Method and system for hybrid rigid registration of 2D/3D medical images
    1.
    发明申请
    Method and system for hybrid rigid registration of 2D/3D medical images 有权
    2D / 3D医学图像混合刚性配准的方法和系统

    公开(公告)号:US20050094898A1

    公开(公告)日:2005-05-05

    申请号:US10946204

    申请日:2004-09-21

    IPC分类号: G06K9/00 G06K9/64 G06T7/40

    CPC分类号: G06K9/00208 G06T7/33 G06T7/35

    摘要: A method of aligning a pair of images with (101) a first image and a second image, wherein said images comprise a plurality of intensities corresponding to a domain of points in a D-dimensional space includes identifying (102) feature points on both images using the same criteria, computing (103) a feature vector for each feature point, measuring a feature dissimilarity (104) for each pair of feature vectors, wherein a first feature vector of each pair is associated with a first feature point on the first image, and a second feature vector of each pair is associated with a second feature point on the second image. A correspondence mapping (105) for each pair of feature points is determined using the feature dissimilarity associated with each feature point pair, and an image transformation (106) is defined to align (108) the second image with the first image using one or more pairs of feature points that are least dissimilar.

    摘要翻译: 一种将一对图像与(101)第一图像和第二图像对准的方法,其中所述图像包括对应于D维空间中的点的区域的多个强度,包括在两个图像上识别(102)特征点 使用相同的标准,计算(103)每个特征点的特征向量,测量每对特征向量的特征不相似性(104),其中每对特征向量的第一特征向量与第一图像上的第一特征点相关联 并且每对的第二特征向量与第二图像上的第二特征点相关联。 使用与每个特征点对相关联的特征不相似度来确定每对特征点的对应映射(105),并且定义图像变换(106)以使用一个或多个对象(108)将第二图像与第一图像对准 成对的特征点是最不相似的。

    Method and system for hybrid rigid registration of 2D/3D medical images
    2.
    发明授权
    Method and system for hybrid rigid registration of 2D/3D medical images 有权
    2D / 3D医学图像混合刚性配准的方法和系统

    公开(公告)号:US07409108B2

    公开(公告)日:2008-08-05

    申请号:US10946204

    申请日:2004-09-21

    IPC分类号: G06K9/32 G06K9/68

    CPC分类号: G06K9/00208 G06T7/33 G06T7/35

    摘要: A method of aligning a pair of images with a first image and a second image, wherein said images comprise a plurality of intensities corresponding to a domain of points in a D-dimensional space includes identifying feature points on both images using the same criteria, computing a feature vector for each feature point, measuring a feature dissimilarity for each pair of feature vectors, wherein a first feature vector of each pair is associated with a first feature point on the first image, and a second feature vector of each pair is associated with a second feature point on the second image. A correspondence mapping for each pair of feature points is determined using the feature dissimilarity associated with each feature point pair, and an image transformation is defined to align the second image with the first image using one or more pairs of feature points that are least dissimilar.

    摘要翻译: 一种将一对图像与第一图像和第二图像对准的方法,其中所述图像包括对应于D维空间中的点的区域的多个强度,包括使用相同标准在两个图像上识别特征点,计算 每个特征点的特征向量,测量每对特征向量的特征不相似性,其中每对的第一特征向量与第一图像上的第一特征点相关联,并且每对的第二特征向量与 第二个图像上的第二个特征点。 使用与每个特征点对相关联的特征不相似度来确定每对特征点的对应关系,并且定义图像变换以使用至少不相似的一对或多对特征点将第二图像与第一图像对准。

    Method and system for hybrid rigid registration based on joint correspondences between scale-invariant salient region features
    3.
    发明授权
    Method and system for hybrid rigid registration based on joint correspondences between scale-invariant salient region features 失效
    基于尺度不变突出特征之间的联合对应的混合刚体配准的方法和系统

    公开(公告)号:US07362920B2

    公开(公告)日:2008-04-22

    申请号:US10945675

    申请日:2004-09-21

    IPC分类号: G06K9/32

    摘要: A method of aligning a pair of images includes providing a pair of images with a first image and a second image, wherein the images comprise a plurality of intensities corresponding to a domain of points in a D-dimensional space. Salient feature regions are identified in both the first image and the second image, a correspondence between each pair of salient feature regions is hypothesized, wherein a first region of each pair is on the first image and a second region of each pair is on the second image, the likelihood of the hypothesized correspondence of each pair of feature regions is measured, and a joint correspondence is determined from a set of pairs of feature regions with the greatest likelihood of correspondence.

