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1. 发明授权

US08165377B2 System and method for determining a cardiac axis 有权
标题翻译：用于确定心轴的系统和方法
公开(公告)号：US08165377B2
公开(公告)日：2012-04-24
申请号：US12323594
申请日：2008-11-26
申请人： Vivek Vaidya , Rakesh Mullick , Shekhar Dwivedi , Thomas K. F. Foo , Christopher Judson Hardy , Daniel James Blezek , Umesha Perdoor Srinivas Adiga
发明人： Vivek Vaidya , Rakesh Mullick , Shekhar Dwivedi , Thomas K. F. Foo , Christopher Judson Hardy , Daniel James Blezek , Umesha Perdoor Srinivas Adiga
IPC分类号： G06K9/00 , A61B5/05
CPC分类号： A61B5/055 , A61B5/0037 , A61B6/032 , A61B6/503 , A61B8/14 , G06T7/75 , G06T2207/10088 , G06T2207/30048
摘要： An apparatus, system and method to determine a coordinate system of a heart includes an imager and a computer. The computer is programmed to acquire a first set of initialization imaging data from an anatomical region of a free-breathing subject. A portion of the first set of initialization imaging data includes organ data, which includes cardiac data. The computer is further programmed to determine a location of a central region of a left ventricle of a heart, where the location is based on the organ data and a priori information. The computer is also programmed to determine a short axis of the left ventricle based on the determined location, acquire a first set of post-initialization imaging data from the free-breathing subject from an imaging plane orientation based on the determination of the short axis, and reconstruct at least one image from the first set of post-initialization imaging data.
摘要翻译：用于确定心脏坐标系的装置，系统和方法包括成像器和计算机。计算机被编程为从自由呼吸对象的解剖区域获取第一组初始化成像数据。第一组初始化成像数据的一部分包括包括心脏数据的器官数据。计算机还被编程为确定心脏左心室的中心区域的位置，其中位置基于器官数据和先验信息。计算机还被编程为基于确定的位置来确定左心室的短轴，基于短轴的确定，从成像平面取向获取来自自由呼吸对象的第一组初始初始化后成像数据，并且从所述第一组初始化后成像数据重建至少一个图像。

2. 发明申请

US20100128947A1 SYSTEM AND METHOD FOR DETERMINING A CARDIAC AXIS 有权
标题翻译：用于确定心脏轴的系统和方法
公开(公告)号：US20100128947A1
公开(公告)日：2010-05-27
申请号：US12323594
申请日：2008-11-26
申请人： Vivek Vaidya , Rakesh Mullick , Shekhar Dwivedi , Thomas K.F. Foo , Christopher Judson Hardy , Daniel James Blezek , Umesha Perdoor Srinivas Adiga
发明人： Vivek Vaidya , Rakesh Mullick , Shekhar Dwivedi , Thomas K.F. Foo , Christopher Judson Hardy , Daniel James Blezek , Umesha Perdoor Srinivas Adiga
IPC分类号： G06K9/00 , A61B5/05
CPC分类号： A61B5/055 , A61B5/0037 , A61B6/032 , A61B6/503 , A61B8/14 , G06T7/75 , G06T2207/10088 , G06T2207/30048
摘要： An apparatus, system and method to determine a coordinate system of a heart includes an imager and a computer. The computer is programmed to acquire a first set of initialization imaging data from an anatomical region of a free-breathing subject. A portion of the first set of initialization imaging data includes organ data, which includes cardiac data. The computer is further programmed to determine a location of a central region of a left ventricle of a heart, where the location is based on the organ data and a priori information. The computer is also programmed to determine a short axis of the left ventricle based on the determined location, acquire a first set of post-initialization imaging data from the free-breathing subject from an imaging plane orientation based on the determination of the short axis, and reconstruct at least one image from the first set of post-initialization imaging data.
摘要翻译：用于确定心脏坐标系的装置，系统和方法包括成像器和计算机。计算机被编程为从自由呼吸对象的解剖区域获取第一组初始化成像数据。第一组初始化成像数据的一部分包括包括心脏数据的器官数据。计算机还被编程为确定心脏左心室的中心区域的位置，其中位置基于器官数据和先验信息。计算机还被编程为基于确定的位置来确定左心室的短轴，基于短轴的确定，从成像平面取向获取来自自由呼吸对象的第一组初始初始化后成像数据，并且从所述第一组初始化后成像数据重建至少一个图像。

