Indocyanine green (ICG) lymphography, a key diagnostic tool for lymphedema, is influenced by the dilution process of ICG dye, impacting patient experience. In our study, we assessed three different ICG diluents-water for injection (WFI), normal saline (NS), and Dextrose plus human albumin-in five healthy volunteer individuals undergoing superficial lymphography of the upper limb over 3 weeks. Results indicated that NS, as a diluent for ICG, caused the least discomfort during injection, in contrast to WFI, which led to the highest levels of discomfort. Transport time of ICG from the injection site to the axillary lymph nodes was notably shorter in intradermal injections than in subdermal injections. Our findings advocate for using NS as the optimal and cost-effective diluent for ICG, enhancing patient experience.
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