Photoacoustic tomography is a potential and noninvasive medical imaging technology. It combines the advantages of pure optic imaging and pure ultrasound imaging. We have explored photoacoustic imaging with different filters, such as RL, SL, Modi-SL arid Kwoh-Reed, which take important roles on reconstructed images. The results of simulations and experiments show that the filter of Kwoh-Reed can restrain noise effectively and improve the contrast of images compares with the filters of RL, SL, ModiSL in the presence of strong noise. A Q-switched Nd:YAG laser operating at 532nm was used as light source. The laser had a pulse width of 7ns and a repetition frequency of 30Hz. A needle PVDF hydrophone with diameter of I mm was used to detect photoacoustic signals.

Date Published: 27 October 2006
PDF: 8 pages
Proc. SPIE 6047, Fourth International Conference on Photonics and Imaging in Biology and Medicine, 60470G (27 October 2006); doi: 10.1117/12.709910

Published in SPIE Proceedings Vol. 6047:
Fourth International Conference on Photonics and Imaging in Biology and Medicine
Kexin Xu; Qingming Luo; Da Xing; Alexander V. Priezzhev; Valery V. Tuchin, Editor(s)