• 作者： 翁寶山; 許彬杰; 蔡飛龍; 黃景鐘
• 作者服務機構： 國立清華大學保建物理組; 飛龍治癌醫院; 行政院原子能委員會臺灣幅射偵測工作站
• 中文摘要： 本文係藉侖道假體之助以探討利用鈷六十的伽馬射線治療鼻咽癌時病人獲得的骨髓劑量。在空間和組織中散射輻射的能量是用熱發光劑量計和半值層的方法求出。其他有關因素如照野的大小、源至皮膚距離、主射柱的方向等均一併探討。在非轉移的情形，紅骨髓劑量是26 6雷得，但不包括鼻咽癌病灶的骨髓，約為腫瘤劑量的0.40%。在轉移的情形，紅骨髓劑量仍為腫瘤劑量的0.40%，如果將鼻咽癌病灶的紅骨髓也合併計算，則無論是轉移或非轉移的情形，骨髓劑量約為腫瘤劑量的14.5%。
• 英文摘要： This investigation is to study red marrow dose measurement for the Co -ray treatment of naso-pharyngeal carcinoma with the aid of Rando phantom. The energy of scattered radiation in space and intissue was investigated by means of half-value layers with thermoluminescent dosimeters. Other related fac-tors such as field size, SSD, and orientation of primary beams were also investigated. In the non-metastasescases, the red marrow dose is 26 6 rads which is about 0.40% tumor dose excluding the marrow at the NPCsite. For the metastases cases, the red marrow dose is still about 0.40% tumor dose. If the red marrow atthe NPC site is included, the red marrow dose is about 14.5% tumor dose for both non-metastases andmetastases cases.
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