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陰中有陽及陽中有陰:證核醫學影像診斷之理

Yin-Yang Tai-Chi Symbol as a Basic Principle for Nuclear Medicine Diagnosis

摘要


核子醫學造影經常使用「冷區」與「熱區」來描述病灶的放射活性;「熱區」是指聚集放射活性增加的區域,「冷區」是指著缺乏或聚集放射活性減少的區域。以氣-18-去氧葡萄糖正子造影檢查為例,放射活性增加的區域,即是葡萄糖高代謝區域或熱區;而放射活性減少或缺乏的區域,則是指葡萄糖低代謝區域或冷區。冷區或低代謝的區域相對應於「陰」,而熱區或高代謝的區域則相對應於「陽」,這是個陰陽相對應的概念或理論,也符合中國易經中的太極陰陽圖。本文結合實際臨床病例「冷區」與「熱區」的病灶來闡釋太極圖的「陰」與「陽」的相對概念及如何作為核子醫學影像之診斷基礎。

關鍵字

核子醫學影像 冷區 熱區

並列摘要


The terms ”hot” and ”cold” areas are extensively used in nuclear medicine diagnosis interpretation. ”Hot” indicates high accumulation of radioactivity, and ”cold” indicates a photon deficiency area of low accumulation of radioactivity. In the 18F-FDG PET system, the hypermetabolic or ”hot” area indicates increases in glucose metabolism; the hypometabolic or ”cold” or photopenia area indicates decrease or absence in glucose metabolism. The ”cold” photopenia or hypometabolic area corresponds to ”Yin” and the ”hot” or hypermetababolism corresponds to ”Yang”. The concept of relativity or the concept of principal just fits the theory of opposites, which later become ”Yin” and ”Yang” in the Tai-Chi symbol of I Ching. We illustrate various examples of ”cold” and ”hot” area in nuclear medicine topography.

延伸閱讀