Performance of an Ultrasonic Imaging System Based on a 45-MHz Linear PVDF Transducer Array : A Numerical Study
Joint Authors
Brodal, Eivind
Melandsø, Frank
Jacobsen, Svein
Source
Advances in Acoustics and Vibration
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-05-31
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
New designs of high-resolution ultrasonic imaging systems that operate in the 30–100 MHz region, for example, those based on linear transducer systems, are currently being investigated for medical purposes.
Acoustic waves with frequencies in this range can detect microscopic structures in human tissue but will typically only penetrate a few mm because of large attenuation.
However, this is sufficient for a diagnostic ultrasound scan of human skin.
The signal-to-noise ratio and the focusing properties of the scanner are critical factors in dermatology, which are determined by the transducer design.
A linear pulsed PVDF transducer array with a center frequency around 45 MHz is studied by applying numerical simulations, based on the finite element method (FEM), of this electromechanical system.
Tx-beamforming properties of linear arrays with one, three, five, and seven active elements are investigated at different depths.
The image quality obtained from synthetic Rx-beamforming, using responses from five electrodes, is estimated from reconstructed images of 25–100 μm thick objects.
The axial and lateral resolutions of these images are found to be similar with the Tx-beamforming resolution parameters estimated from the time-derivative of the pressure beams.
American Psychological Association (APA)
Brodal, Eivind& Melandsø, Frank& Jacobsen, Svein. 2011. Performance of an Ultrasonic Imaging System Based on a 45-MHz Linear PVDF Transducer Array : A Numerical Study. Advances in Acoustics and Vibration،Vol. 2011, no. 2011, pp.1-15.
https://search.emarefa.net/detail/BIM-513614
Modern Language Association (MLA)
Brodal, Eivind…[et al.]. Performance of an Ultrasonic Imaging System Based on a 45-MHz Linear PVDF Transducer Array : A Numerical Study. Advances in Acoustics and Vibration No. 2011 (2011), pp.1-15.
https://search.emarefa.net/detail/BIM-513614
American Medical Association (AMA)
Brodal, Eivind& Melandsø, Frank& Jacobsen, Svein. Performance of an Ultrasonic Imaging System Based on a 45-MHz Linear PVDF Transducer Array : A Numerical Study. Advances in Acoustics and Vibration. 2011. Vol. 2011, no. 2011, pp.1-15.
https://search.emarefa.net/detail/BIM-513614
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-513614