• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on Medical Imaging 2008: Imaging Processing; 20080217-19; San Diego,CA(US) >Robust registration between cardiac MRI images and atlas for segmentation propagation
【24h】

Robust registration between cardiac MRI images and atlas for segmentation propagation

机译：心脏MRI图像和地图集之间的稳健配准，可进行细分传播

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We propose a new framework to propagate the labels in a heart atlas to the cardiac MRI images for ventricle segmentations based on image registrations. The method employs the anatomical information from the atlas as priors to constrain the initialisation between the atlas and the MRI images using region based registrations. After the initialisation which minimises the possibility of local misalignments, a fluid registration is applied to fine-tune the labelling in the atlas to the detail in the MRI images. The heart shape from the atlas does not have to be representative of that of the segmented MRI images in terms of morphological variations of the heart in this framework. In the experiments, a cadaver heart atlas and a normal heart atlas were used to register to in-vivo data for ventricle segmentation propagations. The results have shown that the segmentations based on the proposed method are visually acceptable, accurate (surface distance against manual segmentations is 1.0± 1.0 mm in healthy volunteer data, and 1.6± 1.8 mm in patient data), and reproducible (0.7 ±1.0 mm) for in-vivo cardiac MRI images. The experiments also show that the new initialisation method can correct the local misalignments and help to avoid producing unrealistic deformations in the nonrigid registrations with 21% quantitative improvement of the segmentation accuracy.
机译：我们提出了一个新的框架，以将心脏图谱中的标签传播到心脏MRI图像，以基于图像配准进行心室分割。该方法利用来自地图集的解剖学信息作为先验，以使用基于区域的配准约束地图集和MRI图像之间的初始化。在最小化局部未对准的可能性的初始化之后，应用流体配准以将图集中的标记微调为MRI图像中的细节。就此框架中心脏的形态变化而言，来自图谱的心脏形状不必代表分割后的MRI图像的形状。在实验中，使用尸体心脏图谱和正常心脏图谱来注册体内数据以进行心室分割传播。结果表明，基于建议方法的分割在视觉上是可接受的，准确的（健康志愿者数据中相对于手动分割的表面距离为1.0±1.0 mm，患者数据中为1.6±1.8 mm），并且可重现（0.7±1.0 mm ）以获取体内心脏MRI图像。实验还表明，新的初始化方法可以纠正局部不对准，并有助于避免在非刚性配准中产生不切实际的变形，从而提高了21％的分割精度。

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