scholarly journals Influence of spraying distance and postcooling on cryogen spray cooling for dermatologic laser surgery

2001 ◽  
Author(s):  
Guillermo Aguilar ◽  
Boris Majaron ◽  
John A. Viator ◽  
Brooke Basinger ◽  
Emil Karapetian ◽  
...  
Keyword(s):  
Laser Surgery ◽  
Spray Cooling ◽  
Cryogen Spray Cooling

Effect of Nozzle Size on the Surface Heat Transfer Dynamics during Cryogen Spray Cooling in Dermatologic Laser Surgery

2012 ◽  
Vol 39 (3) ◽  
pp. 0303005
Author(s):  
周致富 Zhou Zhifu ◽  
王锐 Wang Rui ◽  
王国祥 Wang Guoxiang ◽  
郭烈锦 Guo Liejin ◽  
陈斌 Chen Bin ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Laser Surgery ◽  
Spray Cooling ◽  
Surface Heat ◽  
Surface Heat Transfer ◽  
Nozzle Size ◽  
Cryogen Spray Cooling

Numerical Analysis of Cold Injury of Skin in Cryogen Spray Cooling for Dermatologic Laser Surgery

2007 ◽  
Author(s):  
Dong Li ◽  
Ya-Ling He ◽  
Guo-Xiang Wang ◽  
Jie Xiao ◽  
Ying-Wen Liu
Keyword(s):  
Numerical Analysis ◽  
Laser Surgery ◽  
Spray Cooling ◽  
Cold Injury ◽  
Dermatologic Surgery ◽  
Spray Process ◽  
Skin Cells ◽  
Model Predictions ◽  
Cryogen Spray Cooling ◽  
Clinical Conditions

In laser dermatologic surgery, cryogen spray cooling (CSC) is used to avoid laith damage such as scars from skin burning due to the melanin absorption of the laser beam. As the cryogen is fully atomized from the nozzle, evaporation of the droplets may quickly drop the cryogen temperature below −60 °C, depending on the spray distance from the nozzle. Such a low temperature is potential to cold injury for skin. Therefore, spray process should be accurately controlled during clinical practice to achieve sufficient protection and to avoid cold injury. This study presents a numerical analysis of cold injury of skin in cryogen spray cooling for dermatologic laser surgery. The model for cryogen spray cooling of skin, developed early, is extended to include the freezing of skin cells. The model predictions include the movement of the lethal isothermals. The severity of cold injury is then quantified under various clinical conditions. The effect of initial temperature and the spurt duration on possible cold injury of skin are also investigated.

Influence of nozzle-to-skin distance in cryogen spray cooling for dermatologic laser surgery

2001 ◽  
Vol 28 (2) ◽  
pp. 113-120 ◽  
Author(s):  
Guillermo Aguilar ◽  
Boris Majaron ◽  
Karl Pope ◽  
Lars O. Svaasand ◽  
Enrique J. Lavernia ◽  
...  
Keyword(s):  
Laser Surgery ◽  
Spray Cooling ◽  
Cryogen Spray Cooling

scholarly journals Radial and temporal variations in surface heat transfer during cryogen spray cooling

2005 ◽  
Vol 50 (2) ◽  
pp. 387-397 ◽  
Author(s):  
Walfre Franco ◽  
Jie Liu ◽  
Guo-Xiang Wang ◽  
J Stuart Nelson ◽  
Guillermo Aguilar
Keyword(s):  
Heat Transfer ◽  
Spray Cooling ◽  
Temporal Variations ◽  
Surface Heat ◽  
Surface Heat Transfer ◽  
Cryogen Spray Cooling

scholarly journals Dynamics of cryogen deposition relative to heat extraction rate during cryogen spray cooling

2000 ◽  
Author(s):  
Wim Verkruysse ◽  
Boris Majaron ◽  
Guillermo Aguilar ◽  
Lars O. Svaasand ◽  
J. Stuart Nelson
Keyword(s):  
Spray Cooling ◽  
Extraction Rate ◽  
Heat Extraction ◽  
Cryogen Spray Cooling ◽  
Heat Extraction Rate

Treatment of Hypertrophic Scars Using a Long-Pulsed Dye Laser With Cryogen-Spray Cooling

2005 ◽  
Vol 54 (5) ◽  
pp. 487-493 ◽  
Author(s):  
Taro Kono ◽  
Ali Rza Er??????en ◽  
Hiroaki Nakazawa ◽  
Motohiro Nozaki
Keyword(s):  
Spray Cooling ◽  
Dye Laser ◽  
Pulsed Dye Laser ◽  
Hypertrophic Scars ◽  
Cryogen Spray Cooling
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