Radiation focused from a source outside the body is called external beam radiation.
射线聚焦来自体外称作外射线术的放射源。
Out of the group that chose radiation, approximately 30% had external beam radiation and 20% had implanted seeds.
而在其它选择放射治疗患者人群中，大约有30%使用外源性辐射治疗，20%使用植入式放射源治疗。
The combination of external beam irradiation with brachytherapy may decrease the dose of external irradiation, so the late radiation complication may be reduced.
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.
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。
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