...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Acta oncologica. >Contouring and dose calculation in head and neck cancer radiotherapy after reduction of metal artifacts in CT images
【24h】

Contouring and dose calculation in head and neck cancer radiotherapy after reduction of metal artifacts in CT images

机译：在CT图像中减少金属伪影后头颈癌放射治疗的轮廓和剂量计算

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Background: Delineation accuracy of the gross tumor volume (GTV) in radiotherapy planning for head and neck (H&N) cancer is affected by computed tomography (CT) artifacts from metal implants which obscure identification of tumor as well as organs at risk (OAR). This study investigates the impact of metal artifact reduction (MAR) in H&N patients in terms of delineation consistency and dose calculation precision in radiation treatment planning. Material and methods: Tumor and OAR delineations were evaluated in planning CT scans of eleven oropharynx patients with streaking artifacts in the tumor region preceding curative radiotherapy (RT). The GTV-tumor (GTV-T), GTV-node and parotid glands were contoured by four independent observers on standard CT images and MAR images. Dose calculation was evaluated on thirty H&N patients with dental implants near the treated volume. For each patient, the dose derived from the clinical treatment plan using the standard image set was compared with the recalculated dose on the MAR image dataset.
机译：背景：头部和颈部（H＆N）癌症的放射疗法规划中的巨大肿瘤体积（GTV）的描绘精度受到来自金属植入物的计算机断层扫描（CT）植物的影响，所述金属植入物在肿瘤和风险（OAR）的靶向肿瘤和器官的影响。本研究调查了在辐射治疗规划中划清浓度和剂量计算精度方面的H＆N患者的金属伪影减少（MAR）的影响。材料和方法：肿瘤和OAR划针在规划11例肿瘤区域中的肿瘤区域（RT）中的肿瘤区的条纹伪像进行CT扫描。通过标准CT图像和MAR图像上的四个独立观察者，GTV-Tumor（GTV-T），GTV节点和腮腺。对治疗量附近的牙科植入物的三十个H＆N患者评估剂量计算。对于每位患者，将使用标准图像集的临床治疗计划衍生的剂量与MAR图像数据集上的重新计算的剂量进行比较。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号