影像引导下的放射治疗是近年来出现的一种治疗恶性肿瘤的新技术,而锥形束CT既是一种全新的CT成像技术,又是影像引导下放射治疗系统的关键设备.本文介绍锥形束CT的基本原理及其在放射治疗中的应用现状和研究进展情况,并对锥形束CT图像后处理技术进行综述.%Image-guided radiation therapy has become a brand-new technology for treating cancer in recent years. Conebeam CT is not only a new kind of CT imaging technology, but also the key equipment in the image-guided radiation therapy system. This article introduced the basic principle of cone-beam CT and its application and research progress in radiation therapy, as well as the cone-beam CT image processing techniques.
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