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Non-contact monitoring of the depth temperature profile for medical laser scanning technologies [Elektronski vir]Košir, Jure, strojnik ; Vella, Daniele ; Jezeršek, MatijaMedical treatments such as high-intensity focused ultrasound, hyperthermic laser lipolysis or radiofrequency are employed as a minimally invasive alternatives for targeted tissue therapies. The ... increased temperature of the tissue triggers various thermal effects and leads to an unavoidable damage. As targeted tissues are generally located below the surface, various approaches are utilized to prevent skin layers from overheating and irreparable thermal damages. These procedures are often accompanied by cooling systems and protective layers accounting for a non-trivial detection of the subsurface temperature peak. Here, we show a temperature peak estimation method based on infrared thermography recording of the surface temperature evolution coupled with a thermaldiffusion- based model and a time-dependent data matching algorithm. The performance of the newly developed method was further showcased by employing hyperthermic laser lipolysis on an ex-vivo porcine fat tissue. Deviations of the estimated peak temperature remained below 1 °C, as validated by simultaneous measurement of depth temperature field within the tissue. Reconstruction of the depth profile shows a good reproducibility of the real temperature distribution with a small deviation of the peak temperature position. A thermal camera in combination with the time-dependent matching bears the scope for non-contact monitoring of the depth temperature profile as fast as 30 s. The latest demand for miniaturization of thermal cameras provides the possibility to embed the model in portable thermal scanners or medical laser technologies for improving safety and efficiency.Source: Scientific reports [Elektronski vir]. - ISSN 2045-2322 (Vol. 10, 2020, f.)Type of material - e-articlePublish date - 2020Language - englishCOBISS.SI-ID - 39682307
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Košir, Jure, strojnik | 39927 |
Vella, Daniele | 36938 |
Jezeršek, Matija | 21238 |
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