A reconfigurable all-optical ultrasound transducer array for 3D endoscopic imaging

Abstract A miniature all-optical ultrasound imaging system is presented that generates three-dimensional images using a stationary, real acoustic source aperture. Discrete acoustic sources were sequentially addressed by scanning a focussed optical beam across the proximal end of a coherent fibre bun...

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Autores principales:	Erwin J. Alles, Nora Fook Sheung, Sacha Noimark, Edward Z. Zhang, Paul C. Beard, Adrien E. Desjardins
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/25bdbca81cd44fc28f22db7a5815c159
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spelling	oai:doaj.org-article:25bdbca81cd44fc28f22db7a5815c1592021-12-02T15:05:27ZA reconfigurable all-optical ultrasound transducer array for 3D endoscopic imaging10.1038/s41598-017-01375-22045-2322https://doaj.org/article/25bdbca81cd44fc28f22db7a5815c1592017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01375-2https://doaj.org/toc/2045-2322Abstract A miniature all-optical ultrasound imaging system is presented that generates three-dimensional images using a stationary, real acoustic source aperture. Discrete acoustic sources were sequentially addressed by scanning a focussed optical beam across the proximal end of a coherent fibre bundle; high-frequency ultrasound (156% fractional bandwidth centred around 13.5 MHz) was generated photoacoustically in the corresponding regions of an optically absorbing coating deposited at the distal end. Paired with a single fibre-optic ultrasound detector, the imaging probe (3.5 mm outer diameter) achieved high on-axis resolutions of 97 μm, 179 μm and 110 μm in the x, y and z directions, respectively. Furthermore, the optical scan pattern, and thus the acoustic source array geometry, was readily reconfigured. Implementing four different array geometries revealed a strong dependency of the image quality on the source location pattern. Thus, by employing optical technology, a miniature ultrasound probe was fabricated that allows for arbitrary source array geometries, which is suitable for three-dimensional endoscopic and laparoscopic imaging, as was demonstrated on ex vivo porcine cardiac tissue.Erwin J. AllesNora Fook SheungSacha NoimarkEdward Z. ZhangPaul C. BeardAdrien E. DesjardinsNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Erwin J. Alles Nora Fook Sheung Sacha Noimark Edward Z. Zhang Paul C. Beard Adrien E. Desjardins A reconfigurable all-optical ultrasound transducer array for 3D endoscopic imaging
description	Abstract A miniature all-optical ultrasound imaging system is presented that generates three-dimensional images using a stationary, real acoustic source aperture. Discrete acoustic sources were sequentially addressed by scanning a focussed optical beam across the proximal end of a coherent fibre bundle; high-frequency ultrasound (156% fractional bandwidth centred around 13.5 MHz) was generated photoacoustically in the corresponding regions of an optically absorbing coating deposited at the distal end. Paired with a single fibre-optic ultrasound detector, the imaging probe (3.5 mm outer diameter) achieved high on-axis resolutions of 97 μm, 179 μm and 110 μm in the x, y and z directions, respectively. Furthermore, the optical scan pattern, and thus the acoustic source array geometry, was readily reconfigured. Implementing four different array geometries revealed a strong dependency of the image quality on the source location pattern. Thus, by employing optical technology, a miniature ultrasound probe was fabricated that allows for arbitrary source array geometries, which is suitable for three-dimensional endoscopic and laparoscopic imaging, as was demonstrated on ex vivo porcine cardiac tissue.
format	article
author	Erwin J. Alles Nora Fook Sheung Sacha Noimark Edward Z. Zhang Paul C. Beard Adrien E. Desjardins
author_facet	Erwin J. Alles Nora Fook Sheung Sacha Noimark Edward Z. Zhang Paul C. Beard Adrien E. Desjardins
author_sort	Erwin J. Alles
title	A reconfigurable all-optical ultrasound transducer array for 3D endoscopic imaging
title_short	A reconfigurable all-optical ultrasound transducer array for 3D endoscopic imaging
title_full	A reconfigurable all-optical ultrasound transducer array for 3D endoscopic imaging
title_fullStr	A reconfigurable all-optical ultrasound transducer array for 3D endoscopic imaging
title_full_unstemmed	A reconfigurable all-optical ultrasound transducer array for 3D endoscopic imaging
title_sort	reconfigurable all-optical ultrasound transducer array for 3d endoscopic imaging
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/25bdbca81cd44fc28f22db7a5815c159
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A reconfigurable all-optical ultrasound transducer array for 3D endoscopic imaging

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