A simulation study of photoacoustic imaging for bladder cancer

In recent years, photoacoustic imaging has become a new non-destructive medical imaging technology. In this paper, a photoacoustic imaging technology for human bladder cancer was proposed, which combined transurethral endoscopic photoacoustic excitation in bladder cavity with a transrectal photoacoustic signal detection. By establishing a three-dimensional( 3D) optical model of bladder tissue, the distribution of light energy deposition in the bladder tissue was obtained through the 3D Monte Carlo method. The velocity potential was used to calculate the photoacoustic signal, and the scanning photoacoustic image of bladder tissue was reconstructed. The results showed that the proposed photoacoustic imaging technique with transurethral photoacoustic excitation in bladder cavity was expected to detect early bladder cancer nondestructively.