职业外照射剂量，采用TLD剂量计测得。
目的观察外照射剂量受限的上段食管癌体外照射辅助腔内放疗的近期疗效。
Objective To observe the short-term response of adjuvant intracavitary brachytherapy plus external beam radiotherapy in patients with dose-limited upper esophageal carcinoma.
采用外照射与腔内近距离放射治疗可以降低外照射剂量，减轻部分放射并发症。
The combination of external beam irradiation with brachytherapy may decrease the dose of external irradiation, so the late radiation complication may be reduced.
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