Stent viewing using a learning based classifier in medical imaging
    11.
    发明授权
    Stent viewing using a learning based classifier in medical imaging 有权
    在医学成像中使用基于学习的分类器进行支架观察

    公开(公告)号:US08311308B2

    公开(公告)日:2012-11-13

    申请号:US12960625

    申请日:2010-12-06

    IPC分类号: G06K9/00 A61B6/02

    摘要: Stent viewing is provided in medical imaging. Stent images are provided with minimal or no user input of spatial locations. Images showing contrast agent are distinguished from other images in a sequence. After aligning non-contrast images, the images are compounded to enhance the stent. The contrast agent images are used to identify the vessel. A contrast agent image is aligned with the enhanced stent or other image to determine the relative vessel location. An indication of the vessel wall may be displayed in an image also showing the stent. A preview images may be output. A guide wire may be used to detect the center line for vessel identification. Various detections are performed using a machine-trained classifier or classifiers.

    摘要翻译: 在医疗成像中提供支架观察。 支架图像提供最小或没有空间位置的用户输入。 显示造影剂的图像与序列中的其他图像不同。 对准非对比度图像后,复合图像以增强支架。 造影剂图像用于识别血管。 造影剂图像与增强的支架或其他图像对准以确定相对血管位置。 可以在也显示支架的图像中显示血管壁的指示。 可以输出预览图像。 引导线可用于检测用于船舶识别的中心线。 使用机器训练的分类器或分类器执行各种检测。

    Stent marker detection using a learning based classifier in medical imaging
    13.
    发明授权
    Stent marker detection using a learning based classifier in medical imaging 有权
    在医学成像中使用基于学习的分类器进行支架标记检测

    公开(公告)号:US09119573B2

    公开(公告)日:2015-09-01

    申请号:US12960635

    申请日:2010-12-06

    IPC分类号: A61B6/12 A61B6/00

    CPC分类号: A61B6/12 A61B6/503 A61B6/504

    摘要: Stent marker detection is automatically performed. Stent markers in fluoroscopic images or other markers in other types of imaging are detected using a machine-learnt classifier. Hierarchal classification may be used, such as detecting individual markers with one classifier and then detecting groups of markers (e.g., a pair) with a joint classifier. The detection may be performed in a single image and without user indication of a location.

    摘要翻译: 自动执行支架标记检测。 使用机器学习分类器检测透视图像或其他类型成像中的其他标记物的支架标记。 可以使用分层分类,例如用一个分类器检测单个标记,然后用联合分类器检测标记组(例如,一对)。 检测可以在单个图像中执行,而不用用户指示位置。

    System and method for coronary digital subtraction angiography
    17.
    发明授权
    System and method for coronary digital subtraction angiography 有权
    冠状动脉数字减影血管造影的系统和方法

    公开(公告)号:US08345944B2

    公开(公告)日:2013-01-01

    申请号:US12509514

    申请日:2009-07-27

    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, vessel regions are detected in the contrast image using learning-based vessel segment detection and a background region of the contrast image is determined based on the detected vessel regions. Background motion is estimated between one of the mask images and the background region of the contrast image by estimating a motion field between the mask image and the background image and performing covariance-based filtering over the estimated motion field. The mask image is then warped based on the estimated background motion to generate an estimated background layer. The 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。 对于每个对比图像,使用基于学习的血管段检测在对比图像中检测血管区域,并且基于检测到的血管区域确定造影剂图像的背景区域。 通过估计掩模图像和背景图像之间的运动场并且在估计的运动场上执行协方差滤波来估计背景运动在掩模图像和对比度图像的背景区域中的一个之间。 然后基于估计的背景运动来改变掩模图像以产生估计的背景层。 从对比图像中减去估计的背景层,以提取对比度图像的冠状血管层。

    System and Method for Coronary Digital Subtraction Angiography
    18.
    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:US20100034446A1

    公开(公告)日:2010-02-11

    申请号:US12509514

    申请日:2009-07-27

    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, vessel regions are detected in the contrast image using learning-based vessel segment detection and a background region of the contrast image is determined based on the detected vessel regions. Background motion is estimated between one of the mask images and the background region of the contrast image by estimating a motion field between the mask image and the background image and performing covariance-based filtering over the estimated motion field. The mask image is then warped based on the estimated background motion to generate an estimated background layer. The 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。 对于每个对比图像,使用基于学习的血管段检测在对比图像中检测血管区域,并且基于检测到的血管区域确定造影剂图像的背景区域。 通过估计掩模图像和背景图像之间的运动场并且在估计的运动场上执行协方差滤波来估计背景运动在掩模图像和对比度图像的背景区域中的一个之间。 然后基于估计的背景运动来改变掩模图像以产生估计的背景层。 从对比图像中减去估计的背景层,以提取对比度图像的冠状血管层。