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System for monitoring UV radiation level in phototherapy cabins in Poland.

Narbutt J, Pawlaczyk M, Sysa-Jędrzejowska A, Krzyścin JW, Sobolewski P, Rajewska-Więch B, Lesiak A - Arch Med Sci (2014)

Bottom Line: The CCS has been used in the examination of two different types of UVP cabins routinely working in Poland.It allows precise calculation of UV doses and spatial variability of UV radiance inside the cabin, thus providing uncertainties of the doses assigned by medical staff.The CCS could potentially serve as a primary standard for monitoring various UVP cabins working in Poland.

View Article: PubMed Central - PubMed

Affiliation: Department of Dermatology, Medical University of Lodz, Lodz, Poland.

ABSTRACT

Introduction: Ultraviolet phototherapy (UVP) is widely used in dermatological practice for the treatment of various skin diseases. Numerous studies support its beneficial curing effectiveness; however, overexposure to ultraviolet radiation can cause adverse health effects, such as sunburn reaction, erythema response, cataract, skin aging, etc. For these reasons, it is of special importance to monitor performance of UVP cabins using a calibration system to evaluate the UV doses incident upon the patient.

Material and methods: A mechanized cabin control system (CCS) is proposed. It consists of radiometers with a wide and narrow field of view to estimate the body irradiation and to identify malfunctioning cabin tubes. Quality control and quality assurance procedures are developed to keep high accuracy of the calibration procedure. The CCS has been used in the examination of two different types of UVP cabins routinely working in Poland.

Results: It allows precise calculation of UV doses and spatial variability of UV radiance inside the cabin, thus providing uncertainties of the doses assigned by medical staff. The CCS could potentially serve as a primary standard for monitoring various UVP cabins working in Poland.

Conclusions: The methodology developed to quantify UV doses in UVP cabins may be easily extended to any UV radiation source.

No MeSH data available.


Related in: MedlinePlus

The calibration session in the phototherapy cabin in Lodz with naked (A) and dressed manikin (B)
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Figure 0004: The calibration session in the phototherapy cabin in Lodz with naked (A) and dressed manikin (B)

Mentions: The procedure, referred to below as Mode A of the cabin examination, was used to estimate the UV variability inside the cabin. The measuring sensor was placed at the distance of 15 cm from the rotating axe (Figure 3), as the irradiated parts of the patient's body are usually outside the geometric centre of the cabin. The effects of the patient's presence in the cabin on the UV level were examined using a manikin. The manikin absorbs part of the radiation and reduces the multiple reflectance between the cabin walls. There are two options: one with an undressed and another with a dressed manikin (Figure 4). During the experiment, the CCS was fixed as in stage 1, and the manikin stood just behind the measuring unit. The fixed position of the CCS in front of the cabin wall is referred to as Mode B of the cabin examination.


System for monitoring UV radiation level in phototherapy cabins in Poland.

Narbutt J, Pawlaczyk M, Sysa-Jędrzejowska A, Krzyścin JW, Sobolewski P, Rajewska-Więch B, Lesiak A - Arch Med Sci (2014)

The calibration session in the phototherapy cabin in Lodz with naked (A) and dressed manikin (B)
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4296080&req=5

Figure 0004: The calibration session in the phototherapy cabin in Lodz with naked (A) and dressed manikin (B)
Mentions: The procedure, referred to below as Mode A of the cabin examination, was used to estimate the UV variability inside the cabin. The measuring sensor was placed at the distance of 15 cm from the rotating axe (Figure 3), as the irradiated parts of the patient's body are usually outside the geometric centre of the cabin. The effects of the patient's presence in the cabin on the UV level were examined using a manikin. The manikin absorbs part of the radiation and reduces the multiple reflectance between the cabin walls. There are two options: one with an undressed and another with a dressed manikin (Figure 4). During the experiment, the CCS was fixed as in stage 1, and the manikin stood just behind the measuring unit. The fixed position of the CCS in front of the cabin wall is referred to as Mode B of the cabin examination.

Bottom Line: The CCS has been used in the examination of two different types of UVP cabins routinely working in Poland.It allows precise calculation of UV doses and spatial variability of UV radiance inside the cabin, thus providing uncertainties of the doses assigned by medical staff.The CCS could potentially serve as a primary standard for monitoring various UVP cabins working in Poland.

View Article: PubMed Central - PubMed

Affiliation: Department of Dermatology, Medical University of Lodz, Lodz, Poland.

ABSTRACT

Introduction: Ultraviolet phototherapy (UVP) is widely used in dermatological practice for the treatment of various skin diseases. Numerous studies support its beneficial curing effectiveness; however, overexposure to ultraviolet radiation can cause adverse health effects, such as sunburn reaction, erythema response, cataract, skin aging, etc. For these reasons, it is of special importance to monitor performance of UVP cabins using a calibration system to evaluate the UV doses incident upon the patient.

Material and methods: A mechanized cabin control system (CCS) is proposed. It consists of radiometers with a wide and narrow field of view to estimate the body irradiation and to identify malfunctioning cabin tubes. Quality control and quality assurance procedures are developed to keep high accuracy of the calibration procedure. The CCS has been used in the examination of two different types of UVP cabins routinely working in Poland.

Results: It allows precise calculation of UV doses and spatial variability of UV radiance inside the cabin, thus providing uncertainties of the doses assigned by medical staff. The CCS could potentially serve as a primary standard for monitoring various UVP cabins working in Poland.

Conclusions: The methodology developed to quantify UV doses in UVP cabins may be easily extended to any UV radiation source.

No MeSH data available.


Related in: MedlinePlus