Abstract

Controlling deep temperature in parts of the human body is necessary for hyperthermia and thermal ablation used in oncology. UHF heating of single hands of patients was chosen as the model for this procedure. For the control, a plastisol cylinder was heated in the same manner: a substance with acoustic and thermophysical properties close to those of soft tissues of the human body. Passive acoustic thermometry was used to measure the deep temperature of the hand, and infrared thermometry was used to measure the surface temperature. After 5 min of UHF heating, the deep temperature of the hand increased by an average of 0.7 ± 0.6°C, and the surface temperature, by 0.8 ± 0.6°C. The same methods, as well as independent measurements, were used to determine the plastisol temperature. After the same procedure, the deep temperature of the plastisol increased by 4.3 ± 0.4°C; the surface temperature, by 3.2 ± 0.2°C; the temperature measured with a thermometer at the center of the object, by 3.3 ± 0.5°C. The smaller heating of the hand compared to the model object is related to effect of blood flow, which should be adequately taken into account in further studies. The noninvasive methods indicated in the study can be used to control temperature in oncology during hyperthermia and thermal ablation under the effect of a high-frequency electromagnetic field.

中文翻译：

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结合使用被动声波和红外测温法监测超高频加热

摘要

控制人体局部深部温度对于肿瘤学中使用的高温和热消融是必不可少的。选择患者单手的UHF加热作为该过程的模型。为了进行对照，以相同的方式加热增塑溶胶筒：一种具有声音和热物理性质与人体软组织接近的物质。被动声学测温法用于测量手的深部温度，红外测温法用于测量表面温度。在UHF加热5分钟后，手的深部温度平均升高0.7±0.6°C，表面温度升高0.8±0.6°C。使用相同的方法以及独立的测量方法来确定增塑溶胶的温度。经过相同的步骤，增塑溶胶的深层温度升高了4.3±0.4°C; 表面温度3.2±0.2°C; 用温度计在物体中心测得的温度为3.3±0.5°C。与模型对象相比，手的发热量较小与血液流动的影响有关，在进一步研究中应充分考虑到这一点。该研究中指出的非侵入性方法可用于控制高频热场和热消融过程中在高频电磁场作用下的肿瘤温度。在进一步研究中应充分考虑到这一点。该研究中指出的非侵入性方法可用于控制高频热场和热消融过程中在高频电磁场作用下的肿瘤温度。在进一步研究中应充分考虑到这一点。该研究中指出的非侵入性方法可用于控制高频热场和热消融过程中在高频电磁场作用下的肿瘤温度。