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目的 对NRL 0 0 1型深部热疗机物理特性进行研究。方法 采用NRL 0 0 1型深部热疗机对 15 1例患者进行 2对极板相互垂直交叉加热。热电偶测温点分别放置于直肠、耳膜、食管、瘤内或腹腔进行测温。结果 对测温系统准确性的研究结果显示 ,用水银温度计在停止治疗后测量与机测温度对比误差为 0 .1～ 0 .7℃。肺肿瘤内测温结果显示瘤内温度比全身温度高约 2℃。腹腔热盐水灌注后加温 ,腹腔内温度比直肠约高 0 .5℃。腹腔热盐水灌注后热疗 ,观察其温度的均匀性 ,发现随加温时间的延长腹腔温度渐趋向均匀 ,在约 5 0min后基本均匀 ;另外腹部按摩会缩短时间。结论 该机测温系统与标准水银温度计误差较小可以接受。在食管癌及腹腔热灌注加温时测耳温、食管、直肠温度可基本表达实际温度。肺部肿瘤局部热疗时食管腔内温度比肺肿瘤温度可能低 2 .0℃。局部加温时 ,治疗区可能比全身温度高 2 .0℃左右。腹腔热盐水灌注后加温方法可行 ,各处温度随时间延长趋于均匀。加温时间应该适当延长 ,推荐在 12 0min以上。在有条件时尽可能行瘤内测温 ,1次测温不代表该患者今后的情况。
Objective To study the physical characteristics of NRL 0 0 1 deep hyperthermia machine. Methods A total of 15 1 patients were treated with NRL 0 0 1 type deep hyperthermia machine and the two plates were perpendicularly cross-heated. Thermocouple temperature measurement points were placed in the rectum, eardrum, esophagus, tumor or abdominal cavity temperature measurement. Results The accuracy of the temperature measurement system, the results show that the mercury thermometer measured after stopping treatment and the measured temperature error was 0. 1 ~ 0 .7 ℃. Lung tumor temperature results showed that the tumor temperature than the body temperature of about 2 ℃. Peritoneal warm saline perfusion heating, intraperitoneal temperature is about 0.5 ℃ higher than the rectum. Intraperitoneal hyperthermia after perfusion of hyperthermia, observe the temperature uniformity and found that with the extension of the warming time the abdominal cavity temperature gradually become uniform, after about 5 0min basically uniform; other abdominal massage will shorten the time. Conclusion The error between the temperature measurement system and the standard mercury thermometer is acceptable. Esophageal cancer and intraperitoneal hyperthermia measured when the ear temperature, esophageal, rectal temperature can be the basic expression of the actual temperature. Local hyperthermia in lung tumors when the intraluminal temperature than lung cancer may be low temperature 2 .0 ℃. Local warming, the treatment area may be higher than the body temperature 2. 0 ℃ or so. Intraperitoneal hot saline perfusion heating method is feasible everywhere around the temperature tends to be uniform. Warming time should be extended, recommended at 12 0min above. As far as possible under the conditions of intra-tumor temperature measurement, a temperature measurement does not represent the patient’s future situation.