Single-Channel Hadamard Encoded Endoscope for High-Frequency IVUS Imaging

Eric Simpson; Katherine Latham; Christopher Samson; J. K. Woodacre; Tegan Aguinaga; Jeremy A. Brown

doi:10.1109/ULTSYM.2019.8926083

Single-Channel Hadamard Encoded Endoscope for High-Frequency IVUS Imaging

Eric Simpson, Katherine Latham, Christopher Samson, J. K. Woodacre, Tegan Aguinaga, Jeremy A. Brown

Medicine

Medicine

Résultat de recherche: Conference contribution

Résumé

A new image acquisition scheme is presented that is optimized for applications that require channel-limited transducers such as IVUS. During image acquisition, both the transmit and receive apertures are dynamically phase-encoded with a set of orthogonal (Hadamard) codes. The transducer's excitation and data collection are handled on a single RF channel. Simulations using the Field II software package showed an 18 dB improvement in SNR when compared to a synthetic aperture technique which multiplexes elements into a single RF channel. A 30 MHz transducer with an endoscopic form-factor was fabricated and used to demonstrate data collection and image reconstruction based on this Hadamard-encoding scheme. Experimentally-reconstructed images of a wire-target showed 50 dB of dynamic range.

Langue d'origine	English
Titre de la publication principale	2019 IEEE International Ultrasonics Symposium, IUS 2019
Maison d'édition	IEEE Computer Society
Pages	1801-1804
Nombre de pages	4
ISBN (électronique)	9781728145969
DOI	https://doi.org/10.1109/ULTSYM.2019.8926083
Statut de publication	Published - oct. 2019
Événement	2019 IEEE International Ultrasonics Symposium, IUS 2019 - Glasgow, United Kingdom Durée: oct. 6 2019 → oct. 9 2019

Séries de publication

Prénom	IEEE International Ultrasonics Symposium, IUS
Volume	2019-October
ISSN (imprimé)	1948-5719
ISSN (électronique)	1948-5727

Conference

Conference	2019 IEEE International Ultrasonics Symposium, IUS 2019
Pays/Territoire	United Kingdom
Ville	Glasgow
Période	10/6/19 → 10/9/19

Note bibliographique

Publisher Copyright:
© 2019 IEEE.

ASJC Scopus Subject Areas

Acoustics and Ultrasonics

Accès au document

10.1109/ULTSYM.2019.8926083

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Simpson, E., Latham, K., Samson, C., Woodacre, J. K., Aguinaga, T., & Brown, J. A. (2019). Single-Channel Hadamard Encoded Endoscope for High-Frequency IVUS Imaging. Dans 2019 IEEE International Ultrasonics Symposium, IUS 2019 (pp. 1801-1804). Article 8926083 (IEEE International Ultrasonics Symposium, IUS; Vol. 2019-October). IEEE Computer Society. https://doi.org/10.1109/ULTSYM.2019.8926083

Simpson, E, Latham, K, Samson, C, Woodacre, JK, Aguinaga, T & Brown, JA 2019, Single-Channel Hadamard Encoded Endoscope for High-Frequency IVUS Imaging. dans 2019 IEEE International Ultrasonics Symposium, IUS 2019., 8926083, IEEE International Ultrasonics Symposium, IUS, vol. 2019-October, IEEE Computer Society, pp. 1801-1804, 2019 IEEE International Ultrasonics Symposium, IUS 2019, Glasgow, United Kingdom, 10/6/19. https://doi.org/10.1109/ULTSYM.2019.8926083

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abstract = "A new image acquisition scheme is presented that is optimized for applications that require channel-limited transducers such as IVUS. During image acquisition, both the transmit and receive apertures are dynamically phase-encoded with a set of orthogonal (Hadamard) codes. The transducer's excitation and data collection are handled on a single RF channel. Simulations using the Field II software package showed an 18 dB improvement in SNR when compared to a synthetic aperture technique which multiplexes elements into a single RF channel. A 30 MHz transducer with an endoscopic form-factor was fabricated and used to demonstrate data collection and image reconstruction based on this Hadamard-encoding scheme. Experimentally-reconstructed images of a wire-target showed 50 dB of dynamic range.",

author = "Eric Simpson and Katherine Latham and Christopher Samson and Woodacre, {J. K.} and Tegan Aguinaga and Brown, {Jeremy A.}",

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AU - Brown, Jeremy A.

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AB - A new image acquisition scheme is presented that is optimized for applications that require channel-limited transducers such as IVUS. During image acquisition, both the transmit and receive apertures are dynamically phase-encoded with a set of orthogonal (Hadamard) codes. The transducer's excitation and data collection are handled on a single RF channel. Simulations using the Field II software package showed an 18 dB improvement in SNR when compared to a synthetic aperture technique which multiplexes elements into a single RF channel. A 30 MHz transducer with an endoscopic form-factor was fabricated and used to demonstrate data collection and image reconstruction based on this Hadamard-encoding scheme. Experimentally-reconstructed images of a wire-target showed 50 dB of dynamic range.

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Single-Channel Hadamard Encoded Endoscope for High-Frequency IVUS Imaging

Résumé

Séries de publication

Conference

Note bibliographique

ASJC Scopus Subject Areas

Accès au document

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