公开(公告)号：WO1997017894A1

公开(公告)日：1997-05-22

申请号：PCT/US1996017772

申请日：1996-11-13

Applicant: FOCUS GRAPHICS, INC.

Inventor： FOCUS GRAPHICS, INC. ,  GORIS, Michael, L.

IPC: A61B05/05

CPC classification number: G06T3/0081

Abstract: Registration of organ images, such as myocardial images obtained by myocardial perfusion scintigraphy (820, 840, 860), is performed by an elastic transformation which includes a rigid transformation, a global affine transformation, and local transformations. The elastic transformation eliminates normal morphological variances such as variances in orientation, size and shape, so that the remaining differences represent important functional differences (810, 830, 850). The method can be used to register a patient's organ against a template obtained by averaging organ images from many patients (800). For scintigraphic images the boundary of the organ is determined by a "segmentation" procedure involving the analysis of spatial derivatives of the count density. After the elastic transformations of the surface of the organ, the scintigraphic count densities are redistributed. The method decreases the effects of operator variability and increases the reliability of diagnoses of organ irregularities.

Abstract translation: 通过包括刚性变换，全局仿射变换和局部变换的弹性变换来执行器官图像的登记，例如通过心肌灌注闪烁扫描（820,840,860）获得的心肌图像。 弹性变换消除了正常的形态学变化，如取向，大小和形状的差异，因此剩余的差异代表重要的功能差异（810,830,850）。 该方法可用于对患者器官进行登记，以通过平均来自许多患者的器官图像获得的模板（800）。 对于闪烁图像，器官的边界由涉及对计数密度的空间导数的分析的“分割”程序确定。 在器官表面的弹性变换后，重新分布闪烁计数密度。 该方法降低了运营商变异性的影响，增加了器官不规则诊断的可靠性。