光激發光劑量計應用於肝臟血管特殊攝影之假體劑量評估

依據台灣衛生福利部統計，台灣約有250萬B肝帶原者，相當於每5－6位成年人當中就有一人，而國人慢性肝病、肝硬化及肝癌的肇因主要為B型肝炎及C型肝炎，每年有約13,000人死於慢性肝病、肝硬化及肝癌。肝臟血管特殊攝影檢查在醫院是很常見的一項檢查，同時這項檢查也兼具診斷與治療，另外在多發性肝腫瘤與不願意接受外科手術治療的病患也適合以肝臟血管攝影合併化療藥物粒子做治療處置。本研究使用安妮假體代替檢查病患，在假體上重要器官如腦、水晶體、甲狀腺、食道、唾液腺、骨表面、紅骨髓、乳腺、肝臟、胃、膀胱及性腺佈點光激發光劑量計（Optically Stimulated Luminescence Dosimeter）作量測，儀器輻射曝露條件設定為120kV、200mA，連續曝露20分鐘、30分鐘、40分鐘、50分鐘與60分鐘，依次各執行5次曝露，以光激發光劑量計（OSLD）來偵測身體週邊重要器官之輻射劑量與安全評估，研究結果顯示，曝露20分鐘得到全身有效劑量23.57mSv，曝露30分鐘得到全身有效劑量27.96mSv、曝露40分鐘得到全身有效劑量31.4mSv、曝露50分鐘得到全身有效劑量35.17mSv、曝露60分鐘得到全身有效劑量39.84mSv，本文則期望能給予各大醫院在肝臟血管特殊攝影能夠在輻射劑量水平有更好的控制，以落實合理抑低（ALARA）概念。

關鍵字

光發光劑量計；肝臟血管特殊攝影；有效劑量； ALARA

並列摘要

Liver disease in Taiwan has long been regarded as a national disease. According to statistics from the Ministry of Health and Welfare in Taiwan, there are about 2.5 million people with hepatitis B in Taiwan, which is equivalent to one in 5-6 adults, and about 70% of people with hepatitis Of the people are hepatitis B carriers, and 20% are chronic hepatitis C infections, and the main causes of chronic liver disease, cirrhosis and liver cancer in the Chinese people are hepatitis B and hepatitis C, and about 13,000 people die of chronic liver disease every year, cirrhosis and liver cancer. Liver vascular special photography examination is a very common examination in hospitals. At the same time, this examination also has both diagnosis and treatment. Patients who will do this examination have nothing more than some liver disease indications, such as liver tumor embolism screen, liver Vascular hemorrhage embolization , liver tumor embolism combined with chemical drug treatment, etc. In addition, patients with multiple liver tumors and patients who do not want to undergo surgical treatment are also suitable for treatment with liver angiography combined with chemotherapy drug particles. In this study, we used Rando phantom. The important organs such as brain, crystal, thyroid, esophagus, salivary glands, bone surface, red bone marrow, breast, liver, stomach, bladder and gonadal use OSLD. According to the measurement, the radiation exposure conditions are set to 120kV, 200mA continuous exposure for 20 minutes, 30 minutes, 40 minutes, 50 minutes and 60 minutes according to the exposure conditions of the actual liver vascular special photography, and each exposure is performed 5 times in sequence, the OSLD uses light excitation light, fast reading, wide radiation dose detection range, repeatable reading, high sensitivity, etc. Advantages, it has its advantages in dose verification.

並列關鍵字

OSLD ； Liver Vascular Photography ； Equivalent Dose ； Effective Dose

參考文獻

Yukihara, E.G.,Sawakuchi, G.O.,Guduru, S.,McKeever, S.W.S.,Gaza, R.,Benton, E.R.,Yasuda, N.,Uchihori, Y.,Kitamura, H.(2006).Application of the optically stimulated luminescence (OSL) technique in space dosimetry.Radiation Measurement.41,1126-1135.

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