Imaging beyond ultrasonically-impenetrable objects

Abstract Ultrasound images are severely degraded by the presence of obstacles such as bones and air gaps along the beam path. This paper describes a method for imaging structures that are distal to obstacles that are otherwise impenetrable to ultrasound. The method uses an optically-inspired hologra...

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Autores principales:	Tali Ilovitsh, Asaf Ilovitsh, Josquin Foiret, Katherine W. Ferrara
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/49bd30a6e7554341b999ec85ef19a299
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spelling	oai:doaj.org-article:49bd30a6e7554341b999ec85ef19a2992021-12-02T15:07:51ZImaging beyond ultrasonically-impenetrable objects10.1038/s41598-018-23776-72045-2322https://doaj.org/article/49bd30a6e7554341b999ec85ef19a2992018-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-23776-7https://doaj.org/toc/2045-2322Abstract Ultrasound images are severely degraded by the presence of obstacles such as bones and air gaps along the beam path. This paper describes a method for imaging structures that are distal to obstacles that are otherwise impenetrable to ultrasound. The method uses an optically-inspired holographic algorithm to beam-shape the emitted ultrasound field in order to bypass the obstacle and place the beam focus beyond the obstruction. The resulting performance depends on the transducer aperture, the size and position of the obstacle, and the position of the target. Improvement compared to standard ultrasound imaging is significant for obstacles for which the width is larger than one fourth of the transducer aperture and the depth is within a few centimeters of the transducer. For such cases, the improvement in focal intensity at the location of the target reaches 30-fold, and the improvement in peak-to-side-lobe ratio reaches 3-fold. The method can be implemented in conventional ultrasound systems, and the entire process can be performed in real time. This method has applications in the fields of cancer detection, abdominal imaging, imaging of vertebral structure and ultrasound tomography. Here, its effectiveness is demonstrated using wire targets, tissue mimicking phantoms and an ex vivo biological sample.Tali IlovitshAsaf IlovitshJosquin FoiretKatherine W. FerraraNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-11 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Tali Ilovitsh Asaf Ilovitsh Josquin Foiret Katherine W. Ferrara Imaging beyond ultrasonically-impenetrable objects
description	Abstract Ultrasound images are severely degraded by the presence of obstacles such as bones and air gaps along the beam path. This paper describes a method for imaging structures that are distal to obstacles that are otherwise impenetrable to ultrasound. The method uses an optically-inspired holographic algorithm to beam-shape the emitted ultrasound field in order to bypass the obstacle and place the beam focus beyond the obstruction. The resulting performance depends on the transducer aperture, the size and position of the obstacle, and the position of the target. Improvement compared to standard ultrasound imaging is significant for obstacles for which the width is larger than one fourth of the transducer aperture and the depth is within a few centimeters of the transducer. For such cases, the improvement in focal intensity at the location of the target reaches 30-fold, and the improvement in peak-to-side-lobe ratio reaches 3-fold. The method can be implemented in conventional ultrasound systems, and the entire process can be performed in real time. This method has applications in the fields of cancer detection, abdominal imaging, imaging of vertebral structure and ultrasound tomography. Here, its effectiveness is demonstrated using wire targets, tissue mimicking phantoms and an ex vivo biological sample.
format	article
author	Tali Ilovitsh Asaf Ilovitsh Josquin Foiret Katherine W. Ferrara
author_facet	Tali Ilovitsh Asaf Ilovitsh Josquin Foiret Katherine W. Ferrara
author_sort	Tali Ilovitsh
title	Imaging beyond ultrasonically-impenetrable objects
title_short	Imaging beyond ultrasonically-impenetrable objects
title_full	Imaging beyond ultrasonically-impenetrable objects
title_fullStr	Imaging beyond ultrasonically-impenetrable objects
title_full_unstemmed	Imaging beyond ultrasonically-impenetrable objects
title_sort	imaging beyond ultrasonically-impenetrable objects
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/49bd30a6e7554341b999ec85ef19a299
work_keys_str_mv	AT taliilovitsh imagingbeyondultrasonicallyimpenetrableobjects AT asafilovitsh imagingbeyondultrasonicallyimpenetrableobjects AT josquinfoiret imagingbeyondultrasonicallyimpenetrableobjects AT katherinewferrara imagingbeyondultrasonicallyimpenetrableobjects
_version_	1718388381606477824

Imaging beyond ultrasonically-impenetrable objects

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