什麼是Artifacts?

前面作者已經介紹了contrast sensitivity, blur, noise這幾種會導致醫學影像中物體看不見的幾種因素。
在此對於造影技術所產生影像上有非人體或物體本身的影像特徵，對於這類問題稱之為artifact。

參考來源：

"Another problem is that most imaging methods can create image features that do not represent a body structure or object. These are image artifacts."
- Image Characteristics and Quality (在「Google 網頁註解」中檢視)