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    Method and System for Needle Tracking in Fluoroscopic Image Sequences
    31.
    发明申请
    Method and System for Needle Tracking in Fluoroscopic Image Sequences 有权
    荧光图像序列中针跟踪的方法和系统

    公开(公告)号：US20110064189A1

    公开(公告)日：2011-03-17

    申请号：US12880319

    申请日：2010-09-13

    申请人： Peng Wang ,  Marcus Pfister ,  Terrence Chen ,  Martin Ostermeier ,  Dorin Comaniciu

    发明人： Peng Wang ,  Marcus Pfister ,  Terrence Chen ,  Martin Ostermeier ,  Dorin Comaniciu

    IPC分类号： A61B6/02

    CPC分类号： A61B6/12

    摘要： A method and system for tracking a needle in a fluoroscopic image sequence is disclosed. In order to track a needle in a fluoroscopic image sequence, the needle is initialized in a first frame of the fluoroscopic image sequence. Needle segments are detected in each subsequent frame of the fluoroscopic image sequence, and the needle is detected in each frame of the fluoroscopic image by tracking the needle from a previous frame of the fluoroscopic image sequence based on the detected needle segments in the current frame.

    摘要翻译： 公开了一种用于在荧光镜像图像序列中跟踪针的方法和系统。 为了在透视图像序列中跟踪针，在荧光镜图像序列的第一帧中初始化针。 在透视图像序列的每个随后的帧中检测针段，并且基于当前帧中检测到的针段，通过从荧光透视图像序列的先前帧跟踪针来在荧光镜图像的每个帧中检测针。

    Needle Enhancement in Diagnostic Ultrasound Imaging
    34.
    发明申请
    Needle Enhancement in Diagnostic Ultrasound Imaging 有权
    针刺增强诊断超声成像

    公开(公告)号：US20140187942A1

    公开(公告)日：2014-07-03

    申请号：US13733310

    申请日：2013-01-03

    申请人： Peng Wang ,  Terrence Chen ,  Ali Kamen ,  Jeffrey Stoll ,  Dorin Comaniciu ,  Sara Good

    发明人： Peng Wang ,  Terrence Chen ,  Ali Kamen ,  Jeffrey Stoll ,  Dorin Comaniciu ,  Sara Good

    IPC分类号： A61B8/08

    CPC分类号： A61B8/0841 ,  A61B8/461 ,  A61B8/5246

    摘要： A needle is enhanced in a medical diagnostic ultrasound image. The image intensities associated with a needle in an image are adaptively increased and/or enhanced by compounding from a plurality of ultrasound images. Filtering methods and probabilistic methods are used to locate possible needle locations. In one approach, possible needles are found in component frames that are acquired at the same time but at different beam orientations. The possible needles are associated with each other across the component frames and false detections are removed based on the associations. In one embodiment of needle detection in an ultrasound component frame, lines are found first. The lines are then searched to find possible needle segments. In another embodiment, data from different times may be used to find needle motion and differences from a reference, providing the features in additional to features from a single component frame for needle detection.

    摘要翻译： 在医疗诊断超声图像中增强针。 通过从多个超声图像的复合来自适应地增加和/或增强与图像中的针相关联的图像强度。 使用过滤方法和概率方法来定位可能的针位置。 在一种方法中，可以在同时获取但是以不同波束取向获得的分量帧中找到可能的针。 可能的针在组件框架之间彼此相关联，并且基于关联来去除错误检测。 在超声组件框架中的针检测的一个实施例中，首先找到线。 然后搜索线以找到可能的针段。 在另一个实施例中，来自不同时间的数据可用于从参考找到针运动和差异，从单个组件框架中提供用于针检测的特征附加的特征。

    Method and system for learning based object detection in medical images
    35.
    发明授权
    Method and system for learning based object detection in medical images 有权
    医学图像学习基于物体检测的方法与系统

    公开(公告)号：US08737725B2

    公开(公告)日：2014-05-27

    申请号：US13235747

    申请日：2011-09-19

    申请人： Peng Wang ,  Terrence Chen ,  Shaohua Kevin Zhou ,  Dorin Comaniciu ,  Martin Ostermeier

    发明人： Peng Wang ,  Terrence Chen ,  Shaohua Kevin Zhou ,  Dorin Comaniciu ,  Martin Ostermeier

    IPC分类号： G06K9/62

    CPC分类号： G06K9/4614 ,  G06K9/6257 ,  G06K9/6282

    摘要： Methods and Systems for training a learning based classifier and object detection in medical images is disclosed. In order to train a learning based classifier, positive training samples and negative training samples are generated based on annotated training images. Features for the positive training samples and the negative training samples are extracted. The features include an extended Haar feature set including tip features and corner features. A discriminative classifier is trained based on the extracted features.

