略語大辞典 [Med] 29 rem roentgen equivalent in man レム. 人体レントゲン当量. 放射線照射量の単位. 1 radのX線と同じ生物効果を示す放射線の照射量.roentgen equivalent in man; a unit of radiation; 1 rem = 1 rad x RBE(relative biological effectiveness); in radiology; [Med:Phys]. 丸善「略語大辞典」JLogosID : 11857632