Q-switched Ruby Laser Treatment of Tattoos – a 9 year Experience : published in 1990

My first ever publication! That was a long time ago when I was just a lad… Me! As a lad…   We published this article in the British Journal of Plastic Surgery (our boss was a plastic surgeon!) to tell the world about our clinical work of 9 years which clearly showed that the ruby… Continue reading Q-switched Ruby Laser Treatment of Tattoos – a 9 year Experience : published in 1990

“Thermal Relaxation Times” – Body Language magazine

Article This article discusses our take on TRTs in a (relatively) non-mathematical way. It discusses tissue denaturation using the Arrhenius Damage Equation which describes the ‘change of state of one species into another’. It also introduces the concept of ‘Omega’ – a parameter which describes the amount of tissue damaged by the heating process. I… Continue reading “Thermal Relaxation Times” – Body Language magazine

“Thermal relaxation times: an outdated concept in photothermal treatments”

Article This is an article I co-authored with my good friend, PA Torstensson, about our interpretation of the idea that thermal relaxation times (TRTs) can be used to determine the pulse duration of laser energy when applied to skin conditions (hair, blood vessels etc). We disagree with this idea – as the title hints at!… Continue reading “Thermal relaxation times: an outdated concept in photothermal treatments”

How bright is your Q-switched Nd:YAG laser?

Have you ever wondered how bright your laser is? Given that it outputs millions of watts of light (in both 1064 and 532nm) you might imagine that it is quite bright…. Well I took a couple of videos to see for myself. Our laser safety glasses are rated at OD7 – that means if 10… Continue reading How bright is your Q-switched Nd:YAG laser?

532nm treatment of a tattoo – what does it actually look like?

Just thought I’d post some photos which I took earlier to view the brightness of the 532nm wavelength compared with the 1064nm line on a tattoo… Note: all photos and videos were taken using an iPhone 6.      The top photo shows the tattoo just before the laser is fired at 1064 nm. The… Continue reading 532nm treatment of a tattoo – what does it actually look like?