Bidirectional holograms for transcranial therapeutic ultrasound
[EN] Acoustic holograms are emerging as a new therapeutic approach to focus ultrasound energy into human tissues. Holograms are suited to generate sharp acoustic images and, in addition, the phase aberrations produced by tissues such as skull bones can be compensated. However, these lenses present a...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/228335 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/228335 |
| Access Level: | acceso abierto |
| Palabra clave: | Hologramas acústicos Terápias transcraneles con ultrasonido Lentes anatómicas. Acoustic holograms Transcranial therapeutic ultrasound Matching layers. Máster Universitario en Ingeniería Acústica-Màster Universitari en Enginyeria Acústica |
| Sumario: | [EN] Acoustic holograms are emerging as a new therapeutic approach to focus ultrasound energy into human tissues. Holograms are suited to generate sharp acoustic images and, in addition, the phase aberrations produced by tissues such as skull bones can be compensated. However, these lenses present a rough and irregular shape that make difficult its coupling with the human skin. In this work, we exploit the reciprocity of the mechanical waves to manufacture lenses that present either a flatter surface in the radiating face. This face can be designed to fit over the skin, easily adapting to different anatomical areas of the head, such as the temporal bone window, enhancing the coupling of the lens to the patient head. To validate this approach a set of acoustic simulations considering different materials to design the holographic lens are considered. In this way, this approach results in a compact wearable device for transcranial therapeutic ultrasound applications such as neuromodulation, localized drug delivery or focused hyperthermia. |
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