Age‐related differences in tissue dielectric constant values of female forearm skin measured noninvasively at 300 MHz

Mayrovitz, Harvey N.; Singh, Anshuman; Akolkar, Shalaka

doi:10.1111/srt.12249

Cited by 19 publications

(12 citation statements)

References 67 publications

(96 reference statements)

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“…HA is known to play a key role in maintaining the water content of the skin. Previous reports have described an age‐related variation in hydration levels between the SC and dermis . We observed an age‐related difference in the hydration patterns between the epidermal and dermal layers of skin.…”

Section: Discussionsupporting

confidence: 52%

“…Previous reports have described an age-related variation in hydration levels between the SC and dermis. [19][20][21][22] We observed an age-related difference in the hydration patterns between the epider- Facial wrinkles are a characteristic and undesirable features associated with human aging. It is well known that the formation of wrinkles is attributed to the breakdown of dermal collagen and elastic fibers.…”

Section: Discussionmentioning

confidence: 83%

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Age‐related biophysical changes of the epidermal and dermal skin in Korean women

Cho

Cho²,

Kim³

et al. 2019

Skin Research and Technology

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Introduction The clinical characteristics of skin were investigated to study the inter‐relationship and changes in the biophysical properties of the epidermal and dermal layers associated with aging using noninvasive methods. Methods Our study included 100 healthy women aged between the early 20s and late 60s. Biophysical characteristics of skin such as color (brightness and spots), transparency, wrinkle on crow's feet, elasticity, hydration, sebum content, glossiness, and transepidermal water loss measured under controlled conditions. Results This study performed in a Korean population demonstrated that aging significantly affects human skin in terms of parameters such as wrinkles, skin color, elasticity, and epidermal hydration. Age‐related changes in skin hydration showed varying patterns between the epidermis and dermis. Skin color showed heterogeneous characteristics between the upper and lower epidermal layers associated with aging. Skin elasticity and wrinkles were observed to show and inversely proportional relationship in the early 40s. Conclusions We confirmed the significant influence of aging on the biophysical properties of skin and determined the distinct age‐related biophysical changes in the epidermal and dermal layers of skin using noninvasive method. This study indicates the need for further research to investigate the distinctive age‐related changes in characteristics of the epidermal and dermal layers of human skin.

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Section: Discussionsupporting

confidence: 52%

Section: Discussionmentioning

confidence: 83%

Age‐related biophysical changes of the epidermal and dermal skin in Korean women

Cho

Cho²,

Kim³

et al. 2019

Skin Research and Technology

View full text Add to dashboard Cite

show abstract

“…This device was chosen for its small sensor diameter allowing measurement of lesions with diameters as small as 10 mm with the inclusion of little or none of the surrounding skin in the measurement. The use of TDC values to assess skin properties has been widely reported in the literature, however the present application is unique. Briefly, the probe acts as an open‐ended coaxial transmission line through which a 300‐MHz signal is transmitted.…”

Section: Methodsmentioning

confidence: 99%

Characterizing the tissue dielectric constant of skin basal cell cancer lesions

Mayrovitz

Gildenberg

Spagna

et al. 2018

Skin Research and Technology

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“…The MoistureMeterD Compact automatically converts the TDC value into LTW%. Therefore, to be able to compare our findings with previous studies (Bakar et al, 2018), TDC values were calculated from LTW% (Nuutinen et al, 2004; Mayrovitz et al, 2016) using the following formula:

LTW% = 100% \times (TDC-1) / 77.5.

…”

Section: Methodsmentioning

confidence: 99%

Assessment of local tissue water in the arms and trunk of breast cancer survivors with and without upper extremity lymphoedema

Mazor

Smoot

Mastick

et al. 2018

Clin Physio Funct Imaging

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Given the paucity of information on local tissue water (LTW) in the upper extremity and trunk of women after breast cancer surgery, the purpose of this study was to compare tissue dielectric constant (TDC) values between the affected and unaffected sides of breast cancer survivors with and without upper extremity lymphoedema (LE). Differences in LTW were assessed using the TDC method for three sites in the upper limbs, three sites in the lateral thorax and two sites on the back. Additional measures included demographic and clinical characteristics, arm circumference and bioimpedance analysis. For the 112 survivors without LE, no differences in TDC values were found between the affected and unaffected sides for the first dorsal web space, ventral forearm and upper arm, and upper and lower back. Compared to the unaffected side, TDC values were significantly higher on the affected side for the upper, mid and lower lateral thorax. For the 78 survivors with LE, compared to the unaffected side, TDC was significantly higher on the affected side for all of the sites evaluated except the hand web space. Our findings support the use of the TDC method to detect differences in upper extremity and truncal oedema in survivors with LE following breast cancer treatment. Measurement of LTW may provide a useful method to determine truncal as well as extremity LE. The ability to detect early signs of truncal oedema may lead to pre-emptive interventions in breast cancer survivors.

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Age‐related differences in tissue dielectric constant values of female forearm skin measured noninvasively at 300 MHz

Abstract: Results are consistent with age-related shifts in water state from less-to-more mobile and explain depth-dependence differences between age groups. Data also give age-related TDC reference values for assessing local edematous or lymphedematous states.

Cited by 19 publications

References 67 publications

Age‐related biophysical changes of the epidermal and dermal skin in Korean women

Age‐related biophysical changes of the epidermal and dermal skin in Korean women

Characterizing the tissue dielectric constant of skin basal cell cancer lesions

Assessment of local tissue water in the arms and trunk of breast cancer survivors with and without upper extremity lymphoedema

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