کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
668852 1458777 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Three-dimensional bio-heat transfer simulation of sequential and simultaneous retinal laser irradiation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Three-dimensional bio-heat transfer simulation of sequential and simultaneous retinal laser irradiation
چکیده انگلیسی

Transient simulation of retinal laser irradiation is performed for a square array comprising 3 × 3 uniformly distributed spots under sequential and simultaneous mode. A finite volume formulation of the Pennes bio-heat transfer model is employed as the governing equation to generate the temperature distribution within the eye domain. Temperature distribution developed due to laser power of 0.2 W/spot and time duration of 100 ms/spot is used to compare the merits of sequential and simultaneous irradiation of spots. Simultaneous mode is preferred when the time of surgery is limited, with possible excess heating in the inter-spot retinal regions. The inter-spot spacing D is also varied between one diameter and one and half diameter of the spot size (diameter) to evaluate the safe placement of consecutive spots. D ≥ 0.75 mm can be considered as the optimum spot distance for non-interference due to excess heating. Effect of pulsation of incident laser power is observed to favorably reduce the average temperature of the irradiated regions of the retina toward photocoagulation temperature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Thermal Sciences - Volume 50, Issue 7, July 2011, Pages 1191–1198
نویسندگان
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