TY - GEN
T1 - A custom-made linear array transducer for photoacoustic breast imaging
AU - Xia, Wenfeng
AU - Piras, Daniele
AU - Heijblom, Michelle
AU - Van Hespen, Johan
AU - Van Veldhoven, Spiridon
AU - Prins, Christian
AU - Van Leeuwen, Ton G.
AU - Steenbergen, Wiendelt
AU - Manohar, Srirang
PY - 2012
Y1 - 2012
N2 - A custom-made first prototype of a linear array ultrasound transducer for breast imaging is presented. Large active area transducer elements (5 mm x 5 mm) with 1 MHz resonance frequency are chosen to obtain a relatively high sensitivity. Acoustic lenses are used to enlarge the narrow acceptance angle of such transducer elements. The minimum detectable pressure, frequency bandwidth and electrical impedance of the transducer elements are characterized. The results show the transducer has a minimum detectable pressure of 0.8 Pa, which is superior than the transducers used in the Twente Photoacoustic Mammoscope system previously developed in our group. The bandwidth of the transducer is relative small, however it can be improved when using optimized matching layer thickness in future. We also observed a strong lateral resonance at 330 kHz, which may cause problems in various aspects for a photoacoustic imaging system. We discuss the future improvement and plans for the transducer optimizations.
AB - A custom-made first prototype of a linear array ultrasound transducer for breast imaging is presented. Large active area transducer elements (5 mm x 5 mm) with 1 MHz resonance frequency are chosen to obtain a relatively high sensitivity. Acoustic lenses are used to enlarge the narrow acceptance angle of such transducer elements. The minimum detectable pressure, frequency bandwidth and electrical impedance of the transducer elements are characterized. The results show the transducer has a minimum detectable pressure of 0.8 Pa, which is superior than the transducers used in the Twente Photoacoustic Mammoscope system previously developed in our group. The bandwidth of the transducer is relative small, however it can be improved when using optimized matching layer thickness in future. We also observed a strong lateral resonance at 330 kHz, which may cause problems in various aspects for a photoacoustic imaging system. We discuss the future improvement and plans for the transducer optimizations.
KW - Breast cancer
KW - Linear array transducer
KW - Photoacoustic imaging
UR - http://www.scopus.com/inward/record.url?scp=84859334831&partnerID=8YFLogxK
U2 - https://doi.org/10.1117/12.908497
DO - https://doi.org/10.1117/12.908497
M3 - Conference contribution
SN - 9780819488664
T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE
BT - Photons Plus Ultrasound
T2 - Photons Plus Ultrasound: Imaging and Sensing 2012
Y2 - 22 January 2012 through 24 January 2012
ER -