▶ Previous Artlcle: #15-5. Long-pulsed Alexandrite Laser

 

 

 

Liver spots are irradiated with the parameters of pulse duration at 0.3 to 1ms, spot size at 3mm, fluence at 30~80J/cm2, and pre & post-cooling because there are many cases where they have thicker lesions and weaker chromophores than lentigo.

 

Once a burst of sound (‘tic’) is heard during irradiation or a lesion turns gray-white, you can go on to treatment of another lesion.

 

Especially for thick liver spots, it is advised to first check if there is any lesion left after crusts peel away and subsequently decide whether to enter the secondary treatment, instead of trying to remove them only at a time, in order to reduce the likelihood of side effects such as red marks and pigmentation and shorten the recovery period.

 

 

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For flat warts or small warts, each of lesions is irradiated with the parameters of pulse duration at 0.3ms, spot size at 2mm, and fluence at 30 to 50J/cm2 but without cooling.

 

The end point for the treatment of each lesion is a burst of sound (‘tic’).

 

The advantages for this treatment are very simple procedures and short recovery time compared to other treatments with CO2 Laser or Er:YAG Laser.

 

The junctional nevus can be directly removed with the parameters of pulse duration at 0.3ms, spot size at 2 to 3mm, and fluence at 50J/cm2.

 

For the intradermal nevus, CO2 Laser or Er:YAG Laser is applied to remove them between the epidermis and the upper layer of the dermis using the window technique, and the remaining lesions deeper within the upper dermal layer are treated with the Long-pulsed Alexandrite Laser.

 

This method makes it possible to minimize scarring when lesions are removed from deep within the dermis while effectively treating the nevus. 

 

 

 

 

 

-To be continued