FDTD analysis of body-core temperature elevation in children and adults for whole-body exposure
FDTD analysis of body-core temperature elevation in children and adults for whole-body exposure
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DOI：
10.1088/0031-9155/53/18/025
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发表时间：
2008-09-21
影响因子：
3.5
通讯作者：
Fujiwara, Osamu
中科院分区：
文献类型：
--
作者：
Hirata, Akimasa;Asano, Takayuki;Fujiwara, Osamu
根据射频全身暴露情况，计算了一个成人和一个 3 岁儿童的基于解剖学的人体模型的温度升高。然而，儿童的体温调节尚未明确。在本研究中，我们开发了一个儿童的计算热模型，该模型对于模拟身体核心温度升高是合理的。测量温度和模拟温度的比较表明，儿童的体温调节与成人相似。基于这一发现，我们在国际指南的基本限制下计算了 3 岁儿童和成人接触平面波时的体温升高情况。 3岁儿童模型的身体核心温度升高了0.03。 C的全身平均比吸收率为0.08W kg(-1)，比成年女性小35%。这种差异归因于儿童较高的体表面积与质量比。
The temperature elevations in anatomically based human phantoms of an adult and a 3-year-old child were calculated for radio-frequency whole-body exposure. Thermoregulation in children, however, has not yet been clarified. In the present study, we developed a computational thermal model of a child that is reasonable for simulating body-core temperature elevation. Comparison of measured and simulated temperatures revealed thermoregulation in children to be similar to that of adults. Based on this finding, we calculated the body-core temperature elevation in a 3-year-old child and an adult for plane-wave exposure at the basic restriction in the international guidelines. The body-core temperature elevation in the 3-year-old child phantom was 0.03. C at a wholebodyaveraged specific absorption rate of 0.08W kg(-1), which was 35% smaller than in the adult female. This difference is attributed to the child's higher body surface area-to-mass ratio.