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231223s2009 xx |||||o 00| ||eng c |
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|a 10.1109/TUFFC.2009.1297
|2 doi
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|a pubmed25n0644.xml
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|a (DE-627)NLM193097265
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|a (NLM)19942502
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Wygant, Ira O
|e verfasserin
|4 aut
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| 245 |
1 |
3 |
|a An integrated circuit with transmit beamforming flip-chip bonded to a 2-D CMUT array for 3-D ultrasound imaging
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|c 2009
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| 336 |
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|a Text
|b txt
|2 rdacontent
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| 337 |
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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| 500 |
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|a Date Completed 28.01.2010
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|a Date Revised 27.11.2009
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|a published: Print
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|a Citation Status MEDLINE
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|a State-of-the-art 3-D medical ultrasound imaging requires transmitting and receiving ultrasound using a 2-D array of ultrasound transducers with hundreds or thousands of elements. A tight combination of the transducer array with integrated circuitry eliminates bulky cables connecting the elements of the transducer array to a separate system of electronics. Furthermore, preamplifiers located close to the array can lead to improved receive sensitivity. A combined IC and transducer array can lead to a portable, high-performance, and inexpensive 3-D ultrasound imaging system. This paper presents an IC flip-chip bonded to a 16 x 16-element capacitive micromachined ultrasonic transducer (CMUT) array for 3-D ultrasound imaging. The IC includes a transmit beamformer that generates 25-V unipolar pulses with programmable focusing delays to 224 of the 256 transducer elements. One-shot circuits allow adjustment of the pulse widths for different ultrasound transducer center frequencies. For receiving reflected ultrasound signals, the IC uses the 32-elements along the array diagonals. The IC provides each receiving element with a low-noise 25-MHz-bandwidth transimpedance amplifier. Using a field-programmable gate array (FPGA) clocked at 100 MHz to operate the IC, the IC generated properly timed transmit pulses with 5-ns accuracy. With the IC flip-chip bonded to a CMUT array, we show that the IC can produce steered and focused ultrasound beams. We present 2-D and 3-D images of a wire phantom and 2-D orthogonal cross-sectional images (Bscans) of a latex heart phantom
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|a Journal Article
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|a Research Support, N.I.H., Extramural
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|a Research Support, U.S. Gov't, Non-P.H.S.
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| 700 |
1 |
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|a Jamal, Nafis S
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lee, Hyunjoo J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Nikoozadeh, Amin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Oralkan, Omer
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Karaman, Mustafa
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Khuri-Yakub, Butrus T
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t IEEE transactions on ultrasonics, ferroelectrics, and frequency control
|d 1986
|g 56(2009), 10 vom: 01. Okt., Seite 2145-56
|w (DE-627)NLM098181017
|x 1525-8955
|7 nnns
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| 773 |
1 |
8 |
|g volume:56
|g year:2009
|g number:10
|g day:01
|g month:10
|g pages:2145-56
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| 856 |
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|u http://dx.doi.org/10.1109/TUFFC.2009.1297
|3 Volltext
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