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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Preliminary results of vibro-acoustography evaluation of bone surface and bone fracture

Texto completo
Autor(es):
Nogueira-Barbosa, Marcello H. [1] ; Salles Kamimura, Hermes Arytto [2] ; Braz, Guilherme [2] ; Agnollitto, Paulo M. [1] ; Oliveira Carneiro, Antonio Adilton [2]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Ribeirao Preto Med Sch, Radiol Div, Ribeirao Preto, SP - Brazil
[2] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Phys Dept, Ribeirao Preto, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: QUANTITATIVE IMAGING IN MEDICINE AND SURGERY; v. 7, n. 5, p. 549-554, OCT 2017.
Citações Web of Science: 2
Resumo

Background: Vibro-acoustography (VA) uses two co-focused ultrasound beams with slightly different frequencies. The beams interact and generate a low-frequency focus to excite an object. Methods: A two-element confocal ultrasound transducer with central frequency at 3.2 MHz was used to generate the low-frequency excitation (30 kHz) and the response of the bone to that excitation was acquired by a dedicated hydrophone. The face of the confocal transducer was positioned parallel to the surface of the bone at a focal length of 7 cm. The hydrophone was fixed to the side of the transducer, out of the path of the ultrasonic beam. Results: The resulting image clearly showed the bone fracture with resolution of 0.25 mm and high contrast with well-defined borders. Conclusions: In this paper, we present preliminary results of VA imaging of bone surface and of bone fracture using an experimental set-up. Our results encourage future studies using VA to evaluate bone fractures. (AU)

Processo FAPESP: 11/10809-6 - Sonotrombólise por força de radiação acústica focalizada e modulada por duplo feixe
Beneficiário:Hermes Arytto Salles Kamimura
Linha de fomento: Bolsas no Brasil - Doutorado