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1. 发明授权

US08526691B2 System and method for passive medical device navigation under real-time MRI guidance 有权
标题翻译：实时MRI指导下被动医疗器械导航的系统和方法
公开(公告)号：US08526691B2
公开(公告)日：2013-09-03
申请号：US13150384
申请日：2011-06-01
申请人： Wilhelm Strehl , Wesley D. Gilson , Eva Rothgang
发明人： Wilhelm Strehl , Wesley D. Gilson , Eva Rothgang
IPC分类号： G06K9/00 , G06K9/40
CPC分类号： A61B34/20 , A61B2034/2065 , A61B2090/374 , G01R33/286
摘要： A method for tracking a needle along a path under real-time magnetic resonance imaging (MRI) guidance includes extracting a candidate needle artifact region from a plurality of incoming MR images of a needle inside biological tissue, determining an initial needle direction vector from the candidate needle artifact region in each of the plurality of incoming needle images, determining an initial needle base point from an intersection of the needle direction vector with a first incoming needle image, and an initial needle tip point from an intersection of the needle direction vector with a last incoming needle image, and tracking said needle by minimizing a cost function of the initial base point and initial direction vector to calculate an updated base point and updated direction vector. The updated base point and direction vector are used to visualize the advance of the needle along the path through the biological tissue.
摘要翻译：用于在实时磁共振成像（MRI）指导下沿着路径跟踪针的方法包括从生物组织内的针的多个入射MR图像中提取候选针刺伪影区域，从候选者确定初始针向量矢量在多个进针图像中的每一个中的针刺伪影区域，从针方向矢量与第一入射针图像的交点确定初始针基点，以及从针方向矢量与并且通过最小化初始基点和初始方向向量的成本函数来计算更新的基点和更新的方向向量来跟踪所述针。更新的基点和方向向量用于沿着穿过生物组织的路径可视化针的前进。

2. 发明申请

US20120089008A1 SYSTEM AND METHOD FOR PASSIVE MEDICAL DEVICE NAVIGATION UNDER REAL-TIME MRI GUIDANCE 有权
标题翻译：实时MRI指导下被动式医疗器械导航的系统与方法
公开(公告)号：US20120089008A1
公开(公告)日：2012-04-12
申请号：US13150384
申请日：2011-06-01
申请人： Wilhelm Strehl , Wesley D. Gilson , Eva Rothgang
发明人： Wilhelm Strehl , Wesley D. Gilson , Eva Rothgang
IPC分类号： A61B5/055
CPC分类号： A61B34/20 , A61B2034/2065 , A61B2090/374 , G01R33/286
摘要： A method for tracking a needle along a path under real-time magnetic resonance imaging (MRI) guidance includes extracting a candidate needle artifact region from a plurality of incoming MR images of a needle inside biological tissue, determining an initial needle direction vector from the candidate needle artifact region in each of the plurality of incoming needle images, determining an initial needle base point from an intersection of the needle direction vector with a first incoming needle image, and an initial needle tip point from an intersection of the needle direction vector with a last incoming needle image, and tracking said needle by minimizing a cost function of the initial base point and initial direction vector to calculate an updated base point and updated direction vector. The updated base point and direction vector are used to visualize the advance of the needle along the path through the biological tissue.
摘要翻译：用于在实时磁共振成像（MRI）指导下沿着路径跟踪针的方法包括从生物组织内的针的多个入射MR图像中提取候选针刺伪影区域，从候选者确定初始针向量矢量在多个进针图像中的每一个中的针刺伪影区域，从针方向矢量与第一入射针图像的交点确定初始针基点，以及从针方向矢量与并且通过最小化初始基点和初始方向向量的成本函数来计算更新的基点和更新的方向向量来跟踪所述针。更新的基点和方向向量用于沿着穿过生物组织的路径可视化针的前进。

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