I constantly hear laser users talking about the ‘energy’ they are using to treat tattoos, hair, blood vessels etc. However, it is clear that many don’t really understand what they mean. I often read about treatments using “500” or “250” or “never above 600” joules, millijoules or whatever!! I think these are the numbers… Continue reading Laser energy, energy density, fluence, leprechauns and star bursts……
Nowadays, it is possible to purchase Q-switched Nd:YAG lasers with a single YAG rod, or with two rods. So, what is the difference and is it important? To understand why a laser might have two rods instead of one we should look at the basic design of a laser first. Basic laser cavity A… Continue reading Single or Double Rod Nd:YAG Lasers?
I’ve just received acknowledgement that my paper – High speed ink aggregates are ejected from tattoos during Q‐switched Nd:YAG laser treatments has been accepted for publication in Lasers in Surgery and Medicine. It should be available for public consumption next month, but if you want a wee preview just let me know. Mike.
I can now offer the following ‘refresher courses’: Laser tattoo removal: Choosing the correct settings Which laser is best? How does it actually work? Ink colours Pain management Managing patient expectations Minimising risk Laser/IPL removal of hair, vessel, pigmentation + skin rejuvenation Choosing the correct settings… Understanding the light-tissue interactions The critical importance of… Continue reading Refresher Courses
Throughout the last few years I have heard some people (usually sales people) trying to bamboozle potential customers with various nonsense claims. This is to be expected I suppose, but one which does irritate me greatly is the ‘active’ vs ‘passive’ Q-switch debate!! So, I thought I’d write a wee piece about this topic,… Continue reading Q-switches: Passive vs Active?
Laser tattoo removal has been available commercially since we opened the world’s first private clinic to offer this treatment in Glasgow, Scotland in 1989 following our groundbreaking clinical research program in Canniesburn Hospital, Glasgow during the 1980s (see our 1990 publication in the British Journal of Plastic Surgery). We used the Q-switched ruby laser which… Continue reading Laser Tattoo Removal – the important considerations
A new publication just went live on the British Journal of Dermatology site at http://onlinelibrary.wiley.com/wol1/doi/10.1111/bjd.16130/abstract. It discusses my observations on non-tattooed skin (my own) following irradiation with a Q-switched 532nm laser. I found that there is a significant amount of damage in the capillary plexus soon after irradiation. This is not surprising since the absorption… Continue reading “Q-switched 532nm laser energy causes significant vascular damage in the capillary plexus – how does this affect laser tattoo removal?”