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Dynamic Changes in Fluid Temperatures during Laser Irradiation Using Various Laser Modes: A Thermography-Based In Vitro Phantom Study
The differences in dynamic thermal changes during laser lithotripsy between various laser pulse modes are unclear. We used thermography to evaluate the temporal changes in high-temperature areas during laser activation in order to compare different laser pulse modes. An unroofed artificial kidney mo...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9961509/ https://www.ncbi.nlm.nih.gov/pubmed/36835944 http://dx.doi.org/10.3390/jcm12041409 |
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author | Yamashita, Shimpei Inoue, Takaaki Imai, Satoshi Maruyama, Yohei Iwahashi, Yuya Deguchi, Ryusuke Kohjimoto, Yasuo Fujisawa, Masato Hara, Isao |
author_facet | Yamashita, Shimpei Inoue, Takaaki Imai, Satoshi Maruyama, Yohei Iwahashi, Yuya Deguchi, Ryusuke Kohjimoto, Yasuo Fujisawa, Masato Hara, Isao |
author_sort | Yamashita, Shimpei |
collection | PubMed |
description | The differences in dynamic thermal changes during laser lithotripsy between various laser pulse modes are unclear. We used thermography to evaluate the temporal changes in high-temperature areas during laser activation in order to compare different laser pulse modes. An unroofed artificial kidney model was used for the experiments. The laser fired for 60 s with a laser setting of 0.4 J/60 Hz in the following four different laser pulse modes without saline irrigation: short pulse mode (SPM), long pulse mode (LPM), virtual basket mode (VBM) and Moses mode (MM). Using the first 30 s of moving images, we compared the ratio of a high-temperature area of >43 °C to the total area every 5 seconds. The dynamic changes in fluid temperatures were shown to be different between the laser pulse modes. The extent of the high-temperature areas during the laser activation was large in the LPM and MM compared with the SPM and VBM. While the high-temperature areas expanded in an anterior direction in the early laser irradiation period using the LPM, they spread in a posterior direction in the early laser activation period using the MM. Although only the temperature profile in one specific plane was investigated, these results are considered useful for preventing thermal injuries during retrograde intrarenal surgeries. |
format | Online Article Text |
id | pubmed-9961509 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-99615092023-02-26 Dynamic Changes in Fluid Temperatures during Laser Irradiation Using Various Laser Modes: A Thermography-Based In Vitro Phantom Study Yamashita, Shimpei Inoue, Takaaki Imai, Satoshi Maruyama, Yohei Iwahashi, Yuya Deguchi, Ryusuke Kohjimoto, Yasuo Fujisawa, Masato Hara, Isao J Clin Med Article The differences in dynamic thermal changes during laser lithotripsy between various laser pulse modes are unclear. We used thermography to evaluate the temporal changes in high-temperature areas during laser activation in order to compare different laser pulse modes. An unroofed artificial kidney model was used for the experiments. The laser fired for 60 s with a laser setting of 0.4 J/60 Hz in the following four different laser pulse modes without saline irrigation: short pulse mode (SPM), long pulse mode (LPM), virtual basket mode (VBM) and Moses mode (MM). Using the first 30 s of moving images, we compared the ratio of a high-temperature area of >43 °C to the total area every 5 seconds. The dynamic changes in fluid temperatures were shown to be different between the laser pulse modes. The extent of the high-temperature areas during the laser activation was large in the LPM and MM compared with the SPM and VBM. While the high-temperature areas expanded in an anterior direction in the early laser irradiation period using the LPM, they spread in a posterior direction in the early laser activation period using the MM. Although only the temperature profile in one specific plane was investigated, these results are considered useful for preventing thermal injuries during retrograde intrarenal surgeries. MDPI 2023-02-10 /pmc/articles/PMC9961509/ /pubmed/36835944 http://dx.doi.org/10.3390/jcm12041409 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Yamashita, Shimpei Inoue, Takaaki Imai, Satoshi Maruyama, Yohei Iwahashi, Yuya Deguchi, Ryusuke Kohjimoto, Yasuo Fujisawa, Masato Hara, Isao Dynamic Changes in Fluid Temperatures during Laser Irradiation Using Various Laser Modes: A Thermography-Based In Vitro Phantom Study |
title | Dynamic Changes in Fluid Temperatures during Laser Irradiation Using Various Laser Modes: A Thermography-Based In Vitro Phantom Study |
title_full | Dynamic Changes in Fluid Temperatures during Laser Irradiation Using Various Laser Modes: A Thermography-Based In Vitro Phantom Study |
title_fullStr | Dynamic Changes in Fluid Temperatures during Laser Irradiation Using Various Laser Modes: A Thermography-Based In Vitro Phantom Study |
title_full_unstemmed | Dynamic Changes in Fluid Temperatures during Laser Irradiation Using Various Laser Modes: A Thermography-Based In Vitro Phantom Study |
title_short | Dynamic Changes in Fluid Temperatures during Laser Irradiation Using Various Laser Modes: A Thermography-Based In Vitro Phantom Study |
title_sort | dynamic changes in fluid temperatures during laser irradiation using various laser modes: a thermography-based in vitro phantom study |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9961509/ https://www.ncbi.nlm.nih.gov/pubmed/36835944 http://dx.doi.org/10.3390/jcm12041409 |
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