CAJ | 학술논문

目前公认的食管癌放疗后近期疗效的评价标准为食管X线钡餐造影三级分类法,但该方法仍存在一定的局限性.CT从形态学方面观察食管壁及转移灶的变化情况；正电子发射计算机断层扫描可观察病变组织的代谢活动；而磁共振的弥散加权成像可以通过组织内部水分子扩散运动的改变观察放疔后食管病变的坏死情况.综合多种手段对食管癌疗效评估已成为一种趋势.
목전공인적식관암방료후근기료효적평개표준위식관X선패찬조영삼급분류법,단해방법잉존재일정적국한성.CT종형태학방면관찰식관벽급전이조적변화정황；정전자발사계산궤단층소묘가관찰병변조직적대사활동；이자공진적미산가권성상가이통과조직내부수분자확산운동적개변관찰방정후식관병변적배사정황.종합다충수단대식관암료효평고이성위일충추세.
The gold standard evaluation criteria of radiotherapeutic effect at the present time is the three-level classification of X-ray barium meal.However,this method has certain limitations.Morphological changes in esophagus wall and metastases after radiotherapy can be observed on computed tomography scanning.A positron emission tomography scan is a sensitive imaging test to observe the metabolic activity in pathologic cells and tissues.And diffusion-weighted magnetic resonance imaging could provide the esophageal tumor necrosis information after radiotherapy by observing the changes of water molecular diffusion.With the development of medical imaging techniques,using various means in a comprehensive way to evaluate radiotherapeutic effect for esophageal carcinoma patients may become a trend.