公开(公告)号：US20070116172A1

公开(公告)日：2007-05-24

申请号：US11286924

申请日：2005-11-23

申请人： Jiang Hsieh ,  Darin Okerlund ,  Mark Woodford

发明人： Jiang Hsieh ,  Darin Okerlund ,  Mark Woodford

IPC分类号： A61B6/00 ,  G01N23/00 ,  G21K1/12 ,  H05G1/60

CPC分类号： G01N23/046 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4233 ,  A61B6/488 ,  A61B6/5264 ,  A61B6/541 ,  A61B6/583 ,  G01N2223/419 ,  G01N2223/612 ,  G01N2223/66

摘要： In one embodiment, a method is provided for performing computed tomography (CT) imaging. The method includes obtaining EKG gating information from an object and obtaining attenuation measurements from the object utilizing a detector that is rotated in a scan plane around the object. The method further includes performing a first reconstruction based on a first portion of the attenuation measurements that are collected by a first region of the detector, where the first reconstruction is performed independent of the EKG gating information to obtain a first reconstruction data set. A second reconstruction is performed based on a second port of the attenuation measurements that are collected by a second region of the detector, where the second reconstruction is performed based on the EKG gating information to obtain a second reconstruction data set.

公开(公告)号：US20070116171A1

公开(公告)日：2007-05-24

申请号：US11286899

申请日：2005-11-23

申请人： Jiang Hsieh ,  Darin Okerlund ,  Mark Woodford

发明人： Jiang Hsieh ,  Darin Okerlund ,  Mark Woodford

IPC分类号： A61B6/00 ,  G01N23/00 ,  G21K1/12 ,  H05G1/60

CPC分类号： A61B6/032 ,  A61B6/027 ,  A61B6/06 ,  A61B6/4085 ,  A61B6/466 ,  A61B6/488 ,  A61B6/503 ,  A61B6/5205 ,  A61B6/5264 ,  A61B6/541 ,  A61B6/583 ,  G06T11/005 ,  G06T2211/412

摘要： In one embodiment, a method is provided for performing computed tomography (CT) imaging. The method includes obtaining EKG gating information from an object and obtaining attenuation measurements from the object utilizing a detector that is rotated in a scan plane around the object. The method further includes performing a first reconstruction based on a first portion of the attenuation measurements that are collected by a first region of the detector, where the first reconstruction is performed independent of the EKG gating information to obtain a first reconstruction data set. A second reconstruction is performed based on a second port of the attenuation measurements that are collected by a second region of the detector, where the second reconstruction is performed based on the EKG gating information to obtain a second reconstruction data set.

摘要翻译： 在一个实施例中，提供了一种用于执行计算机断层摄影（CT）成像的方法。 该方法包括从对象获得EKG选通信息，并使用在围绕物体的扫描平面中旋转的检测器从对象获得衰减测量。 该方法还包括基于由检测器的第一区域收集的衰减测量的第一部分执行第一重建，其中执行第一重建独立于EKG门控信息以获得第一重建数据集。 基于由检测器的第二区域收集的衰减测量的第二端口执行第二重建，其中基于EKG门控信息执行第二重建以获得第二重构数据集。

公开(公告)号：US06873675B2

公开(公告)日：2005-03-29

申请号：US10323256

申请日：2002-12-18

申请人： Rajendra Kurady ,  Darin Okerlund ,  Mark Woodford ,  Edward Henry Chao

发明人： Rajendra Kurady ,  Darin Okerlund ,  Mark Woodford ,  Edward Henry Chao

IPC分类号： A61B6/00 ,  G06T11/00 ,  G21K1/12 ,  G01N23/00

CPC分类号： G06T11/005 ,  A61B6/032 ,  A61B6/503 ,  A61B6/541 ,  A61B8/5284 ,  G06T2211/412 ,  Y10S378/901

摘要： A multi-sector back-off logic algorithm for obtaining optimal slice-sensitive computed tomography (“CT”) profiles. The systems and methods of the present invention improving the temporal resolution of a CT system by checking for Z location errors between sectors and automatically backing-off to an alternative multi-sector algorithm when necessary (i.e., selecting an optimized maximum number of sectors to reconstruct), providing less Z location error. Based upon this Z location error, the systems and methods of the present invention also calculating the maximum number of sectors that should be used for reconstruction “on-the-fly” (i.e., on a per image basis across an entire series of images). These systems and methods utilizing the Recommended Protocol for Cardiac Reconstruction Algorithms.

