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1. 发明授权

US5734384A Cross-referenced sectioning and reprojection of diagnostic image volumes 失效
标题翻译：诊断图像体积的交叉参考切片和重新投影
公开(公告)号：US5734384A
公开(公告)日：1998-03-31
申请号：US729314
申请日：1996-10-15
申请人： Jeffrey H. Yanof , Dominic J. Heuscher
发明人： Jeffrey H. Yanof , Dominic J. Heuscher
IPC分类号： G06T17/10 , G06T17/40
CPC分类号： G06T17/10
摘要： A CT scanner non-invasively examines a volumetric region and generates voxel values. A user adjustable 3D axis system defines mutually orthogonal sections and volume reprojections thus defining a cross reference relation between them. An affine transform translates and rotates the axis system from object space to image space whereby each axis defines the orientation of origin intersecting sections in one view port and the viewing direction of volume reprojections in another view port. An operator console selects an angular orientation of the coordinate axis. A cursor position designates coordinates in image space causing the cursor, typically crossed axes, to be displayed on a monitor at a corresponding location in each displayed image. The view port rotation and translation of the projected crossed cursors are reverse affine transformed to rotate and translate the axis system. While viewing and cross referencing the polyhedral volume reprojection, the cursor selects points along a curved object which are interpolated into a smooth curve to define curved section images. Multiple projection views define the medial axis within a straight or curved tubular structure. The medial axis generates transverse and longitudinal medial sections and sets of volume reprojections cross referenced to the projection views to generate the medial axis for side by side or fly through display.
摘要翻译： CT扫描仪非侵入性地检查体积区域并产生体素值。用户可调节的3D轴系统定义相互正交的部分和体积重映射，从而定义它们之间的交叉参考关系。仿射变换将轴系统从对象空间转换为图像空间，从而每个轴定义一个视图端口中原点相交部分的方向和另一个视图端口中卷重播的观察方向。操作员控制台选择坐标轴的角度方向。光标位置指定导致光标（通常是交叉轴）的图像空间中的坐标，以显示在每个显示图像中相应位置的监视器上。投影交叉光标的视口旋转和平移是反向仿射变换以旋转和平移轴系。在查看和交叉引用多面体体重映射时，光标选择沿着曲线对象的点，这些点被插值为平滑曲线以定义弯曲部分图像。多个突出视图将直线或弯曲管状结构内的中间轴定义。中间轴产生横向和纵向中间部分以及与投影视图交叉参考的体积重复组，以生成并列显示的中间轴或通过显示。

2. 发明授权

US6149592A Integrated fluoroscopic projection image data, volumetric image data, and surgical device position data 失效
标题翻译：集成荧光投影图像数据，体积图像数据和手术装置位置数据
公开(公告)号：US6149592A
公开(公告)日：2000-11-21
申请号：US980171
申请日：1997-11-26
申请人： Jeffrey H. Yanof , Pieter Gerhard Roos , Kenneth L. Freeman , Joseph S. Deucher , Andrew J. Ivan , Dominic J. Heuscher
发明人： Jeffrey H. Yanof , Pieter Gerhard Roos , Kenneth L. Freeman , Joseph S. Deucher , Andrew J. Ivan , Dominic J. Heuscher
IPC分类号： G01B15/00 , A61B6/03 , A61B6/12 , A61B19/00 , G06T1/00 , H04N7/18 , A61B5/00
CPC分类号： A61B90/36 , A61B6/027 , A61B6/584
摘要： A patient supported on a patient support (12) is moved into a bore (22) of a planning imaging device, such as a CT scanner (20). A three-dimensional diagnostic image in three-dimensional diagnostic image space is generated and stored in a memory (130). The patient is repositioned outside of the bore with a region of interest in alignment with a real time imaging device, such as a fluoroscopic imaging device (40). A surgical planning instrument (60), such as a pointer or biopsy needle (62), is mounted on an articulated arm (64). As the instrument is inserted into the region of interest, fluoroscopic images are generated and stored in a memory (140). The coordinate systems of the CT scanner, the fluoroscopic device, and the surgical instrument are correlated (102, 104, 112, 120) such that the instrument is displayed on both the CT images (134) and the fluoroscopic images (50), such that cursors move concurrently along the fluoroscopic and CT images, and the like. In a preferred embodiment in which the cursor on the CT image display is at an intersection of transverse, sagittal, and coronal planes, the displayed planes change as the cursor moves coordinating the displayed CT image planes with the position of the cursor on the fluoroscopic image.
摘要翻译：支撑在患者支架（12）上的患者被移动到诸如CT扫描器（20）的规划成像装置的孔（22）中。生成三维诊断图像空间中的三维诊断图像并将其存储在存储器（130）中。将患者重新定位在具有与实时成像装置（例如透视成像装置（40））对准的感兴趣区域的孔外。诸如指针或活检针（62）的手术计划仪器（60）安装在关节臂（64）上。当仪器被插入到感兴趣的区域中时，产生荧光图像并将其存储在存储器（140）中。 CT扫描仪，荧光检查装置和手术器械的坐标系相关（102,104,112,120），使得仪器显示在CT图像（134）和透视图像（50）两者上该光标沿荧光镜和CT图像同时移动等。在CT图像显示器上的光标位于横向，矢状和冠状平面的交叉处的优选实施例中，随着光标移动，显示的平面随着光标在荧光镜图像上的位置协调所显示的CT图像平面而变化。

