Review on Multiple Functional Image Technologies in Chemoradiotherapy Response Prediction and Prognosis Evaluation for Esophageal Carcinoma

The Response Evaluation Criteria in Solid Tumours(RECIST version 1.1) is not absolutely adapted for the evaluation of esophageal carcinoma which originates from a cavitary organ, further more, the conventional iconography technology could not effectively reflect the real shrink condition of tumor because of the edema during and at the end of radiotherapy; while, the functional image technologies, such as PET-CT,DWI, etc. could redeem the inadequacy because of their advantage of reflecting the change of function and metabolism. The article reviews the functional image technologies often used to evaluate the non-operation treatment response of esophageal carcinoma in recent years.