3. 发明申请

US20100142841A1 SYSTEM AND METHOD FOR GENERATING METAVOLUMES 有权
标题翻译：用于生成元素的系统和方法
公开(公告)号：US20100142841A1
公开(公告)日：2010-06-10
申请号：US12328922
申请日：2008-12-05
申请人： Vivek Prabhakar Vaidya , Rakesh Mullick , Shekhar Dwivedi
发明人： Vivek Prabhakar Vaidya , Rakesh Mullick , Shekhar Dwivedi
IPC分类号： G06K9/36
CPC分类号： G01R33/56 , G01R33/5608 , G01R33/5635
摘要： A method is provided for generating a metavolume for reconstructing an image. The method provides for acquiring a plurality of low-resolution images of an imaged volume, the plurality of low-resolution images obtained from one or more imaging planes and merging the plurality of low-resolution images using a statistical operation to generate a metavolume. Systems and computer programs that afford functionality of the type defined by this method may be provided by the present technique.
摘要翻译：提供了一种用于生成用于重构图像的元音的方法。该方法提供获取成像体积的多个低分辨率图像，从一个或多个成像平面获得的多个低分辨率图像，并且使用统计运算合并多个低分辨率图像以生成元折射。提供由该方法定义的类型的功能的系统和计算机程序可以由本技术提供。

4. 发明授权

US08285066B2 System and method for generating high resolution images 有权
标题翻译：用于生成高分辨率图像的系统和方法
公开(公告)号：US08285066B2
公开(公告)日：2012-10-09
申请号：US12328922
申请日：2008-12-05
申请人： Vivek Prabhakar Vaidya , Rakesh Mullick , Shekhar Dwivedi
发明人： Vivek Prabhakar Vaidya , Rakesh Mullick , Shekhar Dwivedi
IPC分类号： G06K9/40 , G06K9/00 , G06K9/36
CPC分类号： G01R33/56 , G01R33/5608 , G01R33/5635
摘要： A method is provided for generating a metavolume for reconstructing an image. The method provides for acquiring a plurality of low-resolution images of an imaged volume, the plurality of low-resolution images obtained from one or more imaging planes and merging the plurality of low-resolution images using a statistical operation to generate a metavolume. Systems and computer programs that afford functionality of the type defined by this method may be provided by the present technique.
摘要翻译：提供了一种用于生成用于重构图像的元音的方法。该方法提供获取成像体积的多个低分辨率图像，从一个或多个成像平面获得的多个低分辨率图像，并且使用统计运算合并多个低分辨率图像以生成元音。提供由该方法定义的类型的功能的系统和计算机程序可以由本技术提供。

5. 发明申请

US20130208964A1 SYSTEM FOR THE SEGMENTATION OF A MEDICAL IMAGE 审中-公开
标题翻译：医学图像分割系统
公开(公告)号：US20130208964A1
公开(公告)日：2013-08-15
申请号：US13880991
申请日：2011-10-17
申请人： Shekhar Dwivedi
发明人： Shekhar Dwivedi
IPC分类号： G06K9/34
CPC分类号： G06K9/34 , G06T7/10 , G06T2207/10004 , G06T2207/30004
摘要： A system (100) for processing a medical image, the system comprising an input (110) for receiving the medical image; a processor (120) for obtaining an image characteristic of the medical image; a categorizer (130) for obtaining a category of the medical image in dependence on the image characteristic; and an algorithm selector (140) for configuring a segmentation means (150) by selecting a segmentation algorithm amongst a plurality of segmentation algorithms in dependence on the category, for enabling the segmentation (150) means to segment the medical image with the segmentation algorithm for obtaining a region of interest.
摘要翻译：一种用于处理医学图像的系统（100），该系统包括用于接收医学图像的输入（110）; 用于获得医学图像的图像特征的处理器（120）; 用于根据图像特征获得医学图像的类别的分类器（130）; 以及用于通过根据所述类别在多个分割算法中选择分割算法来配置分割装置（150）的算法选择器（140），用于使分割（150）装置能够利用分割算法来划分医学图像，获得感兴趣的区域。

