Dosimetry study of photothermal ablation for the treatment of urethral stricture

Urethral stricture is a condition causing urethral narrowing due to chronic inflammation or scarring, affecting men over 55. It has the potential to cause complications such as urinary tract infections and kidney problems. Treatment methods include urethral dilatation, incision, or anastomosis. We propose a new treatment method, near-infrared laser-based cylindrical photothermal ablation, to minimize recurrence and treatment area. The 1470 nm laser for numerical simulations in porcine liver and urethra tissue environments. Ex vivo urethra experiments were conducted using the same laser irradiation conditions. The results show that the 15 W for 5 s condition could ablate the mucosa area of the stricture site in the urethra.