１历史回顾与现状 胃肠道钡餐造影技术始于１９１０年，自应用于临床以来［１］，一直是胃肠道疾病诊断的主要和首选方法之一。近二十年，随着胃肠道双对比造影技术的应用以及ＣＴ、ＭＲＩ等新影像设备的应用，使胃肠道肿瘤的影像诊断水平有了突破性的进展。 七十年代以前，由 1 Historical review and current status The gastrointestinal barium meal imaging technique began in 1910 and has been one of the main and preferred methods for the diagnosis of gastrointestinal diseases since its application to the clinic [1]. In the past two decades, with the application of dual contrast angiography in the gastrointestinal tract and the application of new imaging equipment such as CT and MRI, there has been a breakthrough in the diagnostic imaging of gastrointestinal cancers. Before the seventies, by