Concentration of Indocyanine Green Does Not Significantly Influence Lymphatic Function as Assessed by Near-Infrared Imaging
Identifieur interne : 004420 ( Main/Curation ); précédent : 004419; suivant : 004421Concentration of Indocyanine Green Does Not Significantly Influence Lymphatic Function as Assessed by Near-Infrared Imaging
Auteurs : M. B. Aldrich ; C. Davies-Venn ; B. Angermiller ; H. Robinson ; W. Chan ; S. Kwon ; E. M. Sevick-MuracaSource :
- Lymphatic Research and Biology [ 1539-6851 ] ; 2012.
Abstract
Absorbance of near-infrared (600–800 nm) light by the tissue components water, melanin, and hemoglobin is minimal. This property allows the use of near-infrared-emitting fluorophores for noninvasive,
We measured lymph propulsive velocity and frequency using an imaging system composed of a laser diode for excitation of the dye, an image intensifier, and an intensified charge-coupled device (ICCD) camera to capture real-time images. At 0.32, 0.645, and 1.3 m
The use of different concentrations of ICG and the use of other near-infrared fluorophores for optical imaging of lymphatics does not significantly affect lymphatic propulsive velocity or frequency.
Url:
DOI: 10.1089/lrb.2011.0003
PubMed: 22416911
PubMed Central: 3311403
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PMC:3311403Le document en format XML
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<front><div type="abstract" xml:lang="en"><title>Abstract</title>
<sec><title>Background</title>
<p>Absorbance of near-infrared (600–800 nm) light by the tissue components water, melanin, and hemoglobin is minimal. This property allows the use of near-infrared-emitting fluorophores for noninvasive, <italic>in vivo</italic>
, real-time imaging of tissue, without the interference of autofluorescence experienced with imaging in other wavelength ranges. Near-infrared (NIR) fluorescence imaging has been used to noninvasively image lymphatic architecture and pumping function in animals, as well as in humans. The effects of different doses of a NIR dye, indocyanine green (ICG), on lymphatic function have been questioned. This study aims to address these concerns in the context of a mouse inguinal-to-axillary lymphatic imaging model.</p>
</sec>
<sec><title>Methods and Results</title>
<p>We measured lymph propulsive velocity and frequency using an imaging system composed of a laser diode for excitation of the dye, an image intensifier, and an intensified charge-coupled device (ICCD) camera to capture real-time images. At 0.32, 0.645, and 1.3 m<italic>M</italic>
ICG, no significant differences in lymphatic propulsive velocity or frequency were observed. Additionally, the use of other NIR imaging agents did not result in significant differences.</p>
</sec>
<sec><title>Conclusions</title>
<p>The use of different concentrations of ICG and the use of other near-infrared fluorophores for optical imaging of lymphatics does not significantly affect lymphatic propulsive velocity or frequency.</p>
</sec>
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