ArticleWorld journal of urology2021
The impact of the laser fiber-tissue distance on histological parameters in a porcine kidney model.
Article in World journal of urology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 17 citations in OpenAlex.
- Thulium fiber laser vs. holmium laser enucleation of the prostate: results of a prospective randomized non-inferiority trial.World journal of urology · 2024Trial
- Histopathological assessment of depth of coagulation necrosis with Holmium, Moses, and Thulium fiber lasers in human prostate tissue.World journal of urology · 2023Article
- Comparative study of soft tissue surgery by visible and infrared laser radiation.Lasers in medical science · 2023Article
- Reasons to go for thulium-based anatomical endoscopic enucleation of the prostate.World journal of urology · 2021Review
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Authors and funding
9 authors at 3 institutions in 3 countries.
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No grant is acknowledged in the PubMed record.
Abstract
purposeTo evaluate the impact of the fiber-tissue distance on histological parameters in a porcine kidney model.
methodsFour lasers were tested at 60 W using a 600-µm bare-ended fiber: a continuous wave (cw) thulium fiber laser (TFL), a super pulsed (SP) TFL, a Ho:YAG laser, and a blue diode laser (BDL). All tissue samples were mounted on a motorized XY-translation stage. The fiber-tissue distance was changed within a range from 0to 6 mm. Ten incisions were made with each laser at each distance. Afterwards, the tissue samples were sliced with a microtome for lactate dehydrogenase staining to determine zones of thermal damage.
resultsIn contact mode, the largest incision depth was found for the cw TFL (1.7 ± 0.1 mm) compared to the SP TFL (1.0 ± 0.1 mm), BDL (0.9 ± 0.1 mm) and HoYAG laser (1.1 ± 0.1 mm), respectively. With regard to the coagulative properties, the SP TFL and the Ho:YAG laser showed comparable coagulation depths with 0.7 ± 0.1 and 0.6 ± 0.1 mm, respectively. At 2 mm fiber-tissue distance, the Ho:YAG laser was the only laser that vaporized tissue (incision depth: 0.2 ± 0.1 mm). The BDL was the only laser that caused coagulation at a distance of 3-5 mm.
conclusionOur results support the clinical observation that cw TFL must be defocused for best coagulation, while the coagulation depth of the SP TFL remains nearly constant within the range of 0-3 mm. Increasing the distance of the laser fiber to the tissue up to 5 mm did not cause significant differences with regard to coagulation depth using the BDL.
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