3. 发明申请

US20090185656A1 CONE-BEAM CT HALF-CYCLE CLOSED HELICAL TRAJECTORY 审中-公开
公开(公告)号：US20090185656A1
公开(公告)日：2009-07-23
申请号：US12302091
申请日：2007-05-09
申请人： Dominic J. Heuscher
发明人： Dominic J. Heuscher
IPC分类号： A61B6/00
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4028
摘要： A tomographic apparatus (10) includes radiation source (20), at least one radiation sensitive detector (30), and a reconstruction system (40). The radiation source (20) sweeps along a z-axis (16) and returns to its initial position in coordination with about two revolutions of the radiation source (20) about an imaging region (32) with a frequency of about half a frequency of a revolution of the radiation source (20) about the imaging region (32). The at least one radiation sensitive detector (30) detects radiation emitted by the radiation source (20) that traverses a volume of interest (52) within the imaging region (32) and generates data indicative of the detected radiation. The reconstruction system (40) reconstructs the detected data to generate an image of a subject in the volume of interest (52).
摘要翻译：断层摄影装置（10）包括辐射源（20），至少一个辐射敏感探测器（30）和重建系统（40）。辐射源（20）沿着z轴（16）扫掠并且以关于成像区域（32）的大约两倍的频率的频率的大约两倍的频率的辐射源（20）的约两圈的协调返回到其初始位置关于成像区域（32）的辐射源（20）的旋转。所述至少一个辐射敏感检测器（30）检测辐射源（20）发射的穿过成像区域（32）内的感兴趣体积（52）的辐射，并产生指示检测到的辐射的数据。重建系统（40）重建检测到的数据以产生感兴趣体积中的对象的图像（52）。

4. 发明授权

US07324623B2 Computed tomography scanner with large gantry bore 有权
标题翻译：具有大龙门架的计算机断层扫描仪
公开(公告)号：US07324623B2
公开(公告)日：2008-01-29
申请号：US10564715
申请日：2004-07-12
申请人： Dominic J. Heuscher
发明人： Dominic J. Heuscher
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4014 , A61B6/4291 , A61B6/482 , G01N23/04
摘要： A computed tomography scanner includes a rotating gantry (20) defining an examination region (16). A first radiation source (22) is disposed on the rotating gantry (20) and emits first radiation (32) into the examination region (16). A second radiation source (24) is disposed on the rotating gantry (20) and emits second radiation (36) into the examination region (16). The second radiation source (24) is angularly spaced around the gantry from the first radiation source (22). A first radiation detector (30, 30′) receives the first radiation (32). A center of the first radiation detector (30, 30′) is angularly spaced around the gantry from the first radiation source (22) by less than 180°. A second radiation detector (34) receives the second radiation (36). A center of the second radiation detector (34) is angularly spaced around the gantry from the second radiation source (24) by less than 180°.
摘要翻译：计算机断层摄影扫描器包括限定检查区域（16）的旋转台架（20）。第一辐射源（22）设置在旋转台架（20）上并且将第一辐射（32）发射到检查区域（16）中。第二辐射源（24）设置在旋转台架（20）上并将第二辐射（36）发射到检查区域（16）中。第二辐射源（24）围绕台架与第一辐射源（22）成角度地间隔开。第一辐射检测器（30,30'）接收第一辐射（32）。第一辐射检测器（30,30'）的中心围绕台架与第一辐射源（22）成角度地间隔小于180°。第二辐射检测器（34）接收第二辐射（36）。第二辐射检测器（34）的中心围绕机架与第二辐射源（24）成角度地间隔小于180°。

