一种基于CT值进行组织不均匀性剂量校正的快速算法

A fast algorithm of inhomogeneity correction based on CT numbers for radiotherapy planning

组织空气比指数校正法(简称batho法)是放射治疗计划进行组织密度校正的一种重要方法。本文利用Batho法的推广公式改进型,提出一种基于图像CT值对组织密度不均匀性进行剂量校正的快速算法,具有算法简单,移植性好的特点,能够满足在临床放射治疗计划中做组织不均匀性校正的要求。

A fast algorithm peforming tissue density inhomogeneity corrections using a modified form of generalized equation of power law tissue-air ratio method(BATHO)is described. The corrections are performed using the quantitative anatomincal data produced by a CT scanner. The algorithm was shown simple and easy to be added to the conventional TPS and can fulfill the requirement of inhomogeneity correction in clinical radiotherapy.