TY - JOUR
T1 - Focused intravascular ultrasonic probe using dimpled transducer elements
AU - Chen, Y.
AU - Qiu, W. B.
AU - Lam, Kwok Ho
AU - Liu, B. Q.
AU - Jiang, X. P.
AU - Zheng, H. R.
AU - Luo, H. S.
AU - Chan, H. L.W.
AU - Dai, Jiyan
PY - 2015/1/1
Y1 - 2015/1/1
N2 - High-frequency focused intravascular ultrasonic probes were fabricated in this study using dimple technique based on PMN-PT single crystal and lead-free KNN-KBT-Mn ceramic. The center frequency, bandwidth, and insertion loss of the PMN-PT transducer were 34 MHz, 75%, and 22.9 dB, respectively. For the lead-free probe, the center frequency, bandwidth, and insertion loss were found to be 40 MHz, 72%, and 28.8 dB, respectively. The ultrasonic images of wire phantom and vessels with good resolution were obtained to evaluate the transducer performance. The -6 dB axial and lateral resolutions of the PMN-PT probe were determined to be 58 μm and 131 μm, respectively. For the lead-free probe, the axial and lateral resolutions were found to be 44 μm and 125 μm, respectively. These results suggest that the mechanical dimpling technique has good potential in preparing focused transducers for intravascular ultrasound applications.
AB - High-frequency focused intravascular ultrasonic probes were fabricated in this study using dimple technique based on PMN-PT single crystal and lead-free KNN-KBT-Mn ceramic. The center frequency, bandwidth, and insertion loss of the PMN-PT transducer were 34 MHz, 75%, and 22.9 dB, respectively. For the lead-free probe, the center frequency, bandwidth, and insertion loss were found to be 40 MHz, 72%, and 28.8 dB, respectively. The ultrasonic images of wire phantom and vessels with good resolution were obtained to evaluate the transducer performance. The -6 dB axial and lateral resolutions of the PMN-PT probe were determined to be 58 μm and 131 μm, respectively. For the lead-free probe, the axial and lateral resolutions were found to be 44 μm and 125 μm, respectively. These results suggest that the mechanical dimpling technique has good potential in preparing focused transducers for intravascular ultrasound applications.
KW - Dimple technique
KW - Intravascular ultrasound
KW - Lead-free ceramic
KW - PMN-PT single crystal
UR - http://www.scopus.com/inward/record.url?scp=84912001654&partnerID=8YFLogxK
U2 - 10.1016/j.ultras.2014.07.011
DO - 10.1016/j.ultras.2014.07.011
M3 - Journal article
C2 - 25108608
SN - 0041-624X
VL - 56
SP - 227
EP - 231
JO - Ultrasonics
JF - Ultrasonics
ER -