Effect of optical fiber diameter and laser emission mode (cw vs pulse) on tissue damage profile using 1.94 µm Tm:fiber lasers in a porcine kidney model.
In-vitro
Laser
Porcine kidney
Thulium fiber laser
Journal
World journal of urology
ISSN: 1433-8726
Titre abrégé: World J Urol
Pays: Germany
ID NLM: 8307716
Informations de publication
Date de publication:
Jun 2020
Jun 2020
Historique:
received:
09
05
2019
accepted:
30
08
2019
pubmed:
14
9
2019
medline:
26
2
2021
entrez:
14
9
2019
Statut:
ppublish
Résumé
To evaluate the ablation capacity using two Thulium fiber lasers (TFL) in a porcine kidney model. All tissue samples were mounted on a motorized stage for a precise speed of cutting. A continuous wave (cw) TFL and a super pulsed (SP) TFL were used at power settings of 60 and 120 W with 200 and 600 µm laser fibers. After lactate dehydrogenase staining, histological evaluation was performed to measure the vaporization volume (VV), ablation depth (AD), thermo-mechanical damage zones (TMZ), coagulation zones (CZ) and the carbonization grade (CG). At 120 W, no significant differences were seen between 200 and 600 µm fibers utilizing the cw TFL regarding VV (24.6 vs. 28.2 mm This experiment suggests that there is no significant difference using 200 or 600 µm laser fibers in cw or SP TFLs. However, the cw TFL produces a coagulation zone three to five times larger than the SP TFL regardless of the fiber diameter.
Identifiants
pubmed: 31515606
doi: 10.1007/s00345-019-02944-y
pii: 10.1007/s00345-019-02944-y
doi:
Substances chimiques
Thulium
8RKC5ATI4P
Types de publication
Comparative Study
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1563-1568Références
Bach T, Muschter R, Sroka R et al (2012) Laser treatment of benign prostatic obstruction: basics and physical differences. Eur Urol 61:317–325. https://doi.org/10.1016/j.eururo.2011.10.009
doi: 10.1016/j.eururo.2011.10.009
pubmed: 22033173
Bach T, Wendt-Nordahl G, Michel MS et al (2009) Feasibility and efficacy of Thulium:YAG laser enucleation (VapoEnucleation) of the prostate. World J Urol 27:541–545. https://doi.org/10.1007/s00345-008-0370-0
doi: 10.1007/s00345-008-0370-0
pubmed: 19184038
Becker B, Herrmann TRW, Gross AJ, Netsch C (2018) Thulium vapoenucleation of the prostate versus holmium laser enucleation of the prostate for the treatment of large volume prostates: preliminary 6-month safety and efficacy results of a prospective randomized trial. World J Urol. https://doi.org/10.1007/s00345-018-2321-8
doi: 10.1007/s00345-018-2321-8
pubmed: 30220043
Enikeev D, Okhunov Z, Rapoport L et al (2018) Novel thulium fiber laser for enucleation of prostate: a retrospective comparison with open simple prostatectomy. J Endourol. https://doi.org/10.1089/end.2018.0791
doi: 10.1089/end.2018.0791
pubmed: 29430969
Yaroslavsky I, Kovalenko A, Arkhipova V et al (2018) Comparison of a novel 450-nm laser with Ho:YAG (2100 nm), Tm fiber (1940 nm), and KTP (532 nm) lasers for soft-tissue ablation. In: Kang HW, Chan KF (eds) Therapeutics and diagnostics in urology 2018. SPIE, San Francisco, p 15
doi: 10.1117/12.2291103
Peters K, Michel MS, Matis U, Häcker A (2006) The isolated perfused porcine kidney model for investigations concerning surgical therapy procedures. Altex 23:203–207
pubmed: 17086351
Bach T, Huck N, Wezel F et al (2010) 70 vs 120 W thulium:yttrium-aluminium-garnet 2 micron continuous-wave laser for the treatment of benign prostatic hyperplasia: a systematic ex vivo evaluation. BJU Int 106:368–372. https://doi.org/10.1111/j.1464-410X.2009.09059.x
doi: 10.1111/j.1464-410X.2009.09059.x
pubmed: 19912204
