Image Quality Degradation from Transmit Delay Profile Quantization

Matthias Bo Stuart; Jonas Jensen; Tommaso di Ianni; Jørgen Arendt Jensen

doi:10.1109/ULTSYM.2015.0126

Image Quality Degradation from Transmit Delay Profile Quantization

Matthias Bo Stuart, Jonas Jensen, Tommaso di Ianni, Jørgen Arendt Jensen

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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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
Title of host publication	Proceedings of 2015 IEEE International Ultrasonics Symposium
Publisher	IEEE
Publication date	2015
ISBN (Print)	978-1-4799-8182-3
DOIs	https://doi.org/10.1109/ULTSYM.2015.0126
Publication status	Published - 2015
Event	2015 IEEE International Ultrasonics Symposium - Taipei, Taiwan, Province of China Duration: 21 Oct 2015 → 24 Oct 2015

Conference

Conference	2015 IEEE International Ultrasonics Symposium
Country	Taiwan, Province of China
City	Taipei
Period	21/10/2015 → 24/10/2015

Access to Document

10.1109/ULTSYM.2015.0126

PublishedAccepted author manuscript, 2.2 MB

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title = "Image Quality Degradation from Transmit Delay Profile Quantization",

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.",

author = "Stuart, {Matthias Bo} and Jonas Jensen and {di Ianni}, Tommaso and Jensen, {J{\o}rgen Arendt}",

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language = "English",

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AU - Stuart, Matthias Bo

AU - Jensen, Jonas

AU - di Ianni, Tommaso

AU - Jensen, Jørgen Arendt

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Y1 - 2015

N2 - 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.

AB - 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.

U2 - 10.1109/ULTSYM.2015.0126

DO - 10.1109/ULTSYM.2015.0126

M3 - Article in proceedings

SN - 978-1-4799-8182-3

BT - Proceedings of 2015 IEEE International Ultrasonics Symposium

PB - IEEE

T2 - 2015 IEEE International Ultrasonics Symposium

Y2 - 21 October 2015 through 24 October 2015

ER -