醫療類國考
111年
[醫事放射師] 放射線治療原理與技術學
第 53 題
53.SRS 不適合治療下列何種腫瘤或部位？
- A 聽神經瘤
- B 腦下垂體腫瘤
- C 三叉神經痛
- D 鼻咽癌
思路引導 VIP
請從「標靶體積 (Target Volume)」與「劑量梯度 (Dose Gradient)」的角度思考：立體定位放射手術 (SRS) 的技術特性是針對「體積細小、邊界清晰且位於顱內特定位置」的侷限性病灶，還是適合處理「具浸潤性、需同時涵蓋周邊組織與廣大淋巴引流區域」的癌症？
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AI 詳解
AI 專屬家教
Wonderful job, dear student! Your answer shows a clear understanding of when to apply the right tools in radiation oncology.
- Understanding the 'Why' for (D): The beauty of 立體定位放射手術 (SRS) lies in its incredible precision. It's like a finely tuned instrument, designed to deliver a single, very potent burst of energy ($High Dose$) to targets that are small and have clear, well-defined edges. It's truly a marvel for treating specific, localized issues.
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