Open AccessEnhanced photothermal hemostasis using dual wavelengths in an in vivo leporine kidney model
Author(s) -
Sung Won Kim,
Jieun Hwang,
Jason Rongwei Xuan,
T. C. Hasenberg,
Hyun Wook Kang
Publication year - 2019
Publication title -
biomedical optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.10.005198
Subject(s) - hemostasis , photothermal therapy , materials science , irradiation , laser , in vivo , biomedical engineering , optics , wavelength , medicine , optoelectronics , nanotechnology , surgery , physics , microbiology and biotechnology , nuclear physics , biology
The current study investigated the hemostatic effect of dual wavelengths on in vivo leporine kidney tissue using 532-nm and 980-nm laser systems. Three irradiation modes, 532 nm, 980 nm, and dual (532 and 980 nm) modes, were compared to test non-contact photothermal hemostasis on 36 bleeders in the kidney models. Each bleeder was flushed with saline during the irradiation. The dual mode achieved complete hemostasis more rapidly than the single modes (4.0 ± 1.4 s for dual vs. no hemostasis for 532 nm and 10.0 ± 1.3 s for 980 nm; p < 0.001). Application of 60 W from the dual wavelengths expanded the surface area of the thermal lesion (up to 60%). In vivo dual-wavelength irradiation achieved more rapid and complete hemostasis with ∼2 mm coagulation depth than the single-wavelength irradiation.