Prediction of anatomical exposure to solar UV: A case study for the head using SimUVEx v2

Religi, Arianna; Moccozet, Laurent; Vernez, David; Milon, Antoine; Backes, Claudine; Bulliard, Jean‐Luc; Vuilleumier, Laurent

doi:10.1109/healthcom.2016.7749513

Cited by 6 publications

(12 citation statements)

References 24 publications

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“…Considerable progresses have been made in the understanding of artificial sun protections such as hats [20,37,53], sunglasses [36] or shade structures [35,[53][54][55][56], but little is still known about the photo-protective function of human hair. The effects of UV radiation on hair have only lately attracted the attention of the medical community.…”

Section: Discussionmentioning

confidence: 99%

“…An overall description of the tool is represented in Figure 1. The principles, the performances and its validation have been described previously [19,20,[34][35][36][37]. Input.…”

Section: Methodsmentioning

confidence: 99%

“…Then, a bounding box optimization has been applied to determine if a vertex was in the shade, and a "visibility map" has been conceived to detect the surfaces of each hemisphere visible from the vertex, for the diffuse and reflected radiation [46]. The implementation of visibility maps allows a whole variety of 3D sun protection means such as hats, sunglasses or shade structures [20,[35][36][37], for whom the model can calculate their shade effects on the mannequin, similarly to the shadow of other body parts.…”

Section: Methodsmentioning

confidence: 99%

“…Though numerous studies examined the human body exposure to UV radiation [16,17], to our knowledge, little has been done about the application of human models and tools for predicting and visualizing UV exposure [18], often without taking into consideration sun protections. To address this issue, we developed SimUVEx (Simulating UV Exposure) [19,20], a modelling tool that combines three-dimensional (3D) techniques and ground-based UV irradiance to evaluate the relative contribution of the components of the UV radiation by different anatomical zones and in various exposure conditions. Typically, exposures of anatomical zones range from 13% to 76% of the exposure to the vertex of the head [21], and horizontal body parts exhibit higher exposure doses [22,23].…”

Section: Introductionmentioning

confidence: 99%

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3D Modelling for Solar Erythemal UV Protection Provided by Human Hair

Religi¹,

Moccozet²

2019

Applied Sciences

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The head is one of the most sun-exposed anatomical zones and its ultraviolet (UV) exposure is often underestimated. The goal of this research is to quantify the solar erythemal UV protection provided by human hair for different orientations and Solar Zenith Angles (SZA). For this purpose, a three-dimensional (3D) numeric simulation tool called SimUVEx was used to forecast the distribution of UV exposure based on geometric information and solar irradiance. The relative UV dose reduction was expressed in terms of predictive protection factor (PPF). Results showed that the effectiveness of the protection depends strongly on the orientation of the head and on the tilt of the hairs. As the SZA increases, the PPF also increases. PPFs provided by hair with a certain degree of order (parallel alignment) were generally higher by a range of about 10%–30% than the ones provided by random arrangements. A significant exposure to the scalp through the hair, even for an average hair density, was found. It confirms that hair is an important natural sunscreen in reducing transmission of UV radiation and must be considered in the prevention messages of skin cancer on the scalp, particularly in people with alopecia.

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Section: Discussionmentioning

confidence: 99%

“…An overall description of the tool is represented in Figure 1. The principles, the performances and its validation have been described previously [19,20,[34][35][36][37]. Input.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

3D Modelling for Solar Erythemal UV Protection Provided by Human Hair

Religi¹,

Moccozet²

2019

Applied Sciences

Self Cite

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show abstract

“…To address these issues, a previously developed 3‐dimensional (3D) numeric modelling tool predicting solar UVR doses at different anatomical sites, taking into account each UVR component (direct, diffuse and reflected UVR), has been enhanced . With the aim to quantify sun protection effectiveness, a specific morphology with precisely defined facial zones has been created for the head and various 3D hat styles have been added to the model . To assess UVR doses received by the face and support effective prevention messages, adapted to various environmental situations, this study aims (i) to predict midday (12:00‐14:00) seasonal sun protection effectiveness and UVR dose reduction in various hat styles for different facial zones and (ii) to estimate the daily (08:00‐17:00) dose reduction in direct, diffuse and reflected UVR received at various facial zones when wearing a commonly used hat style (a baseball cap).…”

Section: Introductionmentioning

confidence: 99%