After injection, the injection sites will be covered with tape to avoid camera oversaturation, and to avoid spreading of ICG on the skin and undesirable fluorescent background on the images. To obtain fluorescence imaging of leg lymphatic flow, a near-infrared fluorescence imaging system will be used (Photo Dynamic Eye, or PDE camera from Hamamatsu Photonics - Japan). The camera is maintained in a fix position, 15 cm above the investigation field, by a holding system from Noga Tools. The amplified analogic signal is transformed into a digital signal by a converter from Terratec (Model Grabster AV 450 MX) and transferred to a monitor, which allows to visualize lymphatic network and lymph flow in real-time. Images will be recorded on a dedicated external hard disk drive Iomega, model MDHDU.