Seitz M, Bayer T, Ruszat R et al (2009) Preliminary evaluation of a novel side-fire diode laser emitting light at 940 nm, for the potential treatment of benign prostatic hyperplasia: ex vivo and in vivo investigations. BJU Int 103:770–775. https://doi.org/10.1111/j.1464-410X.2008.08066.x
doi: 10.1111/j.1464-410X.2008.08066.x
pubmed: 18990158
Sherwood ME, Flotte TJ (2007) Improved staining method for determining the extent of thermal damage to cells. Lasers Surg Med 39:128–131. https://doi.org/10.1002/lsm.20450
doi: 10.1002/lsm.20450
pubmed: 17163480
Johnson DE, Cromeens DM, Price RE (1992) Use of the holmium:YAG laser in urology. Lasers Surg Med 12:353–363
doi: 10.1002/lsm.1900120402
Emiliani E, Talso M, Haddad M et al (2018) The true ablation effect of holmium YAG laser on soft tissue. J Endourol 32:230–235. https://doi.org/10.1089/end.2017.0835
doi: 10.1089/end.2017.0835
pubmed: 29357684
Gross AJ, Netsch C, Knipper S et al (2013) Complications and early postoperative outcome in 1080 patients after thulium vapoenucleation of the prostate: results at a single institution. Eur Urol 63:859–867. https://doi.org/10.1016/j.eururo.2012.11.048
doi: 10.1016/j.eururo.2012.11.048
pubmed: 23245687
Enikeev D, Glybochko P, Rapoport L et al (2018) Impact of endoscopic enucleation of the prostate with thulium fiber laser on the erectile function. BMC Urol 18:87. https://doi.org/10.1186/s12894-018-0400-1
doi: 10.1186/s12894-018-0400-1
pubmed: 30314492
pmcid: 6186032
Herrmann TRW, Liatsikos EN, Nagele U et al (2012) EAU guidelines on laser technologies. Eur Urol 61:783–795. https://doi.org/10.1016/j.eururo.2012.01.010
doi: 10.1016/j.eururo.2012.01.010
pubmed: 22285403
Iacono F, Prezioso D, Di Lauro G et al (2012) Efficacy and safety profile of a novel technique, ThuLEP (Thulium laser enucleation of the prostate) for the treatment of benign prostate hypertrophy. Our experience on 148 patients. BMC Surg 12(Suppl 1):S21. https://doi.org/10.1186/1471-2482-12-S1-S21
doi: 10.1186/1471-2482-12-S1-S21
pubmed: 23173611
pmcid: 3499280
Kronenberg P, Traxer O (2014) In vitro fragmentation efficiency of holmium: yttrium-aluminum-garnet (YAG) laser lithotripsy–a comprehensive study encompassing different frequencies, pulse energies, total power levels and laser fibre diameters. BJU Int 114:261–267. https://doi.org/10.1111/bju.12567
doi: 10.1111/bju.12567
pubmed: 24219145
Kronenberg P, Traxer O (2015) Update on lasers in urology 2014: current assessment on holmium:yttrium-aluminum-garnet (Ho:YAG) laser lithotripter settings and laser fibers. World J Urol 33:463–469. https://doi.org/10.1007/s00345-014-1395-1
doi: 10.1007/s00345-014-1395-1
pubmed: 25185524
Wezel F, Häcker A, Gross AJ et al (2010) Effect of pulse energy, frequency and length on holmium:yttrium-aluminum-garnet laser fragmentation efficiency in non-floating artificial urinary calculi. J Endourol 24:1135–1140. https://doi.org/10.1089/end.2010.0115
doi: 10.1089/end.2010.0115
pubmed: 20575700
Finley DS, Petersen J, Abdelshehid C et al (2005) Effect of holmium:YAG laser pulse width on lithotripsy retropulsion in vitro. J Endourol 19:1041–1044. https://doi.org/10.1089/end.2005.19.1041
doi: 10.1089/end.2005.19.1041
pubmed: 16253078
Fried NM, Murray KE (2005) High-power thulium fiber laser ablation of urinary tissues at 1.94 microm. J Endourol 19:25–31. https://doi.org/10.1089/end.2005.19.25
doi: 10.1089/end.2005.19.25
pubmed: 15735378
Chen C-H, Chiang P-H, Lee W-C et al (2012) High-intensity diode laser in combination with bipolar transurethral resection of the prostate: a new strategy for the treatment of large prostates (> 80 ml). Lasers Surg Med 44:699–704. https://doi.org/10.1002/lsm.22081
doi: 10.1002/lsm.22081
pubmed: 23018756