A model-based four-dimensional left ventricular surface detector.
A model-based four-dimensional left ventricular surface detector.
复制标题
基于模型的四维左心室表面探测器。
DOI：
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发表时间：
1991
影响因子：
10.6
通讯作者：
J. Corbett
中科院分区：
文献类型：
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作者：
T. Faber;E. Stokely;R. Peshock;J. Corbett
作者开发了一种通用的基于模型的表面检测器，用于寻找四维（三维空间加时间）心内膜和心外膜左心室边界。该模型将左心室（LV）形状、平滑度和连通性编码为松弛标记算法的相容性系数。这种表面检测方法被应用于门控单光子发射计算机断层扫描（SPECT）灌注图像，断层放射性核素心室造影，心脏旋转磁共振图像。使用实际患者数据研究其准确性。整体左心室容积相关性良好，磁共振成像（MRI）心内膜表面的最大相关系数为0.98，SPECT心外膜表面的最小相关系数为0.88。边缘检测的平均绝对误差分别为6.4、5.6。和4.6 mm分别用于断层放射性核素心室造影、门控灌注SPECT和磁共振成像。
The authors have developed a general model-based surface detector for finding the four-dimensional (three spatial dimensions plus time) endocardial and epicardial left ventricular boundaries. The model encoded left ventricular (LV) shape, smoothness, and connectivity into the compatibility coefficients of a relaxation labeling algorithm. This surface detection method was applied to gated single photon emission computed tomography (SPECT) perfusion images, tomographic radionuclide ventriculograms, and cardiac rotation magnetic resonance images. Its accuracy was investigated using actual patient data. Global left ventricular volumes correlated well, with a maximum correlation coefficient of 0.98 for magnetic resonance imaging (MRI) endocardial surfaces and a minimum of 0.88 for SPECT epicardial surfaces. The average absolute errors of edge detection were 6.4, 5.6. and 4.6 mm for tomographic radionuclide ventriculograms, gated perfusion SPECT, and magnetic resonance images, respectively.