6. 发明申请

US20130142410A1 HEART LOCATION AND VERIFICATION IN EMISSION IMAGES 有权
标题翻译：排放图像中的心位置和验证
公开(公告)号：US20130142410A1
公开(公告)日：2013-06-06
申请号：US13817148
申请日：2011-07-18
申请人： Shekhar Dwivedi , Xiyun Song , Teimuraz Bandzava , Jinghan Ye , Satrajit Misra
发明人： Shekhar Dwivedi , Xiyun Song , Teimuraz Bandzava , Jinghan Ye , Satrajit Misra
IPC分类号： A61B6/00 , A61B5/0402 , G06K9/46 , A61B6/03
CPC分类号： A61B6/5288 , A61B5/0402 , A61B6/037 , A61B6/503 , A61B6/5264 , G06K9/46 , G06T7/254 , G06T11/005 , G06T2207/10108 , G06T2207/30048 , G06T2211/412
摘要： An apparatus comprises: an imaging system (10) configured to acquire emission data from a cyclically varying element; a monitoring instrument (20, 22) configured to measure the cyclical varying of the cyclically varying element; and an electronic device (40) configured to locate an image feature corresponding to the cyclically varying element in the acquired emission data based on correlation of time variation of the emission data with the cyclical varying of the cyclically varying element measured by the monitoring instrument. The located image feature may be verified by: thresholding a projection image generated from the emission data to generate a mask image; identifying in the mask image one of (i) a hollow circular feature, (ii) a hollow oval feature, (iii) a circular cavity feature, and (iv) an oval cavity feature; and verifying the located image feature based on whether the identifying operation is successful
摘要翻译：一种装置包括：成像系统（10），被配置为从循环变化的元件获取发射数据; 被配置为测量循环变化元件的循环变化的监测仪器（20,22）以及电子设备（40），其被配置为基于所述发射数据的时间变化与由所述监测仪器测量的所述循环变化元件的周期性变化的相关性来定位所获取的发射数据中对应于所述循环变化元素的图像特征。定位的图像特征可以通过以下方式来验证：阈值化从发射数据产生的投影图像以生成掩模图像; 在掩模图像中识别（i）中空圆形特征，（ii）中空椭圆形特征，（iii）圆形空腔特征和（iv）椭圆形腔特征中的一个; 以及基于所述识别操作是否成功来验证所述定位图像特征

7. 发明授权

US08958620B2 Region of interest definition in cardiac imaging 有权
标题翻译：心脏成像中兴趣区域定义
公开(公告)号：US08958620B2
公开(公告)日：2015-02-17
申请号：US13580166
申请日：2011-02-08
申请人： Shekhar Dwivedi , Manish Kumar Sharma , Narayan Ayyakad Krishnan , Yogish Mallya
发明人： Shekhar Dwivedi , Manish Kumar Sharma , Narayan Ayyakad Krishnan , Yogish Mallya
IPC分类号： G06K9/00 , G06T7/00 , A61B6/00
CPC分类号： G06T7/0081 , A61B6/037 , A61B6/469 , A61B6/503 , A61B6/507 , G06T7/0012 , G06T7/11 , G06T7/136 , G06T2207/10108 , G06T2207/20104 , G06T2207/20132 , G06T2207/30048
摘要： A method for cardiac imaging for determining a myocardial region of interest (ROI) is disclosed. The method includes acquiring functional imaging data of a subject, where the functional imaging data includes at least the myocardium. A ROI encompassing at most the myocardium from the acquired functional imaging data, and diagnostic parameters relating to the myocardium are estimated and quantified based on the determined ROI. In one embodiment, the ROI is determined from a projection image representation utilizing histogram based thresholding and ray casting based localization to determine the extents of the ROI. In another embodiment, the ROI is determined from a volumetric image representation utilizing clustering Manhattan distance based cleaning to determine cardiac angles used for reorienting the left ventricle.
摘要翻译：公开了用于确定感兴趣心肌区域（ROI）的心脏成像方法。该方法包括获取对象的功能成像数据，其中功能成像数据至少包括心肌。基于所确定的ROI，估计和量化从所获得的功能成像数据中至多包含心肌的ROI和与心肌相关的诊断参数。在一个实施例中，ROI利用基于直方图的阈值和基于射线铸造的定位来确定ROI的范围的投影图像表示来确定。在另一个实施例中，利用基于曼哈顿距离的清洗的体积图像表示来确定ROI，以确定用于重新定向左心室的心脏角度。

