21 June 1999 Improved images by a 3.5-MHz array probe using 0.91Pb(Zn1/3Nb2/3)O3-0.09PbTiO3 single crystal
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Abstract
A 96-channel phased array probe using a single-plate 0.91Pb(Zn1/3Nb2/3)O3-0.09PbTiO3 (PZNT 91/9) single-crystal transducer with dimensions of 14 X 20 mm has been fabricated to realize greater sensitivity and broader bandwidth properties. The center frequency of the probe, 3.5 MHz, was selected to include the bandwidths of two conventional lead zirconate titanate (PZT) ceramic probes with center frequencies of 2.5 and 3.75 MHz. A solder paste was used to connect a flexible printed circuit to the PZNT 91/9 transducer. The echo amplitude of the PZNT 91/9 probe revealed good linearity in a practical voltage range. The echo amplitude of the PZNT 91/9 probe is about 6 dB higher than those of the two PZT probes, and the fractional bandwidth is 30 and 25 percentage points wider, respectively. Ultrasonic image obtained by the PZNT 91/9 probe realized both the penetration of the 2.5-MHz PZT probe and the resolution of the 3.75-MHz PZT probe.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shiroh Saitoh, Shiroh Saitoh, Takashi Takeuchi, Takashi Takeuchi, Tsuyoshi Kobayashi, Tsuyoshi Kobayashi, Kouichi Harada, Kouichi Harada, Senji Shimanuki, Senji Shimanuki, Yohachi Yamashita, Yohachi Yamashita, "Improved images by a 3.5-MHz array probe using 0.91Pb(Zn1/3Nb2/3)O3-0.09PbTiO3 single crystal", Proc. SPIE 3664, Medical Imaging 1999: Ultrasonic Transducer Engineering, (21 June 1999); doi: 10.1117/12.350669; https://doi.org/10.1117/12.350669
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