病人需接受體內放射治療（近接治療）。哪項安全措施是優先的？
A client requires internal radiation therapy (brachytherapy). What is the priority safety measure?
- APlace the client in a private room with a lead-lined door將病人安置於有鉛襯門的單獨病房
- BLimit the time spent with the client✓ 正解限制與病人相處的時間
- CWear a lead apron at all times while in the room在房間內始終穿著鉛衣
- DEncourage the client to drink lots of water鼓勵病人多喝水
體內放射治療（Brachytherapy）的輻射防護三大原則為「時間（Time）」、「距離（Distance）」與「屏蔽（Shielding）」。其中，限制與病人接觸的時間是護理師最能自主控制且最有效的輻射暴露減量策略。護理師應將照護工作集中化，以減少進入房間的頻率與停留時間。過度依賴鉛衣（屏蔽）雖有輔助作用，但無法取代時間管理的重要性。
The three principles of radiation protection during brachytherapy are time, distance, and shielding. Among these, limiting the time spent with the patient is the strategy that the nurse can most directly control and is the most effective means of reducing radiation exposure. Care activities should be clustered to reduce the frequency of room entry and the duration of stay. Although lead aprons (shielding) provide additional protection, they do not replace the importance of time management.
美國醫院針對 Brachytherapy 的病人通常會張貼明顯的 Radiation Hazard 標誌，護理師需在門口備有紀錄表，嚴格控管訪客及醫護人員的進入時間。