,Computer hardware,3D ultrasound,Aperture,Beamforming,Computer vision,Computational complexity theory,Hardware architecture | Conference |
ISBN | Citations | PageRank |
978-1-5090-3362-1 | 0 | 0.34 |
References | Authors | |
3 | 9 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jian Zhou | 1 | 10 | 10.43 |
| Siyuan Wei | 2 | 30 | 5.91 |
| Richard Sampson | 3 | 34 | 6.01 |
| Ming Yang | 4 | 30 | 5.23 |
| Rungroj Jintamethasawat | 5 | 0 | 0.68 |
| Oliver Kripfgans | 6 | 1 | 2.12 |
| J. Brian Fowlkes | 7 | 51 | 6.71 |
| Thomas F. Wenisch | 8 | 2112 | 105.25 |
| Chaitali Chakrabarti | 9 | 1978 | 184.17 |