Development of a new method for the noninvasive measurement of deep body temperature without a heater

Kitamura, Kei-ichiro; Zhu, Xin; Chen, Wenxi; Nemoto, Tetsu

doi:10.1016/j.medengphy.2009.09.004

Cited by 85 publications

(44 citation statements)

References 14 publications

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“…Clinical techniques of this form were evaluated by several groups (Ball et al, 1973;Kobayashi et al, 1975;Singer and Lipton, 1975;Togwa et al, 1976 [Togawa]; Carter and Perry, 1977;Lees et al, 1980;Smith et al, 1980;Yamakage et al, 2002;Yamakage and Namiki, 2003;Kitamura et al, 2010;Teunissen et al, 2011b), usually under resting, thermoneutral conditions with minimal or no clothing over the measurement site. An extension of this approach, albeit it of questionable validity, used plastic-strip thermometers positioned over blood vessels and hotter skin surfaces (Lewit et al, 1982).…”

Section: Transcutaneous Temperaturementioning

confidence: 99%

Considerations for the measurement of core, skin and mean body temperatures

Taylor

Tipton

Kenny

2014

Journal of Thermal Biology

335

243

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Section: Transcutaneous Temperaturementioning

confidence: 99%

Considerations for the measurement of core, skin and mean body temperatures

Taylor

Tipton

Kenny

2014

Journal of Thermal Biology

335

243

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“…[2,3] Previous approaches/devices developed for measuring the core body temperature fall into two main groups: 1) invasive approaches [4–7] that involve sensors inserted into a natural body cavity, such as an ingestible or implanted telemetric device; 2) noninvasive approaches [8–13] that quantify core body temperature indirectly from measurements of skin temperature and heat flow, such as the zero-heat-flow [8–11] and the dual-heat-flux methods. [12,13] Invasive approaches offer excellent accuracy, but they have obvious disadvantages in discomfort and risk of complications. Noninvasive approaches are, as a result, of widespread interest.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Studies of Epidermal Heat Flux Sensors for Measurements of Core Body Temperature

Zhang

Webb

Luo

et al. 2015

Adv Healthcare Materials

108

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Long-term, continuous measurement of core body temperature is of high interest, due to the widespread use of this parameter as a key biomedical signal for clinical judgment and patient management. Traditional approaches rely on devices or instruments in rigid and planar forms, not readily amenable to intimate or conformable integration with soft, curvilinear, time-dynamic, surfaces of the skin. Here, materials and mechanics designs for differential temperature sensors are presented which can attach softly and reversibly onto the skin surface, and also sustain high levels of deformation (e.g., bending, twisting, and stretching). A theoretical approach, together with a modeling algorithm, yields core body temperature from multiple differential measurements from temperature sensors separated by different effective distances from the skin. The sensitivity, accuracy, and response time are analyzed by finite element analyses (FEA) to provide guidelines for relationships between sensor design and performance. Four sets of experiments on multiple devices with different dimensions and under different convection conditions illustrate the key features of the technology and the analysis approach. Finally, results indicate that thermally insulating materials with cellular structures offer advantages in reducing the response time and increasing the accuracy, while improving the mechanics and breathability.

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“…During the initial 60 min, deep body temperature was maintained at 37°C. The deep body temperature was then decreased from 37°C to 35°C at a rate of -0.2°C/min (Kitamura et al, 2010). When the deep body temperature reached 35°C, it was maintained for the remaining 60 min.…”

Section: Traceability Of Temperature Changesmentioning

confidence: 99%

“…Many researchers have sought to develop noninvasive body temperature monitoring devices that use the zero heat flow method (ZHFM), double sensor method (DSM), and dual heat flux method (DHFM) (Fox and Solman, 1971;Gunga et al, 2012;Kitamura et al, 2010) (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%