noun
brachytherapy
Medical term for internal radiation therapy where a sealed source is placed inside or near the tumor.
前立腺がんの治療に小線源治療が用いられることがあります。
Brachytherapy is sometimes used to treat prostate cancer.
General term for radiation therapy, which includes external beam radiation, while 小線源治療 specifically refers to internal brachytherapy.
Compound of 小 (small), 線源 (radiation source), and 治療 (treatment), directly corresponding to the concept of brachytherapy.