5. 发明授权

US06574298B2 Cone beam scanner using oblique surface reconstructions 失效
标题翻译：锥形束扫描器采用斜面重构
公开(公告)号：US06574298B2
公开(公告)日：2003-06-03
申请号：US10054596
申请日：2002-01-22
申请人： Dominic J. Heuscher
发明人： Dominic J. Heuscher
IPC分类号： A61B603
CPC分类号： G06T11/006 , A61B6/027 , Y10S378/901
摘要： Data collected from a cone beam scanner is reconstructed into a volumetric image representation by defining a plurality of oblique surfaces which are reconstructed into a cylinder. An interpolator identifies non-redundant rays of radiation passing through the surfaces. Rays of radiation intersecting a center point of each oblique surface are identified along with rays tangent to surface rings on each surface. Data from the identified non-redundant rays is weighted by a first processor. A second processor convolves the weighted data and passes it to a backprojector which backprojects it into an image memory. The oblique surface reconstruction technique facilitates use of conventional two-dimensional convolution and backprojection techniques that enjoy relative computational simplicity and efficiency as well as three-dimensional reconstruction techniques that use a minimum number of projections. Additionally, the technique facilitates accurate reconstruction of cone beam projections with over ten times the area of current multi-ring scanners.
摘要翻译：从锥形束扫描器收集的数据通过限定多个被重建成圆柱体的倾斜表面而被重建成体积图像表示。内插器识别穿过表面的非冗余的辐射光线。与每个倾斜表面的中心点相交的辐射光线与每个表面上与表面环相切的光线被识别。来自所识别的非冗余光线的数据由第一处理器加权。第二处理器卷积加权数据并将其传递给背投影机，后投影机将其投影到图像存储器中。倾斜表面重建技术有利于使用常规的二维卷积和反投影技术，其享有相对计算的简单性和效率以及使用最少数量的投影的三维重建技术。此外，该技术有助于锥形束投影的精确重建，具有超过当前多环形扫描仪面积的十倍以上。

6. 发明授权

US6163617A Backprojection with a multi-color rendering engine 失效
标题翻译：使用多色渲染引擎进行反投影
公开(公告)号：US6163617A
公开(公告)日：2000-12-19
申请号：US193826
申请日：1998-11-17
申请人： Dominic J. Heuscher , David D. Matthews
发明人： Dominic J. Heuscher , David D. Matthews
IPC分类号： H04N7/18 , A61B6/03 , G06T1/00 , G06T11/00 , G06K9/00
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/421
摘要： A method of diagnostic image reconstruction from projection data is provided. It includes generating projection data followed by a convolution of the same. The convolved projection data is then scaled into unsigned, fixed precision words of a predetermined number of bits. The words are then split into a predetermined number of color channels corresponding to color channels of a multi-color rendering engine (150). Simultaneously and independently, the split words are backprojected along each of the color channels to obtain backprojected views for each color channel. The backprojected views for each color channel are accumulated to produce separate color images corresponding to each color channel. Finally, the separate color images are recombined to produce an output image. In a preferred embodiment, prior to the convolution of the projection data, a rebinning operation is performed to ensure that the projection data is in a parallel format. In addition, after convolving the projection data, a selective pre-interpolating step of linear or higher order is optionally performed on the projection data.
摘要翻译：提供了一种从投影数据进行诊断图像重建的方法。它包括产生投影数据，随后是卷积。然后将卷积的投影数据缩放成预定位数的无符号固定精度字。然后将这些单词分割成与多色渲染引擎（150）的颜色通道对应的预定数量的颜色通道。同时独立地，分割词沿着每个颜色通道反向投影，以获得每个颜色通道的反投影视图。累积每个颜色通道的反投影视图以产生对应于每个颜色通道的分开的彩色图像。最后，分离的彩色图像被重组以产生输出图像。在优选实施例中，在投影数据的卷积之前，执行重新归类操作以确保投影数据是并行格式。此外，在卷积投影数据之后，可选地对投影数据执行线性或更高阶的选择性预插值步骤。

