What are the technical and physical Differences between Laser and LED Phototherapy?

摘要

Laser and LED devices are used in Phototherapy. Prices for LED and laser equipment vary from some 10 Euro (not allowed for medical use) to 100000 Euro. What are the differences? Fig. 1 shows some devices working as well with laser, and with LED. Especially the new Modulo serie (Sedatelec) and some EMRED devices allow to interchange between laser and LED modules - we would be glad to know of your respective experiences!