使用简化分割和重建的数字人体模型进行肝部肿瘤射频切除剂量评估的比较研究  

Comparative Research on Dosimetric Evaluation of RF Ablation for Liver Tumor with Simplified Segmented and Reconstructed Digital Human Model

作　　者：巫彤宁[1] 陆冰松[1] 宓群征[1] 邵青[1] 张晨[1] 赵宸[1] 

机构地区：[1]工业和信息化部通信计量中心

出　　处：《中国数字医学》2010年第7期79-82,共4页China Digital Medicine

摘　　要：肝肿瘤射频切除的重点在于控制射频照射的剂量和位置。通过取得病人临床医学影像图片,进行分割和三维数字人体模型重建工作,并使用电磁场数值计算的方法进行治疗前的剂量评估是射频切除效果的关键。针对减少临床医学影像的分割和构建高精度数字人体模型的工作负担的目的,提出了使用简单分割的人体模型进行剂量评估的方法。并使用电磁场计算软件,对使用高精度、高分割度的数字人体模型和简化人体模型进行了肝部肿瘤射频照射的电磁场能量分布的比较。结果证明使用简化的人体模型的计算结果与使用高精度、高分割度的人体模型的计算结果相差不大。RF ablation for liver tumor relies on control of the RF exposure dose and the position. Based on the patient clinical medical images, segmentation and reconstruction for the 3-D digital human model, Electromagnetic field numerical computation methods can be applied as the pre-operation dosimetric evaluation which is the key factor for the effect of the RF ablation. This paper presents the method of using simplified segmented model for dosimetric evaluation in order to reduce the work of segmentation and reconstruction induced by the high-precision digital human model. Electromagnetic field computation software has been applied to compare the difference of RF power distribution between the digital human model with high-precision, high segmentation level and the simplified human model. Results show that there has little difference between the two cases.

关 键 词：肝肿瘤 射频切除 数字人体模型 数值计算 剂量评估 

分 类 号：R144.1[医药卫生—公共卫生与预防医学]