Finite Transducer Size Compensation in Two-Dimensional Photoacoustic Computed Tomography

Soheil  Hakakzadeh; Moein Mozaffarzadeh; Seyed Masood Mostafavi; Mohammadreza  Amjadian; Zahra  Kavehvash; Martin Verweij; Nico de Jong

doi:10.1109/IUS52206.2021.9593757

Finite Transducer Size Compensation in Two-Dimensional Photoacoustic Computed Tomography

Soheil Hakakzadeh, Moein Mozaffarzadeh, Seyed Masood Mostafavi, Mohammadreza Amjadian, Zahra Kavehvash, Martin Verweij, Nico de Jong

ImPhys/Medical Imaging

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

9 Citations (Scopus)

60 Downloads (Pure)

Abstract

In circular photoacoustic computed tomography, for data acquisition, a single-element transducer rotates around the region of interest (ROI). Due to the limited acceptance angle of the finite size transducer, the reconstructed image becomes blurred, and tangential resolution/contrast degrades in off-center locations in the ROI. In this paper, we propose a compensation method in which in addition to the circular scanning, the transducer rotates around its center (with specific angles) at each detection point. The superposition of these central rotations and non-rotated transducer mimics a virtual detector with a wide acceptance angle. The angles are calculated based on the central frequency and diameter of the transducer and the radius of the region-of-interest. Three types of numerical phantom (point-like, vasculature and Derenzo) were used to evaluate the performance of our method. Features of Olympus NDT, V326-SU transducer were used to assemble the numerical data. The results show that the proposed method provides better structural information by lowering the image blurring, improves the tangential resolution by 90% and increases peak signal-to-noise ratio by 14%.

Original language	English
Title of host publication	2021 IEEE International Ultrasonics Symposium (IUS)
Subtitle of host publication	Proceedings
Place of Publication	Piscataway
Publisher	IEEE
Pages	1-3
ISBN (Electronic)	978-1-6654-0355-9
ISBN (Print)	978-1-6654-4777-5
DOIs	https://doi.org/10.1109/IUS52206.2021.9593757
Publication status	Published - 2021
Event	2021 IEEE International Ultrasonics Symposium (IUS) - Virtual at Xi'an, China Duration: 11 Sept 2021 → 16 Sept 2021

Publication series

Name	IEEE International Ultrasonics Symposium, IUS
ISSN (Print)	1948-5719

Conference

Conference	2021 IEEE International Ultrasonics Symposium (IUS)
Abbreviated title	IUS 2021
Country/Territory	China
City	Virtual at Xi'an
Period	11/09/21 → 16/09/21

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

Finite size transducer
Image blurring
Photoacoustic imaging
virtual source. Resolution

Access to Document

10.1109/IUS52206.2021.9593757

Finite_Transducer_Size_Compensation_in_Two-Dimensional_Photoacoustic_Computed_TomographyFinal published version, 535 KB

Cite this

Hakakzadeh, S., Mozaffarzadeh, M., Mostafavi, S. M., Amjadian, M., Kavehvash, Z., Verweij, M., & de Jong, N. (2021). Finite Transducer Size Compensation in Two-Dimensional Photoacoustic Computed Tomography. In 2021 IEEE International Ultrasonics Symposium (IUS): Proceedings (pp. 1-3). Article 9593757 (IEEE International Ultrasonics Symposium, IUS). IEEE. https://doi.org/10.1109/IUS52206.2021.9593757

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title = "Finite Transducer Size Compensation in Two-Dimensional Photoacoustic Computed Tomography",

abstract = "In circular photoacoustic computed tomography, for data acquisition, a single-element transducer rotates around the region of interest (ROI). Due to the limited acceptance angle of the finite size transducer, the reconstructed image becomes blurred, and tangential resolution/contrast degrades in off-center locations in the ROI. In this paper, we propose a compensation method in which in addition to the circular scanning, the transducer rotates around its center (with specific angles) at each detection point. The superposition of these central rotations and non-rotated transducer mimics a virtual detector with a wide acceptance angle. The angles are calculated based on the central frequency and diameter of the transducer and the radius of the region-of-interest. Three types of numerical phantom (point-like, vasculature and Derenzo) were used to evaluate the performance of our method. Features of Olympus NDT, V326-SU transducer were used to assemble the numerical data. The results show that the proposed method provides better structural information by lowering the image blurring, improves the tangential resolution by 90% and increases peak signal-to-noise ratio by 14%.",

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author = "Soheil Hakakzadeh and Moein Mozaffarzadeh and Mostafavi, {Seyed Masood} and Mohammadreza Amjadian and Zahra Kavehvash and Martin Verweij and {de Jong}, Nico",

note = " Green Open Access added to TU Delft Institutional Repository {\textquoteleft}You share, we take care!{\textquoteright} – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. ; 2021 IEEE International Ultrasonics Symposium (IUS), IUS 2021 ; Conference date: 11-09-2021 Through 16-09-2021",

