Abstract
The investigated hypothesis is that quantization of
the transmit delay profiles degrades the image quality in plane
wave ultrasound imaging. Simulated point spread functions show
that transmit delay profile quantization gives rise to artefacts
behind the point target. The axial and lateral 6 dB resolution is
unaffected, but contrast is reduced. This is quantified by a 20
dB cystic resolution of 1.23 mm compared to 0.53 mm for the
ideal (non-quantized) case at 10 mm depth. It is also shown that
providing individually phase-shifted excitation waveforms to each
element restores the image quality, as seen by the 20 dB cystic
resolution being restored to 0.53 mm. The impact on high-quality
imaging is discussed.
Original language | English |
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Title of host publication | Proceedings of 2015 IEEE International Ultrasonics Symposium |
Publisher | IEEE |
Publication date | 2015 |
ISBN (Print) | 978-1-4799-8182-3 |
DOIs | |
Publication status | Published - 2015 |
Event | 2015 IEEE International Ultrasonics Symposium - Taipei, Taiwan, Province of China Duration: 21 Oct 2015 → 24 Oct 2015 https://ieeexplore.ieee.org/xpl/conhome/7315052/proceeding |
Conference
Conference | 2015 IEEE International Ultrasonics Symposium |
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Country/Territory | Taiwan, Province of China |
City | Taipei |
Period | 21/10/2015 → 24/10/2015 |
Internet address |