[20a-A25-1~10] 3.3 Biomedical optics

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)

[20a-A25-7] Development of M-sequence-based photoacoustic signal amplification under
low-power light sources

〇(M2)Kazuma Hashimoto¹, Uma Maheswari Rajagopalan¹, Jun Yamada¹, Takahiro Kono² (1.Shibaura InT.tech, 2.Tokyo Metro Univ.)

Keywords:

photoacoustic,M-sequence

"In recent years, photoacoustic imaging (PAI) based on low-power light sources has gained attention. Compared to lasers, low-power light sources have lower pulse energies and smaller acoustic waves, which degrade the signal-to-noise ratio (SNR). Pseudorandom binary sequences, such as M-sequences (PUM), are applied to improve this. This study verifies the effectiveness of signal amplification using PUM, achieving approximately 50-fold signal amplification compared to averaging."