7. 发明授权

US08897413B2 Dynamic adjustable source collimation during fly-by scanning 有权
标题翻译：动态可调源扫描期间的准直
公开(公告)号：US08897413B2
公开(公告)日：2014-11-25
申请号：US12991712
申请日：2009-05-13
申请人： Dominic J. Heuscher
发明人： Dominic J. Heuscher
IPC分类号： A61B6/03 , A61B6/06 , A61B6/00 , A61B6/02
CPC分类号： A61B6/032 , A61B6/027 , A61B6/035 , A61B6/06 , A61B6/4085 , A61B6/4476 , A61B6/466 , A61B6/503 , A61B6/542
摘要： A medical imaging system (100) includes a radiation source (112) that rotates around an examination region about a longitudinal axis and emits radiation while translating in a direction of the longitudinal axis during a fly-by scan. A source collimator (114) collimates the emitted radiation during the fly-by scan to form a generally conical shaped radiation beam that traverses the examination region. The source collimator (114) dynamically varies collimation during the scan so as to increase and decrease a width of the radiation beam in the longitudinal axis direction during the scan. A detector array (122) detects radiation that traverses the examination region and generates signals indicative thereof. A reconstructor (126) reconstructs the signals to generate volumetric image data indicative of the examination region.
摘要翻译：医疗成像系统（100）包括辐射源（112），辐射源围绕纵向轴线的检查区域旋转，并且在飞行扫描期间沿纵向轴线的方向发射辐射。源准直器（114）在飞越扫描期间校准所发射的辐射，以形成穿过检查区域的大致圆锥形的辐射束。源准直器（114）在扫描期间动态地改变准直，以便在扫描期间增加和减小辐射束在纵向轴线方向上的宽度。检测器阵列（122）检测穿过检查区域并产生指示其的信号的辐射。重建器（126）重建信号以产生指示检查区域的体积图像数据。

8. 发明授权

US08467494B2 Cone beam z-axis coverage 有权
标题翻译：锥形束z轴覆盖
公开(公告)号：US08467494B2
公开(公告)日：2013-06-18
申请号：US13127241
申请日：2009-10-28
申请人： Kevin M. Brown , Dominic J. Heuscher
发明人： Kevin M. Brown , Dominic J. Heuscher
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/4021 , A61B6/4085 , A61B6/5258 , A61B6/5282
摘要： An imaging system includes a radiation source (110) with an anode (202). The radiation source (110) rotates around an examination region (106) about a longitudinal axis (108) and emits radiation from a focal spot (206) on the anode (202). A source collimator (112) collimates the emitted radiation to produce a generally conically shaped radiation beam that traverses the examination region. The generally conically shaped radiation beam has an extended cone angle along the longitudinal axis that is greater than an effective maximum cone angle determined by an anode angle of the anode (202). A detector array (116) detects radiation that traverses the examination region and generates signals indicative thereof. A reconstructor (118) reconstructs the signals to generate volumetric image data indicative of the examination region.
摘要翻译：成像系统包括具有阳极（202）的辐射源（110）。辐射源（110）围绕纵向轴线（108）围绕检查区域（106）旋转，并且从阳极（202）上的焦点（206）发射辐射。源准直器（112）准直所发射的辐射以产生穿过检查区域的大致圆锥形的辐射束。大致圆锥形的辐射束沿着纵向轴线具有大于由阳极（202）的阳极角度确定的有效最大锥角的扩展锥角。检测器阵列（116）检测穿过检查区域的辐射并产生指示其的信号。重建器（118）重建信号以产生指示检查区域的体积图像数据。

