Method and system for regression-based object detection in medical images
    91.
    发明授权
    Method and system for regression-based object detection in medical images 有权
    医学图像中基于回归的物体检测方法与系统

    公开(公告)号:US07949173B2

    公开(公告)日:2011-05-24

    申请号:US11866572

    申请日:2007-10-03

    IPC分类号: G06K9/00 A61B6/00

    摘要: A method and system for regression-based object detection in medical images is disclosed. A regression function for predicting a location of an object in a medical image based on an image patch is trained using image-based boosting ridge regression (IBRR). The trained regression function is used to determine a difference vector based on an image patch of a medical image. The difference vector represents the difference between the location of the image patch and the location of a target object. The location of the target object in the medical image is predicted based on the difference vector determined by the regression function.

    摘要翻译: 公开了一种用于医学图像中基于回归的物体检测的方法和系统。 使用基于图像的增强脊回归(IBRR)训练用于基于图像块预测医学图像中的对象的位置的回归函数。 训练回归函数用于基于医学图像的图像块来确定差分矢量。 差分向量表示图像块的位置与目标对象的位置之间的差异。 基于由回归函数确定的差分向量来预测目标对象在医学图像中的位置。

    Systems and methods for automated diagnosis and decision support for heart related diseases and conditions
    94.
    发明授权
    Systems and methods for automated diagnosis and decision support for heart related diseases and conditions 有权
    用于心脏相关疾病和病症的自动诊断和决策支持的系统和方法

    公开(公告)号:US07912528B2

    公开(公告)日:2011-03-22

    申请号:US10876801

    申请日:2004-06-25

    IPC分类号: A61B5/05

    CPC分类号: G16H50/20 G06F19/00

    摘要: CAD (computer-aided diagnosis) systems and applications for cardiac imaging are provided, which implement methods to automatically extract and analyze features from a collection of patient information (including image data and/or non-image data) of a subject patient, to provide decision support for various aspects of physician workflow including, for example, automated assessment of regional myocardial function through wall motion analysis, automated diagnosis of heart diseases and conditions such as cardiomyopathy, coronary artery disease and other heart-related medical conditions, and other automated decision support functions. The CAD systems implement machine-learning techniques that use a set of training data obtained (learned) from a database of labeled patient cases in one or more relevant clinical domains and/or expert interpretations of such data to enable the CAD systems to “learn” to analyze patient data and make proper diagnostic assessments and decisions for assisting physician workflow.

    摘要翻译: 提供了用于心脏成像的CAD(计算机辅助诊断)系统和应用,其实现了从受试患者的患者信息(包括图像数据和/或非图像数据)的集合中自动提取和分析特征的方法,以提供 对医师工作流程的各个方面的决策支持,包括例如通过壁运动分析自动评估区域性心肌功能,心脏病的自动诊断和诸如心肌病,冠状动脉疾病和其他与心脏相关的医疗状况等条件,以及其他自动化决策 支持功能。 CAD系统实施机器学习技术,其使用从一个或多个相关临床领域的标记的患者病例的数据库获得(学习)的一组训练数据和/或对这些数据的专家解释,使得CAD系统能够“学习” 分析患者数据,进行适当的诊断评估和决策,以协助医师的工作流程。

    System and Method for Coronary Digital Subtraction Angiography
    96.
    发明申请
    System and Method for Coronary Digital Subtraction Angiography 有权
    冠状动脉数字减影血管造影术的系统与方法

    公开(公告)号:US20110033102A1

    公开(公告)日:2011-02-10

    申请号:US12774146

    申请日:2010-05-05

    IPC分类号: G06K9/00

    摘要: A method and system for extracting coronary vessels fluoroscopic image sequences using coronary digital subtraction angiography (DSA) are disclosed. A set of mask images of a coronary region is received, and a sequence of contrast images for the coronary region is received. For each contrast image, a motion estimate is calculated between each of the mask images and a background region of the contrast image and a covariance is calculated for each motion estimate. Multiple background layer predictions are generated by generating a background layer prediction for each mask image based on the calculated motion estimate and covariance. The multiple background layer estimates are combined using statistical fusion to generate a final estimated background layer. The final estimated background layer is subtracted from the contrast image to extract a coronary vessel layer for the contrast image.

    摘要翻译: 公开了使用冠状动脉数字减影血管造影(DSA)提取冠脉血管荧光镜图像序列的方法和系统。 接收冠状动脉区域的一组掩模图像,并且接收冠状动脉区域的对比度图像序列。 对于每个对比度图像,在每个掩模图像和对比度图像的背景区域之间计算运动估计,并且针对每个运动估计计算协方差。 通过基于计算的运动估计和协方差为每个掩模图像生成背景层预测来生成多个背景层预测。 使用统计融合来组合多个背景层估计以产生最终估计的背景层。 从对比度图像中减去最终估计的背景层,以提取对比度图像的冠状血管层。

    System and method for using a similarity function to perform appearance matching in image pairs
    97.
    发明授权
    System and method for using a similarity function to perform appearance matching in image pairs 有权
    使用相似度函数执行图像对中的外观匹配的系统和方法

    公开(公告)号:US07831074B2

    公开(公告)日:2010-11-09

    申请号:US11539989

    申请日:2006-10-10

    IPC分类号: G06K9/00 G06K9/62 H04N5/225

    摘要: The present invention is directed to a method for populating a database with a set of images of an anatomical structure. The database is used to perform appearance matching in image pairs of the anatomical structure. A set of image pairs of anatomical structures is received, where each image pair is annotated with a plurality of location-sensitive regions that identify a particular aspect of the anatomical structure. Weak learners are iteratively selected and an image patch is identified. A boosting process is used to identify a strong classifier based on responses to the weak learners applied to the identified image patch for each image pair. The responses comprise a feature response and a location response associated with the image patch. Positive and negative image pairs are generated. The positive and negative image pairs are used to learn a similarity function. The learned similarity function and iteratively selected weak learners are stored in the database.

    摘要翻译: 本发明涉及一种用解剖结构的一组图像填充数据库的方法。 该数据库用于在解剖结构的图像对中执行外观匹配。 接收一组解剖结构的图像对,其中每个图像对用多个识别解剖结构的特定方面的位置敏感区域注释。 迭代选择弱学习者,并识别图像补丁。 基于对应用于每个图像对的所识别的图像补丁的弱学习者的响应,使用增强过程来识别强分类器。 响应包括与图像块相关联的特征响应和位置响应。 产生正负图像对。 正负图像对用于学习相似度函数。 学习的相似度函数和迭代选择的弱学习者存储在数据库中。