• 作者： 周冬寶; 蔡昭明
• 作者服務機構： 核能研究所保健物理組
• 中文摘要： 本文討論從有限個投影重建二維影像的方法。用鋁、聚乙烯和松木做成已知結構的圓盤。以此圓盤為標的，用銫 137 伽馬射源與碘化鈉閃爍偵測器度量其投影。依影像重建的理論，再由投影重建圓盤的結構。重建的影像與已知的圓盤結構一致。本理論可廣泛應用於非破壞分析。
• 英文摘要： In this paper we discuss a methodof image reconstruction from finitenumbers of proiections. A disk whichwas made of aluminum, polyethyleneand pine wood was used as a target.Projections of the disk were taken bya gamma source and a NaI (TI)scintillation detector. The image ofthe disk reconstructed from the projec-tions was in good agreement with theknown structure. The results implythat the method can be applied innondestructive assay very accurately.
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