We aimed to compare the histopathological effects of different laser fiber diameters on kidney tissue using different modulations of holmium laser. An ex vivo trial was performed employing veal kidneys. A 100 W HoYAG laser device (Cyber Ho, Quanta System, Samarate, Italy) was employed, accompanied by 550 μm and 272 μm laser fibers for all experimental procedures. Incision depth (ID), vaporization area (VA), coagulation area (CA), surface section (SS), lateral effect (LE) and total laser area (TLA, calculated as VA+CA) were assessed. Histopathological measurement results of different laser fiber diameters were compared in Standard mode (SM) and Virtual BasketTM (VB) mode. In SM and VB, a statistically significant difference was found in the mean CA values between 272 (μm) and 550 (μm) laser diameters (p: 0.02 and p
Key words: Ho:YAG, laser effect, laser fiber diameter, laser modulations
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