    摘要翻译: 对准一对图像的方法包括提供具有第一图像和第二图像的一对图像,其中图像包括对应于D维空间中的点的域的多个强度。 在第一图像和第二图像两者中识别出显着特征区域,假设每对突出特征区域之间的对应关系,其中每对的第一区域在第一图像上,并且每一对的第二区域位于第二图像的第二图像上 测量每对特征区域的假设对应关系的可能性,并且从一组对应关系最大的特征区域对确定联合对应关系。

    Method and system for hybrid rigid registration based on joint correspondences between scale-invariant salient region features
    4.
    发明申请
    Method and system for hybrid rigid registration based on joint correspondences between scale-invariant salient region features 失效
    基于尺度不变突出特征之间的联合对应的混合刚体配准的方法和系统

    公开(公告)号:US20050078881A1

    公开(公告)日:2005-04-14

    申请号:US10945675

    申请日:2004-09-21

    摘要: A method of aligning a pair of images includes providing a pair of images with a first image and a second image, wherein the images comprise a plurality of intensities corresponding to a domain of points in a D-dimensional space. Salient feature regions are identified in both the first image and the second image, a correspondence between each pair of salient feature regions is hypothesized, wherein a first region of each pair is on the first image and a second region of each pair is on the second image, the likelihood of the hypothesized correspondence of each pair of feature regions is measured, and a joint correspondence is determined from a set of pairs of feature regions with the greatest likelihood of correspondence.

    摘要翻译: 对准一对图像的方法包括提供具有第一图像和第二图像的一对图像,其中图像包括对应于D维空间中的点的域的多个强度。 在第一图像和第二图像两者中识别出显着特征区域,假设每对突出特征区域之间的对应关系,其中每对的第一区域在第一图像上,并且每一对的第二区域位于第二图像的第二图像上 测量每对特征区域的假设对应关系的可能性,并且从一组对应关系最大的特征区域对确定联合对应关系。

    Fast parametric non-rigid image registration based on feature correspondences
    5.
    发明申请
    Fast parametric non-rigid image registration based on feature correspondences 失效
    基于特征对应的快速参数非刚性图像配准

    公开(公告)号:US20050249434A1

    公开(公告)日:2005-11-10

    申请号:US11099143

    申请日:2005-04-05

    IPC分类号: G06K9/00 G06K9/32 G06K9/64

    CPC分类号: G06K9/6211

    摘要: A method and system for non-rigidly registering a fixed to a moving image utilizing a B-Spline based free form deformation (FFD) model is disclosed. The methodology utilizes sparse feature correspondences to estimate an elastic deformation field in a closed form. In a multi-resolution manner, the method is able to recover small to large non-rigid deformations. The resulting deformation field is globally smooth and guarantees one-to-one mapping between the images being registered. The method generally comprises the steps of: detecting feature points on the fixed image and feature points on the moving image; assigning a feature vector to each feature point; calculating the dissimilarity of each pair of feature vectors for feature pairs on the fixed image and the moving image; calculating the correspondence between feature pairs based on the dissimilarity measure; solving for a dense deformation field P using a closed form FFD model; and transforming the moving image and the feature points on the moving image using a current FFD deformation field estimate.

    摘要翻译: 公开了一种使用B-Spline的自由形状变形(FFD)模型非固定地将固定到运动图像上的方法和系统。 该方法利用稀疏特征对应来估计封闭形式的弹性变形场。 以多分辨率方式,该方法能够恢复小到大的非刚性变形。 所产生的变形场全局平滑,并保证要注册的图像之间的一对一映射。 该方法通常包括以下步骤:检测固定图像上的特征点和运动图像上的特征点; 向每个特征点分配特征向量; 计算固定图像和运动图像上特征对的每对特征向量的不相似性; 基于不相似度计算特征对之间的对应关系; 使用封闭形式的FFD模型求解致密变形场P; 以及使用当前FFD变形场估计来变换运动图像上的运动图像和特征点。

    Automatic positioning of matching multi-planar image reformatting (MPR) views of multiple 3D medical images
    6.
    发明授权
    Automatic positioning of matching multi-planar image reformatting (MPR) views of multiple 3D medical images 有权
    自动定位多个3D医学图像的匹配多平面图像重新格式化(MPR)视图

    公开(公告)号:US07822254B2

    公开(公告)日:2010-10-26

    申请号:US11695096

    申请日:2007-04-02

    IPC分类号: G06K9/00

    CPC分类号: G06T7/30 G06T2207/30004

    摘要: A computer-implemented method is disclosed for comparing three dimensional (3D) digital medical images. The method uses a reference MPR to position subsequent MPRs in one or more other 3D digital medical images so their content matches the reference MPR. The matched MPRs may then be used by a medical professional to diagnose a patient condition. The ability to quickly and automatically position matching MPRs for multiple 3D images eases the medical staff workload and shortens diagnostics time. Matching MPRs provides an effective way to view the 3D volumes for anatomical changes over time and to monitor medical conditions such as stenosis and tumors.

