TY - JOUR
T1 - Improvement of piezoelectric photoacoustic imaging using two images at different modulation frequencies
AU - Nagata, Yoshihiko
AU - Ogiso, Hisato
AU - Yamanaka, Kazushi
AU - Koda, Toshio
PY - 1989/1/1
Y1 - 1989/1/1
N2 - A new method is presented to improve piezoelectric photoacoustic imaging. This technique uses two images at different modulation frequencies to cancel the background caused by the coupling condition and the spatially nonuniform sensitivity of the piezoelectric sensor. It is found that the image of an object with sub-surface defects obtained by this technique is much clearer than a conventional image. The obtained photoacoustic image is compared with the ultrasonic image.
AB - A new method is presented to improve piezoelectric photoacoustic imaging. This technique uses two images at different modulation frequencies to cancel the background caused by the coupling condition and the spatially nonuniform sensitivity of the piezoelectric sensor. It is found that the image of an object with sub-surface defects obtained by this technique is much clearer than a conventional image. The obtained photoacoustic image is compared with the ultrasonic image.
UR - http://www.scopus.com/inward/record.url?scp=84916184521&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84916184521&partnerID=8YFLogxK
U2 - 10.7567/JJAPS.28S1.246
DO - 10.7567/JJAPS.28S1.246
M3 - Article
AN - SCOPUS:84916184521
SN - 0021-4922
VL - 28
SP - 246
EP - 248
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
IS - S1
ER -