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Hakakzadeh, S, Mozaffarzadeh, M, Mostafavi, SM, Amjadian, M, Kavehvash, Z, Verweij, M & de Jong, N 2021, Finite Transducer Size Compensation in Two-Dimensional Photoacoustic Computed Tomography. in 2021 IEEE International Ultrasonics Symposium (IUS): Proceedings., 9593757, IEEE International Ultrasonics Symposium, IUS, IEEE, Piscataway, pp. 1-3, 2021 IEEE International Ultrasonics Symposium (IUS), Virtual at Xi'an, China, 11/09/21. https://doi.org/10.1109/IUS52206.2021.9593757

Finite Transducer Size Compensation in Two-Dimensional Photoacoustic Computed Tomography. / Hakakzadeh, Soheil ; Mozaffarzadeh, Moein; Mostafavi, Seyed Masood et al.
2021 IEEE International Ultrasonics Symposium (IUS): Proceedings. Piscataway: IEEE, 2021. p. 1-3 9593757 (IEEE International Ultrasonics Symposium, IUS).

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Finite Transducer Size Compensation in Two-Dimensional Photoacoustic Computed Tomography

AU - Hakakzadeh, Soheil

AU - Mozaffarzadeh, Moein

AU - Mostafavi, Seyed Masood

AU - Amjadian, Mohammadreza

AU - Kavehvash, Zahra

AU - Verweij, Martin

AU - de Jong, Nico

N1 - Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

PY - 2021

Y1 - 2021

N2 - In circular photoacoustic computed tomography, for data acquisition, a single-element transducer rotates around the region of interest (ROI). Due to the limited acceptance angle of the finite size transducer, the reconstructed image becomes blurred, and tangential resolution/contrast degrades in off-center locations in the ROI. In this paper, we propose a compensation method in which in addition to the circular scanning, the transducer rotates around its center (with specific angles) at each detection point. The superposition of these central rotations and non-rotated transducer mimics a virtual detector with a wide acceptance angle. The angles are calculated based on the central frequency and diameter of the transducer and the radius of the region-of-interest. Three types of numerical phantom (point-like, vasculature and Derenzo) were used to evaluate the performance of our method. Features of Olympus NDT, V326-SU transducer were used to assemble the numerical data. The results show that the proposed method provides better structural information by lowering the image blurring, improves the tangential resolution by 90% and increases peak signal-to-noise ratio by 14%.

AB - In circular photoacoustic computed tomography, for data acquisition, a single-element transducer rotates around the region of interest (ROI). Due to the limited acceptance angle of the finite size transducer, the reconstructed image becomes blurred, and tangential resolution/contrast degrades in off-center locations in the ROI. In this paper, we propose a compensation method in which in addition to the circular scanning, the transducer rotates around its center (with specific angles) at each detection point. The superposition of these central rotations and non-rotated transducer mimics a virtual detector with a wide acceptance angle. The angles are calculated based on the central frequency and diameter of the transducer and the radius of the region-of-interest. Three types of numerical phantom (point-like, vasculature and Derenzo) were used to evaluate the performance of our method. Features of Olympus NDT, V326-SU transducer were used to assemble the numerical data. The results show that the proposed method provides better structural information by lowering the image blurring, improves the tangential resolution by 90% and increases peak signal-to-noise ratio by 14%.

KW - Finite size transducer

KW - Image blurring

KW - Photoacoustic imaging

KW - virtual source. Resolution

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DO - 10.1109/IUS52206.2021.9593757

M3 - Conference contribution

SN - 978-1-6654-4777-5

T3 - IEEE International Ultrasonics Symposium, IUS

SP - 1

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BT - 2021 IEEE International Ultrasonics Symposium (IUS)

PB - IEEE

CY - Piscataway

T2 - 2021 IEEE International Ultrasonics Symposium (IUS)

Y2 - 11 September 2021 through 16 September 2021

ER -

Hakakzadeh S, Mozaffarzadeh M, Mostafavi SM, Amjadian M, Kavehvash Z, Verweij M et al. Finite Transducer Size Compensation in Two-Dimensional Photoacoustic Computed Tomography. In 2021 IEEE International Ultrasonics Symposium (IUS): Proceedings. Piscataway: IEEE. 2021. p. 1-3. 9593757. (IEEE International Ultrasonics Symposium, IUS). doi: 10.1109/IUS52206.2021.9593757

Finite Transducer Size Compensation in Two-Dimensional Photoacoustic Computed Tomography

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Keywords

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