    摘要翻译: 公开了一种用于比较三维(3D)数字医学图像的计算机实现的方法。 该方法使用参考MPR将一个或多个其他3D数字医学图像中的后续MPR定位,使得其内容与参考MPR匹配。 然后,医疗专业人员可以使用匹配的MPR来诊断患者状况。 快速,自动地为多个3D图像定位匹配的MPR的能力可以减轻医务人员的工作量,缩短诊断时间。 匹配MPR提供了一种有效的方式来查看3D体积,以便随着时间的推移进行解剖学变化,并监测诸如狭窄和肿瘤之类的医学状况。

    SYSTEM AND METHOD FOR SALIENT REGION FEATURE BASED 3D MULTI MODALITY REGISTRATION OF MEDICAL IMAGES
    8.
    发明申请
    SYSTEM AND METHOD FOR SALIENT REGION FEATURE BASED 3D MULTI MODALITY REGISTRATION OF MEDICAL IMAGES 有权
    基于区域特征的系统和方法基于3D多模态医学图像注册

    公开(公告)号:US20070047840A1

    公开(公告)日:2007-03-01

    申请号:US11380673

    申请日:2006-04-28

    IPC分类号: G06K9/32

    摘要: A method for aligning a pair of images includes providing a pair of images, identifying salient feature regions in both a first image and a second image, wherein each region is associated with a spatial scale, representing feature regions by a center point of each region, registering the feature points of one image with the feature points of the other image based on local intensities, ordering said feature pairs by a similarity measure, and optimizing a joint correspondence set of feature pairs by refining the center points to sub-pixel accuracy.

    摘要翻译: 用于对准一对图像的方法包括提供一对图像,识别第一图像和第二图像两者中的突出特征区域,其中每个区域与空间尺度相关联,其中每个区域的中心点表示特征区域, 基于局部强度将一个图像的特征点与另一图像的特征点对准,通过相似性度量对所述特征对进行排序,并通过将中心点精细化为子像素精度来优化特征对的联合对应集合。

    CORONARY RECONSTRUCTION FROM ROTATIONAL X-RAY PROJECTION SEQUENCE
    9.
    发明申请
    CORONARY RECONSTRUCTION FROM ROTATIONAL X-RAY PROJECTION SEQUENCE 失效
    旋转X射线投影序列的冠状重建

    公开(公告)号:US20090141968A1

    公开(公告)日:2009-06-04

    申请号:US12275714

    申请日:2008-11-21

    IPC分类号: G06K9/00

    摘要: A method for three-dimensional reconstruction of a branched object from a rotational sequence of images of the branched object includes segmenting the branched object from each image of the sequence, extracting centerlines of the branched object, performing symbolic reconstruction via a stereo correspondence matching between the centerlines from different views of the sequence of images using a graph cut-based optimization, and creating a three-dimensional tomographic reconstruction of the branched object compensated for motion of the branched object between the images of the sequence.

    摘要翻译: 从分支对象的图像的旋转顺序对分支对象进行三维重建的方法包括从分支对象的每个图像分割分支对象,提取分支对象的中心线,通过在对象之间的立体对应匹配进行符号重建 使用基于图切割优化的图像序列的不同视图的中心线,以及创建分支对象的三维断层重建,以补偿分支对象在序列图像之间的运动。

    Registering 2D and 3D data using 3D ultrasound data
    10.
    发明授权
    Registering 2D and 3D data using 3D ultrasound data 有权
    使用3D超声数据注册2D和3D数据

    公开(公告)号:US08126239B2

    公开(公告)日:2012-02-28

    申请号:US11874266

    申请日:2007-10-18

    IPC分类号: G06K9/00

    摘要: A fluoroscopy image is registered with data representing a volume, identifying a catheter position relative to a volume represented by preoperative volume data. The catheter position relative to a patient volume represented by data acquired without scanning the catheter is displayed. For example, a 2D fluoroscopy image is registered with respect to coordinates of a 3D preoperative CT or MRI volume by registering the fluoroscopy image and the preoperative volume to 3D ultrasound coordinates.

    摘要翻译: 用表示体积的数据记录荧光透视图像,识别相对于由术前体积数据表示的体积的导管位置。 显示相对于由不扫描导管获取的数据表示的患者体积的导管位置。 例如,通过将荧光透视图像和术前体积登记到3D超声坐标,相对于3D术前CT或MRI体积的坐标登记2D透视图像。