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'origine | English |
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Titre de la publication principale | 2019 IEEE International Ultrasonics Symposium, IUS 2019 |
Maison d'édition | IEEE Computer Society |
Pages | 1797-1800 |
Nombre de pages | 4 |
ISBN (électronique) | 9781728145969 |
DOI | |
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 |
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Volume | 2019-October |
ISSN (imprimé) | 1948-5719 |
ISSN (électronique) | 1948-5727 |
Conference
Conference | 2019 IEEE International Ultrasonics Symposium, IUS 2019 |
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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