Fluorescent property of indocyanine green (ICG) rubber ring using LED and laser light sources.
Fluorescent properties of ICG depends on solvent. Fluorescent characteristics of ICG rubber rings and optimized detection system condition were identified. The fluorescent rubber rings are produced by drying mixture of ICG solution and liquid rubber. LED and laser light sources were used to test differences between them. Other variables are ICG molar concentration (100, 80, 60, 40, 20, 10μM), excitation light spectrum (740, 760, 785nm) and angle of view (0~80°). We observed that ICG ring emitted fluorescence at longer wavelength than in blood and aqueous state. Observation angle between 0 and 50 provided similar brightness of images, while others are significantly less luminous. Excitation light between 740~760nm ensured non-overlapping spectrums of excitation light and fluorescence emission.
Department of Biomechatronics, Sung Kyun Kwan University, Suwon 440-746, South Korea.
Nha Young
NY
Hong
Biomedical Engineering Branch, Division of Convergence Technology, National Cancer Center, Goyang 410-769, South Korea.
Hong Rae
HR
Kim
Biomedical Engineering Branch, Division of Convergence Technology, National Cancer Center, Goyang 410-769, South Korea.
Hyun Min
HM
Lee
Biomedical Engineering Branch, Division of Convergence Technology, National Cancer Center, Goyang 410-769, South Korea; Center for Colorectal Cancer, National Cancer Center, Goyang, 410-760, South Korea.
Dae Kyung
DK
Sohn
Biomedical Engineering Branch, Division of Convergence Technology, National Cancer Center, Goyang 410-769, South Korea.
Kwang Gi
KG
Kim
(140.3460) Lasers; (160.2540) Fluorescent and luminescent materials; (170.6280) Spectroscopy, fluorescence and luminescence