【摘要】 目的探讨食管癌腔内后装治疗施源管的最适管径。方法对100例正常食管患者做胸部CT,采用微段分解测量法,测量食管空腔周长,并进行分析。结果在体胸段食管管壁的周长为2.63cm。结论食管癌腔内后装治疗施源管的直径为8mm时是食管充分扩张的最低限度,根据近距离放疗的剂量学特点,它能保证食管癌腔内后装治疗时将施源管因素导致的放疗反应和局部肿瘤复发减至最低。更多还原

【Abstract】 Objective To determine the most optimal diameter of the supply radiator duct for brachytherapy in patients with esophagus carcinomaMethods 100 subjects without esophagus disease were performed thoracic CT.The perimeter of esophageal cavity was measured by the method of disassembled mini-segment.Results The perimeter of the esophagus at chest segment was 2.63 cm.Conclusion 8 mm diameter of the supply radiator duct for brachytherapy in patients with esophagus carcinoma is the basic limit when esophagus is fully dilated.According to the dose curve about brachytherapy,it can ensure an optimal therapeutic efficacy and the lowest local recurrence on the condition of the least radioactive exposure or side effects.更多还原