Coded excitation with optimized inverse filter for improving sensitivity in acoustoelectric imaging

Hsin Wu Tseng; Yexian Qin; Matthew O'Donnell; Russell S Witte

doi:10.1109/ULTSYM.2017.8092796

Coded excitation with optimized inverse filter for improving sensitivity in acoustoelectric imaging

Hsin Wu Tseng, Yexian Qin, Matthew O'Donnell, Russell S Witte

Medical Imaging

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Noninvasive imaging of physiologic currents in the body is limited by poor spatial resolution due to the ambiguous conductivity distribution between the current sources and recording electrodes. Acoustoelectric imaging (AEI), based on the interaction between pressure and resistivity, provides higher spatial resolution. Although we have demonstrated AEI of the cardiac activation wave in the live rabbit heart, weak physiologic currents (e.g., in the heart or brain < 1 μV) and ultrasound (US) pulses of balanced shape (zero mean) make detection especially challenging. This study investigates the use of standard US transducers with coded excitation with optimized inverse filter to produce quasi-unipolar pulses that amplify the AE signal.

Original language	English (US)
Title of host publication	2017 IEEE International Ultrasonics Symposium, IUS 2017
Publisher	IEEE Computer Society
ISBN (Electronic)	9781538633830
DOIs	https://doi.org/10.1109/ULTSYM.2017.8092796
State	Published - Oct 31 2017
Event	2017 IEEE International Ultrasonics Symposium, IUS 2017 - Washington, United States Duration: Sep 6 2017 → Sep 9 2017

Other

Other	2017 IEEE International Ultrasonics Symposium, IUS 2017
Country	United States
City	Washington
Period	9/6/17 → 9/9/17

ASJC Scopus subject areas

Acoustics and Ultrasonics

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10.1109/ULTSYM.2017.8092796

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Tseng, HW, Qin, Y, O'Donnell, M & Witte, RS 2017, Coded excitation with optimized inverse filter for improving sensitivity in acoustoelectric imaging. in 2017 IEEE International Ultrasonics Symposium, IUS 2017., 8092796, IEEE Computer Society, 2017 IEEE International Ultrasonics Symposium, IUS 2017, Washington, United States, 9/6/17. https://doi.org/10.1109/ULTSYM.2017.8092796

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abstract = "Noninvasive imaging of physiologic currents in the body is limited by poor spatial resolution due to the ambiguous conductivity distribution between the current sources and recording electrodes. Acoustoelectric imaging (AEI), based on the interaction between pressure and resistivity, provides higher spatial resolution. Although we have demonstrated AEI of the cardiac activation wave in the live rabbit heart, weak physiologic currents (e.g., in the heart or brain < 1 μV) and ultrasound (US) pulses of balanced shape (zero mean) make detection especially challenging. This study investigates the use of standard US transducers with coded excitation with optimized inverse filter to produce quasi-unipolar pulses that amplify the AE signal.",

author = "Tseng, {Hsin Wu} and Yexian Qin and Matthew O'Donnell and Witte, {Russell S}",

year = "2017",

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doi = "10.1109/ULTSYM.2017.8092796",

language = "English (US)",

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AU - Witte, Russell S

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Y1 - 2017/10/31

N2 - Noninvasive imaging of physiologic currents in the body is limited by poor spatial resolution due to the ambiguous conductivity distribution between the current sources and recording electrodes. Acoustoelectric imaging (AEI), based on the interaction between pressure and resistivity, provides higher spatial resolution. Although we have demonstrated AEI of the cardiac activation wave in the live rabbit heart, weak physiologic currents (e.g., in the heart or brain < 1 μV) and ultrasound (US) pulses of balanced shape (zero mean) make detection especially challenging. This study investigates the use of standard US transducers with coded excitation with optimized inverse filter to produce quasi-unipolar pulses that amplify the AE signal.

AB - Noninvasive imaging of physiologic currents in the body is limited by poor spatial resolution due to the ambiguous conductivity distribution between the current sources and recording electrodes. Acoustoelectric imaging (AEI), based on the interaction between pressure and resistivity, provides higher spatial resolution. Although we have demonstrated AEI of the cardiac activation wave in the live rabbit heart, weak physiologic currents (e.g., in the heart or brain < 1 μV) and ultrasound (US) pulses of balanced shape (zero mean) make detection especially challenging. This study investigates the use of standard US transducers with coded excitation with optimized inverse filter to produce quasi-unipolar pulses that amplify the AE signal.

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M3 - Conference contribution

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BT - 2017 IEEE International Ultrasonics Symposium, IUS 2017

PB - IEEE Computer Society

T2 - 2017 IEEE International Ultrasonics Symposium, IUS 2017

Y2 - 6 September 2017 through 9 September 2017

ER -

Coded excitation with optimized inverse filter for improving sensitivity in acoustoelectric imaging

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