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pro vyhledávání: '"Alexander, Sampaleanu"'
Publikováno v:
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. 61:886-890
Synthetic transmit aperture (STA) ultrasound imaging offers near-ideal reconstruction across an entire field of view. This performance comes at the cost of SNR compared with scanning using only dynamic receive focusing. SNR may be enhanced by using s
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 61(8)
Top orthogonal to bottom electrode (TOBE) capacitive micromachined ultrasound transducers (CMUTs) are a new transducer architecture that permits large 2-D arrays to be addressed using row-column addressing. Here, we demonstrate the feasibility of 3-D
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 61(5)
Synthetic transmit aperture (STA) ultrasound imaging offers near-ideal reconstruction across an entire field of view. This performance comes at the cost of SNR compared with scanning using only dynamic receive focusing. SNR may be enhanced by using s
Publikováno v:
2013 IEEE International Ultrasonics Symposium (IUS).
Recently we introduced Top Orthogonal to Bottom Electrode (TOBE) Capacitive Micromachined Ultrasound Transducers (CMUTs) as novel 2D arrays capable of 3D ultrasound imaging using only N transmit/receive and N bias channels for an NxN array. Here we a
Publikováno v:
2013 IEEE International Ultrasonics Symposium (IUS).
Traditional synthetic aperture ultrasound scanning involves firing on one element and receiving on all elements of an array, then firing another transmit element and receiving on all elements until all transmit-receive element pairs have been sampled
Autor:
Abhijeet Kshirsagar, Deepak Rishi, Alexander Sampaleanu, Walied A. Moussa, Ryan Chee, Roger J. Zemp, Alexander Forbrich
Publikováno v:
2013 IEEE International Ultrasonics Symposium (IUS).
Novel multi-frequency Capacitive Micromachined Ultrasound Transducer (CMUT) arrays with interlaced low and high-frequency elements are investigated for novel imaging-therapy applications. Our interlaced CMUTs are designed with device dimensions small
Publikováno v:
2013 IEEE International Ultrasonics Symposium (IUS).
Traditionally dielectric charging has been viewed as an undesirable feature of Capacitive Micromachined Ultrasound Transducers (CMUTs) because charging can alter performance of devices and lead to permanent collapse. We introduce a beneficial aspect
Autor:
Alexander Sampaleanu, Roger J. Zemp
Publikováno v:
2013 IEEE International Ultrasonics Symposium (IUS).
Crossed electrode arrays, wherein electrodes are connected in individually addressable rows and columns, have been previously investigated as a means to reduce the number of channels in two-dimensional ultrasound arrays for three-dimensional imaging.