Abstract
Modern ultrasound scanners utilize digital beamformers
that operate on sampled and quantized echo signals.
Timing precision is of essence for achieving good focusing. The
direct way to achieve it is through the use of high sampling rates,
but that is not economical, so interpolation between echo samples
is used. This paper presents a beamformer architecture that
combines a band-pass filter-based interpolation algorithm with
the dynamic delay-and-sum focusing of a digital beamformer. The
reduction in the number of multiplications relative to a linear perchannel
interpolation and band-pass per-channel interpolation
architecture is respectively 58 % and 75 % beamformer for a
256-channel beamformer using 4-tap filters. The approach allows
building high channel count beamformers while maintaining
high image quality due to the use of sophisticated intersample
interpolation.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 2011 IEEE International Ultrasonics Symposium |
| Number of pages | 4 |
| Publisher | IEEE |
| Publication date | 2011 |
| Pages | 381-384 |
| ISBN (Print) | 978-1-4577-1251-7 |
| DOIs | |
| Publication status | Published - 2011 |
| Event | 2011 IEEE International Ultrasonics Symposium - Caribe Royale, Orlando, United States Duration: 18 Oct 2011 → 21 Oct 2011 http://ewh.ieee.org/conf/ius_2011/ https://ieeexplore.ieee.org/xpl/conhome/6269152/proceeding |
Conference
| Conference | 2011 IEEE International Ultrasonics Symposium |
|---|---|
| Location | Caribe Royale |
| Country/Territory | United States |
| City | Orlando |
| Period | 18/10/2011 → 21/10/2011 |
| Internet address |
Keywords
- Focusing
- Beamforming
- Interpolation