食管癌是严重威胁人民生命健康的常见肿瘤之一。由于其邻近有重要器官,如脊髓、肺、心脏、大血管,因而在放射治疗中怎样避开这些重要器官,减少正常组织受量,采用最佳方案治疗,成为至关重要的问题,适形放疗能实现上述要求。我院自1999年5月开始采用真空垫及体部网膜固定技术来实 Esophageal cancer is one of the most common tumors that threaten the life and health of people. Due to its proximity to important organs such as spinal cord, lung, heart and blood vessels, how to avoid these vital organs in radiation therapy and reduce the amount of normal tissue, and the optimal treatment, has become a crucial issue. Conformal Radiotherapy can achieve the above requirements. Our hospital since May 1999 began to use vacuum mats and solid omentum fixation techniques to real