9. 发明申请

US20110058645A1 DYNAMIC ADJUSTABLE SOURCE COLLIMATION DURING FLY-BY SCANNING 有权
标题翻译：动态扫描期间的动态可调源数据收集
公开(公告)号：US20110058645A1
公开(公告)日：2011-03-10
申请号：US12991712
申请日：2009-05-13
申请人： Dominic J. Heuscher
发明人： Dominic J. Heuscher
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/027 , A61B6/035 , A61B6/06 , A61B6/4085 , A61B6/4476 , A61B6/466 , A61B6/503 , A61B6/542
摘要： A medical imaging system (100) includes a radiation source (112) that rotates around an examination region about a longitudinal axis and emits radiation while translating in a direction of the longitudinal axis during a fly-by scan. A source collimator (114) collimates the emitted radiation during the fly-by scan to form a generally conical shaped radiation beam that traverses the examination region. The source collimator (114) dynamically varies collimation during the scan so as to increase and decrease a width of the radiation beam in the longitudinal axis direction during the scan. A detector array (122) detects radiation that traverses the examination region and generates signals indicative thereof. A reconstructor (126) reconstructs the signals to generate volumetric image data indicative of the examination region.
摘要翻译：医疗成像系统（100）包括辐射源（112），辐射源围绕纵向轴线的检查区域旋转，并且在飞行扫描期间沿纵向轴线的方向发射辐射。源准直器（114）在飞越扫描期间校准所发射的辐射，以形成穿过检查区域的大致圆锥形的辐射束。源准直器（114）在扫描期间动态地改变准直，以便在扫描期间增加和减小辐射束在纵向轴线方向上的宽度。检测器阵列（122）检测穿过检查区域并产生指示其的信号的辐射。重建器（126）重建信号以产生指示检查区域的体积图像数据。

10. 发明申请

US20100274120A1 SYNCHRONOUS INTERVENTIONAL SCANNER 审中-公开
标题翻译：同步传统扫描仪
公开(公告)号：US20100274120A1
公开(公告)日：2010-10-28
申请号：US12746805
申请日：2008-12-12
申请人： Dominic J. Heuscher
发明人： Dominic J. Heuscher
IPC分类号： A61B6/00 , A61B6/03
CPC分类号： A61B6/032 , A61B6/027 , A61B6/06 , A61B6/107 , A61B6/12 , A61B6/4441 , A61B6/542 , A61B6/547 , A61B34/20 , A61B2090/3762
摘要： When performing an interventional CT scan on a subject, radiation dose is limited by employing a dynamic collimator (142) that collimates X-rays emitted by an X-ray source (112). The X-ray source (112) and collimator (142) rotate around a VOI (122) in the subject, and move axially along the VOI (122) to maintain the tip of a medical instrument (144) within the field of view of the narrow cone beam. An instrument tracking component (146) maintains information related to previous and current positions of the instrument (144) relative to the VOI (122) and facilitates tracking the instrument as it moves through the VOI (122). A user interface (136) superimposes images of a sub-region of the VOI (122) in which the instrument tip is located onto a pre-generated diagnostic image for viewing by an operator, to track the medical instrument (144).
摘要翻译：当对受试者进行介入CT扫描时，通过使用准直由X射线源（112）发射的X射线的动态准直器（142）来限制辐射剂量。 X射线源（112）和准直器（142）围绕对象的VOI（122）旋转，并沿着VOI（122）轴向移动，以将医疗器械（144）的尖端保持在窄锥形梁。仪器跟踪部件（146）保持与仪器（144）相对于VOI（122）的先前和当前位置相关的信息，并且便于当仪器移动通过VOI（122）时跟踪仪器。用户界面（136）将仪器尖端所在的VOI（122）的子区域的图像叠加到预先生成的诊断图像上以供操作者观看以跟踪医疗器械（144）。

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