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Findings from Shenzhen University Provides New Data about Sensor Research (Fabrication and performance of a 64 x 5 element 1.5D active matrix array...

August 12, 2014



Findings from Shenzhen University Provides New Data about Sensor Research (Fabrication and performance of a 64 x 5 element 1.5D active matrix array transducer for medical imaging)

By a News Reporter-Staff News Editor at Journal of Technology -- Fresh data on Sensor Research are presented in a new report. According to news reporting from Shenzhen, People's Republic of China, by VerticalNews journalists, research stated, "Compared to 1D phased array probes with a fixed focus in elevation, multi-row arrays can significantly improved the slice thickness throughout image by expanding aperture and dynamic focusing in elevation. This paper describes the design and measurement of a 64 x 5 element 1.5D ultrasonic transducer that enables dynamic focusing and apodization in the elevation direction."

The news correspondents obtained a quote from the research from Shenzhen University, "We manufactured a transducer with an aperture size of 24 mm x 16 mm using a widely used piezoelectric ceramic (PZT-5H) as the piezoelectric vibrator. The measured center frequency and -6 dB fractional bandwidth of the 1.5D transducer were 3 MHz and 79%, respectively. A two-way insertion loss of -58 dB was obtained at the average center frequency. We carried out a sound field simulation and measured the actual transmitting (one-way) sound field data by using a hydrophone. In this way the sound beam profile in elevation direction was obtained, showing the -6 dB slice thickness measured was about 2 mm throughout the whole range of interest (from near to far field)."

According to the news reporters, the research concluded: "This provided a much greater focal depth and much better imaging resolution in the elevation direction than can be achieved by using 1D probe."

For more information on this research see: Fabrication and performance of a 64 x 5 element 1.5D active matrix array transducer for medical imaging. Sensors and Actuators A-Physical, 2014;214():81-87. Sensors and Actuators A-Physical can be contacted at: Elsevier Science Sa, PO Box 564, 1001 Lausanne, Switzerland.

Our news journalists report that additional information may be obtained by contacting J. Peng, Shenzhen Univ, Guangdong Key Lab Biomed Measurements & Ultrasoun, Dept. of Biomed Engn, Natl Reg Key Engn Lab Med UltrasoundSch Med, Shenzhen 518060, People's Republic of China. Additional authors for this research include W.J. Wang, H. Tang, T.F. Wang and S.P. Chen.

Keywords for this news article include: Asia, Shenzhen, Sensor Research, People's Republic of China

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Journal of Technology


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