公开(公告)号：US07768261B2

公开(公告)日：2010-08-03

申请号：US12109605

申请日：2008-04-25

申请人： Rainer Paul ,  Matthias J. Schmand ,  Charles H. Hayden, Jr. ,  James Corbeil ,  Christian J. Michel ,  Ziad Burbar ,  Volker Matschl

发明人： Rainer Paul ,  Matthias J. Schmand ,  Charles H. Hayden, Jr. ,  James Corbeil ,  Christian J. Michel ,  Ziad Burbar ,  Volker Matschl

IPC分类号： G01V3/00

CPC分类号： G01R33/481 ,  A61B6/037 ,  A61B6/583 ,  G01R33/58 ,  G01T1/1603

摘要： A phantom and method are provided for co-registering a magnetic resonance image and a nuclear medical image. The phantom includes a first housing defining a first chamber configured to receive a magnetic resonance material upon which magnetic resonance imaging can be performed in order to produce the magnetic resonance image. The phantom also includes three or more second housings configured to be attached to the first housing, where the second housings each define a second chamber configured to receive a radioactive material upon which nuclear imaging can be performed in order to produce the nuclear medical image and upon which the magnetic imaging can be performed in order to produce the magnetic resonance image. The first chamber has a volumetric capacity that is larger than a volumetric capacity of each second chamber.

摘要翻译： 提供了用于共同配准磁共振图像和核医学图像的体模和方法。 幻影包括限定第一室的第一壳体，其被配置为接收磁共振材料，在该共振材料上可进行磁共振成像以产生磁共振图像。 该幻影还包括构造成附接到第一壳体的三个或更多个第二壳体，其中第二壳体每个限定第二室，所述第二室被构造成接收放射性材料，在该第二室上可以执行核成像以产生核医学图像， 可以进行磁性成像以产生磁共振图像。 第一室具有大于每个第二室的容积的容积。

公开(公告)号：US20080269594A1

公开(公告)日：2008-10-30

申请号：US12109605

申请日：2008-04-25

申请人： Rainer Paul ,  Matthias J. Schmand ,  Charles H. Hayden ,  James Corbeil ,  Christian J. Michel ,  Ziad Burbar ,  Volker Matschl

发明人： Rainer Paul ,  Matthias J. Schmand ,  Charles H. Hayden ,  James Corbeil ,  Christian J. Michel ,  Ziad Burbar ,  Volker Matschl

IPC分类号： A61B5/055 ,  A61B6/00

CPC分类号： G01R33/481 ,  A61B6/037 ,  A61B6/583 ,  G01R33/58 ,  G01T1/1603

摘要： A phantom and method are provided for co-registering a magnetic resonance image and a nuclear medical image. The phantom includes a first housing defining a first chamber configured to receive a magnetic resonance material upon which magnetic resonance imaging can be performed in order to produce the magnetic resonance image. The phantom also includes three or more second housings configured to be attached to the first housing, where the second housings each define a second chamber configured to receive a radioactive material upon which nuclear imaging can be performed in order to produce the nuclear medical image and upon which the magnetic imaging can be performed in order to produce the magnetic resonance image. The first chamber has a volumetric capacity that is larger than a volumetric capacity of each second chamber.

摘要翻译： 提供了用于共同配准磁共振图像和核医学图像的体模和方法。 幻影包括限定第一室的第一壳体，其被配置为接收磁共振材料，在该共振材料上可进行磁共振成像以产生磁共振图像。 该幻影还包括构造成附接到第一壳体的三个或更多个第二壳体，其中第二壳体每个限定第二室，所述第二室被构造成接收放射性材料，在该第二室上可以执行核成像以产生核医学图像， 可以进行磁性成像以产生磁共振图像。 第一室具有大于每个第二室的容积的容积。

公开(公告)号：US20120155736A1

公开(公告)日：2012-06-21

申请号：US13400322

申请日：2012-02-20

申请人： David D. Faul ,  Christian J. Michel

发明人： David D. Faul ,  Christian J. Michel

IPC分类号： G06K9/00

CPC分类号： A61B6/032 ,  A61B6/037 ,  A61B6/5235 ,  A61B6/5241 ,  G06T11/008

摘要： An apparatus and method for expanding the FOV of a truncated computed tomography (CT) scan. An iterative calculation is performed on the original CT image to produce an estimate of the image. The calculated estimate of the reconstructed image includes the original image center and a estimate of the truncated portion outside the image center. The calculation uses an image mask with the image center as one boundary.

