Benign prostatic hyperplasia (BPH) is one of the most common disorders and the most common cause of lower urinary tract symptoms (LUTS) in elderly men [1]. Transurethral resection of the prostate (TURP) is considered the gold standard treatment; however, laser prostatectomy has several advantages with regard to reduced catheterization and morbidity particularly in high-risk patients [2]. Of the many lasers that can be used in the laser prostatectomy, the GreenLight potassium-titanyl-phosphate (KTP) laser is one of the most commonly used [3]. The optimum outcome of this laser procedure is ablation with minimal or no coagulation. Our objective was to experimentally and theoretically characterize the KTP laser-tissue interactions in order to understand the laser and tissue parameters that lead to an optimal outcome.

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