Anatomical Distribution of Ultraviolet Radiation Depends on Phototherapy Unit Design and on Personal Height and Body Mass

Journal of International Translational Medicine Pub Date : 2023-01-20 DOI:10.3390/ijtm3010006

H. Wulf, P. Philipsen, J. Heydenreich

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Abstract

Phototherapy using ultraviolet radiation (UVR) treatment units of various designs is common in dermatology. The anatomical distribution of UVR should be even, regardless of individual body shapes. Using electronic dosimeters, we measured the irradiance at 31 body sites on 12 persons of different heights and body mass (BMI). Five different treatment unit designs were tested: cabinet units with standing patients, units with patients lying down, and a unit where patients rotated in front of flatly arranged UVR tubes. In treatment units with short tubes, persons taller than 170 cm received low irradiance on the face, neck, and shoulders. In cabinet-type units, higher BMI lowered the irradiance on the chest and belly. The relative standard deviation (RSD) of irradiance was smallest for the rotating unit, and for the unit with patients lying down while irradiated from above only. A higher RSD was found in the unit designs where patients stood inside cabinets, and where patients lay down and were simultaneously irradiated from both sides. In general, longer tubes lower the overall RSD. The irradiance of the different body areas is about 60% of the measured calibration values, but to avoid provoking any erythema, the treatment dose can only be increased by 10%.

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紫外线辐射的解剖分布取决于光疗装置的设计和个人身高和体重

使用各种设计的紫外线(UVR)治疗单元的光疗在皮肤病学中很常见。无论个体的体型如何，UVR的解剖分布应该是均匀的。使用电子剂量计，我们测量了12名不同身高和体重(BMI)的人在31个身体部位的辐照度。研究人员测试了五种不同的治疗单元设计:患者站立的柜式单元，患者躺着的单元，以及患者在平面排列的UVR管前旋转的单元。在使用短管的治疗单元中，身高超过170厘米的人的面部、颈部和肩部的辐照度较低。在柜式装置中，较高的BMI降低了胸部和腹部的辐照度。旋转单元辐照度的相对标准偏差(RSD)最小，仅从上方照射时患者躺着的单元辐照度最小。在病人站在柜子里和病人躺着同时从两侧照射的单元设计中，RSD更高。一般来说，试管越长，RSD越低。不同身体区域的辐照度约为测量校准值的60%，但为了避免引起任何红斑，治疗剂量只能增加10%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of International Translational Medicine MEDICINE, RESEARCH & EXPERIMENTAL-

自引率

0.00%

发文量

317

审稿时长

8 weeks

期刊介绍： Journal of International Translational Medicine (JITM, ISSN 2227-6394), founded in 2012, is an English academic journal published by Journal of International Translational Medicine Co., Ltd and sponsored by International Fderation of Translational Medicine. JITM is an open access journal freely serving to submit, review, publish, read and download full text and quote. JITM is a quarterly publication with the first issue published in March, 2013, and all articles published in English are compiled and edited by professional graphic designers according to the international compiling and editing standard. All members of the JITM Editorial Board are the famous international specialists in the field of translational medicine who come from twenty different countries and areas such as USA, Britain, France, Germany and so on.