摘要翻译： 一种用于扩展截断计算机断层摄影（CT）扫描的FOV的装置和方法。 对原始CT图像进行迭代计算以产生图像的估计。 所计算的重建图像的估计包括原始图像中心和图像中心外的截断部分的估计。 该计算使用图像中心作为一个边界的图像蒙版。

公开(公告)号：US20120148138A1

公开(公告)日：2012-06-14

申请号：US13400314

申请日：2012-02-20

申请人： David D. Faul ,  Christian J. Michel

发明人： David D. Faul ,  Christian J. Michel

IPC分类号： G06K9/00

CPC分类号： A61B6/032 ,  A61B6/037 ,  A61B6/5235 ,  A61B6/5241 ,  G06T11/008

摘要： An apparatus and method for expanding the FOV of a truncated computed tomography (CT) scan. An iterative calculation is performed on the original CT image to produce an estimate of the image. The calculated estimate of the reconstructed image includes the original image center and a estimate of the truncated portion outside the image center. The calculation uses an image mask with the image center as one boundary.

公开(公告)号：US20100074501A1

公开(公告)日：2010-03-25

申请号：US12564685

申请日：2009-09-22

申请人： Ralf Ladebeck ,  Christian J. Michel ,  Charles C. Watson

发明人： Ralf Ladebeck ,  Christian J. Michel ,  Charles C. Watson

IPC分类号： G06K9/00 ,  G06F7/60

CPC分类号： G01R33/481

摘要： A method for co-registering attenuation data of MR coils in a MR/PET imaging system with PET emission data includes computing a likelihood of PET emission data on a grid in a parameter space based on an algorithm, wherein the algorithm defines L(λ, μbody, μcoils{p}) as a log-likelihood of measured PET data, where λ is an emitter distribution (image), μbody is a known linear attenuation coefficient (LAC) distribution of the body from MRI, μcoils is a linear attenuation coefficient map of MRI coils, and {p} is a set of parameters governing the position of each coil, wherein if μcoils is assumed, then λ can be reconstructed and forward projected and L can be computed. The method includes adjusting the estimated position of the MR coils to maximize the likelihood of emission data based on the computed L.

摘要翻译： 在具有PET发射数据的MR / PET成像系统中共同记录MR线圈的衰减数据的方法包括基于算法计算参数空间中的网格上的PET发射数据的可能性，其中所述算法定义L（λ， μbody，μcoils{p}）作为测量PET数据的对数似然度，其中λ是发射体分布（图像），μbody是来自MRI的身体的已知线性衰减系数（LAC）分布，μ线圈是线性衰减系数 MRI线圈图，{p}是控制每个线圈位置的一组参数，其中如果假设为μcoils，则可以重建λ并且向前投影，并且可以计算L。 该方法包括调整MR线圈的估计位置，以使基于计算出的L的发射数据的可能性最大化。

公开(公告)号：US08620053B2

公开(公告)日：2013-12-31

申请号：US12939701

申请日：2010-11-04

申请人： Christian J. Michel ,  Johan Nuyts

发明人： Christian J. Michel ,  Johan Nuyts

IPC分类号： G06K9/00

CPC分类号： G06T11/005 ,  G06T2211/432

摘要： The present invention is a method of generating a best estimate of an image attenuation map derived from a truncated image attenuation map and PET emissions data for the object being imaged by a morphological imaging modality. The method involves a plurality of steps beginning with the recordation and processing of PET emissions data. Next, the morphological imaging modality records image data which is processed to determine an attenuation map. The attenuation map, for image modalities such as CT and MR scanning systems integrated with PET, is truncated, resulting in a truncated attenuation map image. Pixels for which attenuation data needs to be determined are identified and attenuation coefficients for these pixels are estimated and combined with the truncated attenuation map to generate a full initial attenuation map for the image, which is iteratively processed together with the PET emission data until the improvement change in the emission image reaches a defined threshold improvement level.

