Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Marc Lukacs"'
Autor:
Natasha Alves-Kotzev, Amandeep Thind, Bogdan Neagu, Marc Lukacs, Atul Verma, Mohammed Saleem, Brian Courtney, Alan Soong
Publikováno v:
Journal of the American College of Cardiology. 70:B45-B46
Ultrasound is frequently used for guidance of minimally invasive cardiovascular interventions, such as cardiac ablations and structural heart interventions. Intracardiac echocardiography (ICE) has the ability to provide high resolution images from wi
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 57:1772-1781
With recent advances in animal models of disease, there has been great interest in capabilities for high-resolution contrast-enhanced ultrasound imaging. Microbubble contrast agents are unique in that they scatter broadband ultrasound energy because
Autor:
F. Stuart Foster, Chris Chaggares, Desmond Hirson, Andrew Needles, James Mehi, Christopher J. White, Marc Lukacs
Publikováno v:
Ultrasound in Medicine & Biology. 35:1700-1708
Most institutions now have a suite of imaging tools to follow mouse models of human disease. Micro-ultrasound is one of these tools and is second after whole-mouse fluorescence or bioluminescent imaging, in terms of installed systems. We report in th
Autor:
Emmanuel Cherin, F.S. Foster, Marc Lukacs, Ross Williams, James Mehi, Jianlma Yin, R.C. Garcia, Guofeng Pang
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 53:1719-1729
A new approach for fabricating high frequency (>20 MHz) linear array transducers, based on laser micromachining, has been developed. A 30 MHz, 64-element, 74-mum pitch, linear array design is presented. The performance of the device is demonstrated b
Publikováno v:
Ultrasonic Imaging. 27:54-64
Making fine scale (50 MHz) ultrasound transducers remains challenging. Interdigital phase bonding (IPhB), described in this paper, presents a new technique developed to make piezoelectric composites at the ultrafine scale using a conventional dicing
Publikováno v:
Integrated Ferroelectrics. 24:95-106
Piezoelectric arrays suitable for high frequency ultrasound have been fabricated using PZT sol gel composite coatings in the thickness range of 5–100μm on aluminum and platinized alumina substrates. The coatings have been quantitatively characteri
Publikováno v:
Integrated Ferroelectrics. 17:1-10
Chemical solution deposition (CSD) allows the integration of ferroelectric and piezoelectric coatings with both silicon technology and in large scale macroscopic devices. Applications of coatings as actuators, in high frequency ultrasonic transducers
Publikováno v:
2009 IEEE International Ultrasonics Symposium.
Recently, there has been a great interest in the capabilities of high-resolution ultrasound imaging. One of the applications is imaging blood vessels to assess tumor growth and response to therapy. Due to their nonlinear response, microbubble contras
Publikováno v:
2009 IEEE International Ultrasonics Symposium.
Developing a high-frequency piezo-composite material is a challenge due to the extremely small pillar dimensions. The high frequency composites made by conventional dicing saw techniques will most likely have a low ceramic volume fraction and a large
Autor:
Jianhua Yin, F. Stuart Foster, Paul A. Dayton, Emmanuel Cherin, Desmond Hirson, Ryan C. Gessner, Mike Lee, Marc Lukacs
Publikováno v:
2009 IEEE International Ultrasonics Symposium.
We report on the design, assembly and evaluation of a dual frequency mechanically scanned transducer for ultrasound bubble manipulation and real time high frequency imaging applications. A low frequency 2 MHz annulus was designed to fit on the outsid