Variable pulsewidth vascular system for dermatology | (1994) | Gustafsson | Publications | SPIE

via Variable pulsewidth vascular system for dermatology | (1994) | Gustafsson | Publications | Spie    This report describes the world’s first IPL system, developed by Morgan Gustafsson in the early 1990s. Back then we didn’t call it IPL – that name came later. Morgan approached me at an ASLMS conference after I gave a… Continue reading Variable pulsewidth vascular system for dermatology | (1994) | Gustafsson | Publications | SPIE

Q-switched ruby laser treatment of benign pigmented lesions in Chinese skin. – PubMed – NCBI

via Q-switched ruby laser treatment of benign pigmented lesions in Chinese skin. – PubMed – NCBI   One of the first reports into the use of the Q-switched ruby laser in the treatment of Chinese pigmented lesions in patients in Taiwan.   Mike. mike@dermalase.co.uk

Calculation of the clinical parameters to effect removal of Port Wine Stains | (1990) | MJ Murphy | Publications | SPIE

via Calculation of the clinical parameters to effect removal of port wine stains | (1990) | Murphy | Publications | Spie   I started doing Monte Carlo and numerical thermal models in 1987 to try and figure out the ‘best’ set of laser parameters to treat PWS vessels. That was a long time ago! Since… Continue reading Calculation of the clinical parameters to effect removal of Port Wine Stains | (1990) | MJ Murphy | Publications | SPIE

Port Wine Stains: optical assessment and practical implementation of treatment | (1990) | MJ Murphy | Publications | SPIE

via Port wine stains: optical assessment and practical implementation of treatment | (1990) | Murphy | Publications | Spie   A report I co-authored with some colleagues in Strathclyde University describing our attempts to treat PWS with Candela’s original pulsed dye laser, back in the mid 1980s. We designed a PC-operated scanning system to deliver… Continue reading Port Wine Stains: optical assessment and practical implementation of treatment | (1990) | MJ Murphy | Publications | SPIE

Eggs, and their Arrhenius Parameters

  Eggs! Wonderful things. Scrambled, boiled, fried, curried…. Also, very useful to demonstrate the difference in the Arrhenius Parameters with different proteins. Eggs contain at least two sets of proteins – the yoke (also including some fat, vitamins, lecithin and minerals) and albumen (about 40 different proteins in the white). When we cook eggs we… Continue reading Eggs, and their Arrhenius Parameters

“Seeing the Light” – or, how to remove hair properly using light energy

  Permanent hair removal IS POSSIBLE – but only if you know how! Open PDF version for an article I wrote. Hair removal, by light, is routine these days’ across the world. A number of devices are used to achieve this – IPLs, diode lasers, alexandrite lasers and others. They all operate by generating heat within the… Continue reading “Seeing the Light” – or, how to remove hair properly using light energy

“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”