Materials and Methods : In this study, we describe an automatic segmentation algorithm to extract contrast medium enhanced esophagus in X-ray fluoroscopy.

• 材料与方法：本研究是利用仿真摄影中，藉由吞食钡剂后之透视图象，利用图象前置处理、边缘检测、和边缘定位来自动搜寻食道图象边缘。