研究目的
Investigating the utility of common surgical dyes under direct visualization and infrared laser angiography.
研究成果
Black permanent marking ink allows visualization of surgical markings under infrared laser angiography, whereas gentian violet and methylene blue did not interfere with infrared visualization. Indocyanine green suspended in ethyl alcohol is a contemporary marking pen that may be used to outline anatomical surface landmarks under infrared laser angiography.
研究不足
The study was limited to a small number of subjects (6) spanning the Fitzpatrick scale. The findings may not be generalizable to all skin types or surgical scenarios.
1：Experimental Design and Method Selection:
The study involved assessing the photometric properties of surgical dyes under direct visualization and infrared laser angiography.
2：Sample Selection and Data Sources:
Six subjects spanning the Fitzpatrick scale were selected, with their forearms marked using commercially available inks.
3：List of Experimental Equipment and Materials:
Surgical marking pens of interest included black permanent marker, gentian violet, methylene blue, and ICG suspended in ethyl alcohol. Infrared laser imaging was performed using a SPY Elite fluorescence imaging system.
4：Experimental Procedures and Operational Workflow:
Inks visible under both direct visualization and infrared laser angiography were considered a positive result. Black permanent ink lacking infrared-absorbing pigments and colored inks were used as negative controls.
5：Data Analysis Methods:
The visibility of ink pigments was assessed based on patient skin tone and under infrared laser angiography.
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