用于标记心脏磁共振图像运动跟踪的改进谐波相位（HARP）方法。
Improved Harmonic Phase (HARP) Method for Motion Tracking a Tagged Cardiac MR images.
作者信息
Khalifa Ayman, Youssef A B M, Osman Nael
机构信息
Biomedical Eng. Dept., Cairo University, Cairo, Egypt; Radiology Dept., Johns Hopkins University, Baltimore, Maryland, USA. Email:
出版信息
Conf Proc IEEE Eng Med Biol Soc. 2005;2005:4298-301. doi: 10.1109/IEMBS.2005.1615415.
The diagnosis of cardiovascular disease requires precise assessment of both morphology and function of the heart. Currently, magnetic resonance imaging (MRI) provides a useful tool for accurate and reproducible assessment of regional function of the left ventricle noninvasively. MR tagging produces images of the heart that can be analyzed using harmonic phase (HARP) method to describe the regional function of the heart. In order to calculate regional function, a circular mesh is manually built at a specific timeframe, after which the points of such mesh are tracked using the HARP technique. The tracking is not perfect and some individual points on the mesh could fail in tracking. In this work, a new method is presented to improve the tracking by combining HARP with active contour methods. This modified HARP technique is more robust than the previous HARP technique.
心血管疾病的诊断需要对心脏的形态和功能进行精确评估。目前，磁共振成像（MRI）为无创、准确且可重复地评估左心室局部功能提供了一种有用的工具。磁共振标记生成心脏图像，可使用谐波相位（HARP）方法进行分析以描述心脏的局部功能。为了计算局部功能，在特定时间帧手动构建一个圆形网格，然后使用HARP技术跟踪该网格的点。跟踪并不完美，网格上的一些个别点可能跟踪失败。在这项工作中，提出了一种将HARP与主动轮廓方法相结合以改进跟踪的新方法。这种改进的HARP技术比以前的HARP技术更稳健。
Zotero 插件