摘要翻译： 用于获得最佳切片敏感计算机断层扫描（“CT”）轮廓的多扇区退避逻辑算法。 本发明的系统和方法通过检查扇区之间的Z位置误差来提高CT系统的时间分辨率，并且在必要时自动地退回到替代的多扇区算法（即，选择优化的最大数量的扇区以重建 ），提供较少的Z位置错误。 基于该Z位置错误，本发明的系统和方法还计算应该用于“即时”重建的扇区的最大数量（即，跨整个图像的每个图像） 。 这些系统和方法利用推荐的心脏重建算法协议。

公开(公告)号：US06256368B1

公开(公告)日：2001-07-03

申请号：US09419191

申请日：1999-10-15

申请人： Jiang Hsieh ,  Mark Woodford

发明人： Jiang Hsieh ,  Mark Woodford

IPC分类号： G01N2300

CPC分类号： A61B6/488 ,  A61B6/032 ,  A61B6/503 ,  A61B6/541

摘要： In one aspect, the present invention is a method for producing CT images of a patient's heart suitable for calcification scoring, in which the heart has a cardiac cycle. The method includes steps of acquiring data representative of a first scout-scanned CT image of physical locations of the patient's body including at least a portion of the patient's heart at phases &phgr;1(L) of the cardiac cycle, acquiring data representative of a second scout-scanned CT image of the physical locations of the patient's body including at least a portion of the patient's heart at phases &phgr;2(L) of the cardiac cycle different from &phgr;1(L) at physical positions L of interest, and determining a difference image from the acquired data representative of the first scout-scanned CT image and the acquired data representative of the second scout-scanned CT image data. It is not necessary that &phgr;1(L) and &phgr;2(L) be constant as a function of position L.

摘要翻译： 一方面，本发明是一种用于产生适于钙化评分的患者心脏的CT图像的方法，其中心脏具有心动周期。 该方法包括以下步骤：获取表示患者身体的物理位置的第一侦察扫描CT图像的数据的步骤，该数据包括心动周期相位ph1（L）处的患者心脏的至少一部分，获取表示第二侦察器 包括患者心脏的物理位置的扫描CT图像，其包括在感兴趣的物理位置L处与心脏周期不同于phi1（L）的相位phi2（L）处的患者心脏的至少一部分，并且确定来自 代表第一侦察扫描CT图像的获取数据和表示第二侦察扫描CT图像数据的获取数据。 作为位置L的函数，phi1（L）和phi2（L）不是必须的。

公开(公告)号：US06597803B1

公开(公告)日：2003-07-22

申请号：US09429867

申请日：1999-10-29

申请人： Tin-Su Pan ,  Mark Woodford ,  Jiang Hsieh ,  Yun Shen ,  Kishore Acharya

发明人： Tin-Su Pan ,  Mark Woodford ,  Jiang Hsieh ,  Yun Shen ,  Kishore Acharya

IPC分类号： G06K900

CPC分类号： A61B6/541 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4085 ,  Y10S378/901

摘要： In one aspect, the present invention is a method for scanning an object with a multi-slice CT imaging system having multiple detector rows each having an isocenter. The method includes steps of helically scanning an object with the multi-slice CT imaging system to obtain data segments including peripheral data segments, combining data from a first peripheral data segment with an opposite, second peripheral segment to form a data set for reconstruction of an image slice; and reconstructing the combined data into image slices.

摘要翻译： 一方面，本发明是一种用多层CT成像系统扫描物体的方法，该多层CT成像系统具有各自具有等角点的多个检测器行。 该方法包括用多层CT成像系统螺旋扫描物体以获得包括外围数据段的数据段的步骤，将来自第一外围数据段与相对的第二外围段的数据组合以形成数据集，以重建 图像片; 并将组合数据重构成图像片段。