کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
668150 1458736 2014 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analysis of skin cooling for quantitative dynamic infrared imaging of near-surface lesions
ترجمه فارسی عنوان
تجزیه و تحلیل خنک کننده پوست برای تصویربرداری مادون قرمز کمی از ضایعات سطح زمین
کلمات کلیدی
تصویربرداری مادون قرمز پویا، ضایعات پوستی، ملانوما، تشخیص پزشکی، خنک کننده پوست، مدل سازی محاسباتی، بهینه سازی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Dynamic infrared (IR) imaging is a clinical diagnostic method that relies on external cooling to enhance the thermal contrasts between a lesion and healthy skin during the thermal recovery process after the removal of the cooling. The subject of this paper is the proper selection of the cooling method, cooling temperature, time and depth to maximize thermal contrasts while minimizing discomfort to the patient. The systematic computational analysis of the influence of these parameters on the measured signal is reported. Three cooling methods are considered: constant temperature, water-soaked cotton, and convective cooling. The analysis suggests that 20 °C is a suitable cooling temperature that allows the cooling effect to reach the lesion depth within 2 min. The induced thermal contrast is in the range of 0.1−0.3 °C during the thermal recovery. The thermal contrasts enhanced by cooling can be accurately measured by a properly designed IR imaging system. Cooling durations from 5 to 120 s were considered. Two types of thermal responses were identified. Shorter cooling leads to a maximum of thermal contrast within the first few seconds of thermal recovery. Longer cooling durations result in a maximum that is lower, broader and it appears later in time (20-40 s after the removal of cooling). The computational model was validated using data from in vivo dynamic IR imaging measurements. The analysis in this study provides a quantitative basis for the selection and optimization of cooling conditions in clinical practice.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Thermal Sciences - Volume 86, December 2014, Pages 175-188
نویسندگان
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