[治]

外部放射線

external radiation  [治防]

幾何学的半影

geometrical penumbra  [治]

幾何学的不鮮鋭度

geometrical unsharpness  [治]

奇形

anomaly  [治防]

危険

risk  [治防]

危険臓器

Organs at Risk  [治] (定)

基質

substrate  [治]

基準空気カーマ率

reference air-kerma rate   [治測]

基準軸

reference axis   [治]

基準条件

reference condition  [治測]