摘要翻译： 本发明是一种通过截面图像衰减图导出的图像衰减图的最佳估计和通过形态成像模态成像的对象的PET发射数据的方法。 该方法涉及从记录和处理PET发射数据开始的多个步骤。 接下来，形态学成像模式记录被处理以确定衰减图的图像数据。 对于与PET集成的CT和MR扫描系统的图像模态的衰减图被截断，导致截断的衰减图图像。 识别需要确定衰减数据的像素，并估计这些像素的衰减系数并与截断的衰减图组合，以生成图像的完整初始衰减图，该图再次与PET发射数据一起处理，直到改进 发射图像的变化达到定义的阈值提高水平。

公开(公告)号：US08478015B2

公开(公告)日：2013-07-02

申请号：US13400322

申请日：2012-02-20

申请人： David Faul ,  Christian J. Michel

发明人： David Faul ,  Christian J. Michel

IPC分类号： G06K9/00 ,  A61B6/00

CPC分类号： A61B6/032 ,  A61B6/037 ,  A61B6/5235 ,  A61B6/5241 ,  G06T11/008

摘要： An apparatus and method for expanding the FOV of a truncated computed tomography (CT) scan. An iterative calculation is performed on the original CT image to produce an estimate of the image. The calculated estimate of the reconstructed image includes the original image center and a estimate of the truncated portion outside the image center. The calculation uses an image mask with the image center as one boundary.

摘要翻译： 一种用于扩展截断计算机断层摄影（CT）扫描的FOV的装置和方法。 对原始CT图像进行迭代计算以产生图像的估计。 所计算的重建图像的估计包括原始图像中心和图像中心外的截断部分的估计。 该计算使用图像中心作为一个边界的图像蒙版。

公开(公告)号：US20130058551A1

公开(公告)日：2013-03-07

申请号：US13223527

申请日：2011-09-01

申请人： Inki Hong ,  Michael E. Casey ,  Christian J. Michel

发明人： Inki Hong ,  Michael E. Casey ,  Christian J. Michel

IPC分类号： G06K9/00

CPC分类号： G06T11/006 ,  G06T2211/412

摘要： Using complementary reconstruction, images from short time frames may be generated for positron emission tomography. Detected events are gathered over a long period, such as three minutes. The detected events from a short period, such as one or two seconds, are removed. Reconstruction is performed on the detected events from the long period and another reconstruction is performed on the detected events from the long period without the detected events from the short period. The second reconstruction is subtracted from the first, providing data representing the short period. The data may result in better image quality than merely reconstructing an individual frame for the short period.

摘要翻译： 使用互补重建，可以为正电子发射断层扫描生成来自短时间帧的图像。 检测到的事件是长时间收集的，例如三分钟。 从短时间（例如一秒或两秒）中检测到的事件将被删除。 对长时间的检测到的事件进行重建，并且对于长时间的检测到的事件进行另一重建，而没有从短周期检测到的事件。 从第一次减去第二个重建，提供表示短周期的数据。 数据可能会导致更好的图像质量，而不仅仅是在短时间内重建单个帧。

公开(公告)号：US07856129B2

公开(公告)日：2010-12-21

申请号：US11716359

申请日：2007-03-09

申请人： Vladimir Panin ,  Frank Kehren ,  Christian J. Michel

发明人： Vladimir Panin ,  Frank Kehren ,  Christian J. Michel

IPC分类号： G06K9/00

CPC分类号： G06T11/005 ,  A61B6/037

摘要： A method for interpolating at least one oblique line of response ray representing nuclear image projection data through a rectangular volume and a system for using the method. The method consists of steps of interpolating all the direct rays in a rectangular volume, making a projected ray by projecting the oblique ray onto a surface of the rectangular volume, matching the projected ray to a coinciding interpolated direct ray, shearing the rectangular volume to match the projected ray, and interpolating the oblique ray in the sheared volume.

摘要翻译： 一种用于内插通过矩形体积表示核图像投影数据的响应光线的至少一条斜线和用于使用该方法的系统的方法。 该方法包括将所有直射光线插入矩形体积中的步骤，通过将倾斜射线投射到矩形体积的表面上，将投射光线匹配成符合插值的直接射线，将矩形体积剪切成匹配 投射光线，并将剪切光线插入剪切体积。

公开(公告)号：US08577114B2

公开(公告)日：2013-11-05

申请号：US13400314

申请日：2012-02-20

申请人： David Faul ,  Christian J. Michel

发明人： David Faul ,  Christian J. Michel

IPC分类号： G06K9/00

CPC分类号： A61B6/032 ,  A61B6/037 ,  A61B6/5235 ,  A61B6/5241 ,  G06T11/008

摘要： An apparatus and method for expanding the FOV of a truncated computed tomography (CT) scan. An iterative calculation is performed on the original CT image to produce an estimate of the image. The calculated estimate of the reconstructed image includes the original image center and a estimate of the truncated portion outside the image center. The calculation uses an image mask with the image center as one boundary.