8. 发明申请

US20140081132A1 MYOCARDIAL CLUSTERIFICATION AND ORIENTATION 有权
标题翻译： MYOCARDIAL CLUSTERIFICATION和ORIENTATION
公开(公告)号：US20140081132A1
公开(公告)日：2014-03-20
申请号：US14116352
申请日：2012-05-02
申请人： Shekhar Dwivedi
发明人： Shekhar Dwivedi
IPC分类号： G06T7/00 , A61B6/00 , A61B6/03
CPC分类号： G06T7/0012 , A61B6/037 , A61B6/503 , A61B6/507 , A61B6/5217 , A61B6/5223 , G06T7/11 , G06T2207/10104 , G06T2207/10108 , G06T2207/20044
摘要： A cardiac imaging method includes acquiring a projection image representation which includes a myocardium (S100). The myocardium is segmented and a mask is generated (S102). The mask is optimized (S104). A blood pool is determined from the optimized mask (S106) and the mask is skeletonized based on a clusterfication of the myocardial slices (S108). The center of mass is determined (S110) from the blood pool and the skeletonized mask. Myocardial parameters are determined (S112) from the skeletonized mask.
摘要翻译：心脏成像方法包括获取包括心肌的投影图像表示（S100）。将心肌分割并产生掩模（S102）。掩模被优化（S104）。从优化的掩模确定血液池（S106），并且基于心肌切片的聚类来掩蔽掩模（S108）。确定质心（S110）从血液池和骨架的掩模。从骨架化掩模确定心肌参数（S112）。

9. 发明授权

US09066707B2 Heart location and verification in emission images 有权
标题翻译：发射图像中的心脏位置和验证
公开(公告)号：US09066707B2
公开(公告)日：2015-06-30
申请号：US13817148
申请日：2011-07-18
申请人： Shekhar Dwivedi , Xiyun Song , Teimuraz Bandzava , Jinghan Ye , Satrajit Misra
发明人： Shekhar Dwivedi , Xiyun Song , Teimuraz Bandzava , Jinghan Ye , Satrajit Misra
IPC分类号： G06K9/00 , A61B6/00 , G06T11/00 , G06T7/20 , A61B5/0402 , A61B6/03 , G06K9/46
CPC分类号： A61B6/5288 , A61B5/0402 , A61B6/037 , A61B6/503 , A61B6/5264 , G06K9/46 , G06T7/254 , G06T11/005 , G06T2207/10108 , G06T2207/30048 , G06T2211/412
摘要： An apparatus comprises: an imaging system (10) configured to acquire emission data from a cyclically varying element; a monitoring instrument (20, 22) configured to measure the cyclical varying of the cyclically varying element; and an electronic device (40) configured to locate an image feature corresponding to the cyclically varying element in the acquired emission data based on correlation of time variation of the emission data with the cyclical varying of the cyclically varying element measured by the monitoring instrument. The located image feature may be verified by: thresholding a projection image generated from the emission data to generate a mask image; identifying in the mask image one of (i) a hollow circular feature, (ii) a hollow oval feature, (iii) a circular cavity feature, and (iv) an oval cavity feature; and verifying the located image feature based on whether the identifying operation is successful.
摘要翻译：一种装置包括：成像系统（10），被配置为从循环变化的元件获取发射数据; 被配置为测量循环变化元件的循环变化的监测仪器（20,22）以及电子设备（40），其被配置为基于所述发射数据的时间变化与由所述监测仪器测量的所述循环变化元件的周期性变化的相关性来定位所获取的发射数据中对应于所述循环变化元素的图像特征。定位的图像特征可以通过以下方式来验证：阈值化从发射数据产生的投影图像以生成掩模图像; 在掩模图像中识别（i）中空圆形特征，（ii）中空椭圆形特征，（iii）圆形空腔特征和（iv）椭圆形腔特征中的一个; 以及基于所述识别操作是否成功来验证所述定位图像特征。

10. 发明授权

US09760988B2 Myocardial clusterification and orientation 有权
公开(公告)号：US09760988B2
公开(公告)日：2017-09-12
申请号：US14116352
申请日：2012-05-02
申请人： Shekhar Dwivedi
发明人： Shekhar Dwivedi
IPC分类号： A61B6/00 , G06T7/00 , A61B6/03 , G06T7/11
CPC分类号： G06T7/0012 , A61B6/037 , A61B6/503 , A61B6/507 , A61B6/5217 , A61B6/5223 , G06T7/11 , G06T2207/10104 , G06T2207/10108 , G06T2207/20044
摘要： A cardiac imaging method includes acquiring a projection image representation which includes a myocardium (S100). The myocardium is segmented and a mask is generated (S102). The mask is optimized (S104). A blood pool is determined from the optimized mask (S106) and the mask is skeletonized based on a clusterfication of the myocardial slices (S108). The center of mass is determined (S110) from the blood pool and the skeletonized mask. Myocardial parameters are determined (S112) from the skeletonized mask.

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