การวัดปริมาณรังสีดูดกลืนที่ต่อมธัยรอยด์ โดยใช้ ทีแอลดี

บทคัดย่อ

This research uses a thermoluminescent dosimeter (TLD ; LiF) to measure the dosage of gamma radiation at the thyroid of patients who had cancer in the head and neck area. The prescribed treatment plan was gamma radiation from Co-60 source : 50 Gy in five weeks. (10 Gy/week). The sample used in this research was 18 cancer patients. The thyroid was in the direct beam for treatments to the head and neck and received a large portion of the dosage. The cases studied in this research showed that the thyroid received 43 + 10 Gy. The lower limit (33 Gy) was greater than the ICRP standard value. This indicated that the current dose was too high. This research may be useful to doctors for future treatments.