2011
DOI: 10.1155/2011/984596
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Performance of an Ultrasonic Imaging System Based on a 45‐MHz Linear PVDF Transducer Array: A Numerical Study

Abstract: 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 sc… Show more

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Cited by 12 publications
(14 citation statements)
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“…In the vascular system, an artery image can be acquired with an intravascular ultrasound (IVUS) transducer using a miniaturized ultrasonic transducer built-in catheter [41]. Additionally, a 1D linear array transducer operating at high frequencies is used to acquire high-resolution images of a tendon, muscle, ligament, cornea, and eyeball in the field of orthopedics or ophthalmology [42]. Continuing development of transducer technology is playing a key role in enhancing the 3-D imaging performance to replace current 2-D sonography by providing real-time capability and interactivity.…”
Section: Applicationmentioning
confidence: 99%
“…In the vascular system, an artery image can be acquired with an intravascular ultrasound (IVUS) transducer using a miniaturized ultrasonic transducer built-in catheter [41]. Additionally, a 1D linear array transducer operating at high frequencies is used to acquire high-resolution images of a tendon, muscle, ligament, cornea, and eyeball in the field of orthopedics or ophthalmology [42]. Continuing development of transducer technology is playing a key role in enhancing the 3-D imaging performance to replace current 2-D sonography by providing real-time capability and interactivity.…”
Section: Applicationmentioning
confidence: 99%
“…The numerical investigation was limited to a two-dimensional (2D) axisymmetric geometry, were scattering from a single microparticles settled on the chamber bottom was modeled both in the time as well as in the frequency domain. This software has previously been used to study for example, transducer properties [10,22], conductivity behavior of the electrodes [11] as well as acoustical scattering from microparticles and ultrasonic contrast agents [18]. The geometry used in the numerical model (including backing material, electrodes, piezoelectric material, water chamber, microspheres and reflecting glass surface) are shown in the Fig.…”
Section: Numerical Characterizationmentioning
confidence: 99%
“…Material constants for the Polystyrene microspheres (density 1050 Kg / m 3 , Poisson's ratio 0.33, Young's modulus 3.513 GPa), PEI and P(VDF-TrFE) can be found in Refs. [10,11,22]. …”
Section: Numerical Characterizationmentioning
confidence: 99%
“…This software, which uses a Finite Element Method (FEM) to solve partial differential equations, has also previously been used to solve transducer models [6]. For our model, the elastic and piezoelectric materials are represented as linear plain strain models with loss factors 0.2 and 0.02 for PVDF and PEI, respectively, approximated by a Rayleigh damping model.…”
Section: Numerical Characterizationmentioning
confidence: 99%