Focus of Study is: Near Infrared Fluorescence Imaging Clinical Trial
The aim of this study is to examine the use of Near Infrared Fluorescence imaging on
lymphatic vessels in humans.
Different parameters that reflect lymphatic function will be tested for intra and inter
individual reproducibility.
We use 10 healthy test subjects and examine their lymphatic system. All subjects are healthy
men between the ages of 20 and 30.
When the fluorescent dye "indocyanine green", has been injected into the skin on the
patients feet, it will be transported through the lymph vessels, resulting in clear
visualization of the vessels, using a laser and a EM-CCD camera.
On both legs we examine the frequency of vessel contraction and the velocity of lymph moving
in vessels. We furthermore use several methods to quantify the vessel function such as the
refill time of a vessel, (manually emptied vessel and refill time of 10 cm of a vessel), and
pumping pressure (at what pressure lymph can pass a blood pressure cuff).
We investigate the activity of vessels over time, and after several interventions such as
exercise, and water baths of the foot at different temperatures.
The patients are examined for approximately 4 hours and wil be examined again 14 days later.
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