A Miniature 16-element Endoscopic Histotripsy Transducer with Electronically Steerable Focus

Matthew Mallay, Jeffery Woodacre, Taha Take, Emily Napier, Sandra Gorgey, Jeremy Brown

Résultat de recherche: Conference contribution

Résumé

A 5 mm by 5 mm 16-element histotripsy transducer was built and tested using a lens bonded to an air-backed 1-3 piezoelectric composite. The transducer was driven by a custom designed 16 channel pulse generator. Both aluminum and methacrylate photopolymer (resin) lens designs were modelled using a COMSOL FEM model. A resin lens was 3D printed and used to fabricate a transducer array with a focus that could be steered over a greater area than the aluminum lens design. The resin lens transducer had a peak negative pressure trend of 5.7 MPa/100 V. The -3 dB focal length and width were 1.94 mm and 0.30 mm. A pulse sequence cycling through 5 foci spaced within a 1.5 mm square was used to ablate ex vivo rat brain tissue through shock scattering cavitation near the surface.

Langue d'origineEnglish
Titre de la publication principale2019 IEEE International Ultrasonics Symposium, IUS 2019
Maison d'éditionIEEE Computer Society
Pages1797-1800
Nombre de pages4
ISBN (électronique)9781728145969
DOI
Statut de publicationPublished - oct. 2019
Événement2019 IEEE International Ultrasonics Symposium, IUS 2019 - Glasgow, United Kingdom
Durée: oct. 6 2019oct. 9 2019

Séries de publication

PrénomIEEE International Ultrasonics Symposium, IUS
Volume2019-October
ISSN (imprimé)1948-5719
ISSN (électronique)1948-5727

Conference

Conference2019 IEEE International Ultrasonics Symposium, IUS 2019
Pays/TerritoireUnited Kingdom
VilleGlasgow
Période10/6/1910/9/19

Note bibliographique

Publisher Copyright:
© 2019 IEEE.

ASJC Scopus Subject Areas

  • Acoustics and Ultrasonics

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