    摘要翻译： 公开了用于训练医学图像中基于学习的分类器和对象检测的方法和系统。 为了训练基于学习的分类器，基于注释的训练图像生成正训练样本和负训练样本。 提取正训练样本和负训练样本的特征。 功能包括扩展的Haar功能集，包括提示功能和角特征。 基于提取的特征对歧视性分类器进行训练。

    Method and system for needle tracking in fluoroscopic image sequences
    36.
    发明授权
    Method and system for needle tracking in fluoroscopic image sequences 有权
    透视图像序列中针跟踪的方法和系统

    公开(公告)号：US08675914B2

    公开(公告)日：2014-03-18

    申请号：US12880319

    申请日：2010-09-13

    申请人： Peng Wang ,  Marcus Pfister ,  Terrence Chen ,  Martin Ostermeier ,  Dorin Comaniciu

    发明人： Peng Wang ,  Marcus Pfister ,  Terrence Chen ,  Martin Ostermeier ,  Dorin Comaniciu

    IPC分类号： G06K9/00

    CPC分类号： A61B6/12

    摘要： A method and system for tracking a needle in a fluoroscopic image sequence is disclosed. In order to track a needle in a fluoroscopic image sequence, the needle is initialized in a first frame of the fluoroscopic image sequence. Needle segments are detected in each subsequent frame of the fluoroscopic image sequence, and the needle is detected in each frame of the fluoroscopic image by tracking the needle from a previous frame of the fluoroscopic image sequence based on the detected needle segments in the current frame.

    摘要翻译： 公开了一种用于在荧光镜像图像序列中跟踪针的方法和系统。 为了在透视图像序列中跟踪针，在荧光镜图像序列的第一帧中初始化针。 在透视图像序列的每个随后的帧中检测针段，并且基于当前帧中检测到的针段，通过从荧光透视图像序列的先前帧跟踪针来在荧光镜图像的每个帧中检测针。

    Method and System for Image Based Device Tracking for Co-registration of Angiography and Intravascular Ultrasound Images
    37.
    发明申请
    Method and System for Image Based Device Tracking for Co-registration of Angiography and Intravascular Ultrasound Images 有权
    用于血管造影和血管内超声图像共同配准的基于图像的设备跟踪的方法和系统

    公开(公告)号：US20120059253A1

    公开(公告)日：2012-03-08

    申请号：US13171560

    申请日：2011-06-29

    申请人： Peng Wang ,  Simone Prummer ,  Terrence Chen ,  Dorin Comaniciu ,  Olivier Ecabert ,  Martin Ostermeier

    发明人： Peng Wang ,  Simone Prummer ,  Terrence Chen ,  Dorin Comaniciu ,  Olivier Ecabert ,  Martin Ostermeier

    IPC分类号： A61B6/00 ,  A61B8/00

    CPC分类号： A61B8/0891 ,  A61B6/00 ,  A61B6/12 ,  A61B6/481 ,  A61B6/487 ,  A61B6/504 ,  A61B6/5247 ,  A61B8/12 ,  A61B8/5238 ,  G06T7/251 ,  G06T2207/10121 ,  G06T2207/10132

    摘要： A method and system for co-registration of angiography data and intra vascular ultrasound (IVUS) data is disclosed. A vessel branch is detected in an angiogram image. A sequence of IVUS images is received from an IVUS transducer while the IVUS transducer is being pulled back through the vessel branch. A fluoroscopic image sequence is received while the IVUS transducer is being pulled back through the vessel branch. The IVUS transducer and a guiding catheter tip are detected in each frame of the fluoroscopic image sequence. The IVUS transducer detected in each frame of the fluoroscopic image sequence is mapped to a respective location in the detected vessel branch of the angiogram image. Each of the IVUS images is registered to a respective location in the detected vessel branch of the angiogram image based on the mapped location of the IVUS transducer detected in a corresponding frame of the fluoroscopic image sequence.

