TY  - JOUR
AU  - Nogueira-Barbosa, Marcello H.
AU  - Kamimura, Hermes Arytto Salles
AU  - Braz, Guilherme
AU  - Agnollitto, Paulo M.
AU  - Oliveira Carneiro, Antonio Adilton
PY  - 2017
TI  - Preliminary results of vibro-acoustography evaluation of bone  surface and bone fracture
JF  - Quantitative Imaging in Medicine and Surgery; Vol 7, No 5 (October 31, 2017): Quantitative Imaging in Medicine and Surgery
Y2  - 2017
KW  - 
N2  - 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.
UR  - https://qims.amegroups.org/article/view/16937