    摘要翻译： 公开了用于血管造影数据和血管内超声（IVUS）数据共同配准的方法和系统。 在血管造影图像中检测血管分支。 当IVUS传感器被拉回血管分支时，从IVUS换能器接收一系列IVUS图像。 当IVUS传感器被拉回通过血管分支时，接收透视图像序列。 在荧光镜图像序列的每个帧中检测IVUS换能器和引导导管尖端。 在荧光镜像图像序列的每个帧中检测到的IVUS换能器被映射到血管造影图像的检测到的血管分支中的相应位置。 基于在荧光镜像图像序列的相应帧中检测到的IVUS换能器的映射位置，将每个IVUS图像登记在血管造影图像的检测的血管分支中的相应位置。

    Method and system for detection and tracking of coronary sinus catheter electrodes in fluoroscopic images
    38.
    发明授权
    Method and system for detection and tracking of coronary sinus catheter electrodes in fluoroscopic images 有权
    荧光镜检查和跟踪冠状静脉窦导管电极的方法和系统

    公开(公告)号：US08892186B2

    公开(公告)日：2014-11-18

    申请号：US13229855

    申请日：2011-09-12

    申请人： Wen Wu ,  Terrence Chen ,  Peng Wang ,  Norbert Strobel ,  Shaohua Kevin Zhou ,  Dorin Comaniciu

    发明人： Wen Wu ,  Terrence Chen ,  Peng Wang ,  Norbert Strobel ,  Shaohua Kevin Zhou ,  Dorin Comaniciu

    IPC分类号： A61B5/05 ,  G06T7/00 ,  G06T7/20 ,  A61B19/00

    CPC分类号： G06T7/0014 ,  A61B2034/2065 ,  A61B2090/376 ,  G06K2209/057 ,  G06T7/20 ,  G06T2207/10121 ,  G06T2207/30021 ,  G06T2207/30048

    摘要： A method and system for detecting and tracking coronary sinus (CS) catheter electrodes in a fluoroscopic image sequence is disclosed. An electrode model is initialized in a first frame of the fluoroscopic image sequence based on input locations of CS sinus catheter electrodes in the first frame. The electrode model is tracked in subsequent frames of the fluoroscopic image sequence by detecting electrode position candidates in the subsequent frames of the fluoroscopic image sequence using at least one trained electrode detector, generating electrode model candidates in the subsequent frames based on the detected electrode position candidates, calculating a probability score for each of the electrode model candidates, and selecting an electrode model candidate based on the probability score.

    摘要翻译： 公开了一种用于在荧光镜图像序列中检测和跟踪冠状窦（CS）导管电极的方法和系统。 基于第一帧中的CS窦导管电极的输入位置，在荧光镜图像序列的第一帧中初始化电极模型。 通过使用至少一个经过训练的电极检测器检测荧光镜像图像序列的后续帧中的电极位置候选物，在荧光图像序列的后续帧中跟踪电极模型，基于检测到的电极位置候选产生后续帧中的电极模型候选 计算每个电极模型候选的概率分数，并且基于概率分数来选择电极模型候选。

    Shape modeling and detection of catheter
    40.
    发明授权
    Shape modeling and detection of catheter 有权
    导管形状建模与检测

    公开(公告)号：US08374415B2

    公开(公告)日：2013-02-12

    申请号：US13079846

    申请日：2011-04-05

    申请人： Sheng Yi ,  Terrence Chen ,  Peng Wang ,  Dorin Comaniciu

    发明人： Sheng Yi ,  Terrence Chen ,  Peng Wang ,  Dorin Comaniciu

    IPC分类号： G06K9/00 ,  A61B6/02

    CPC分类号： A61B6/12 ,  A61B6/487 ,  A61B6/5211

    摘要： A method and system for detecting and modeling a catheter in a fluoroscopic image is disclosed. Catheter tip candidates and catheter body candidates are detected in the fluoroscopic image. One of a plurality of trained shape models is fitted to the catheter tip candidates and the catheter body candidates in order to model a shape of the catheter in the fluoroscopic image.

    摘要翻译： 公开了一种用于在透视图像中检测和建模导管的方法和系统。 在透视图像中检测导管尖端候选物和导管体候选物。 为了在透视图像中对导管的形状进行建模，将多个训练形状模型中的一个拟合到导管尖端候选物和导管体候选物。