公开(公告)号：US07319734B2

公开(公告)日：2008-01-15

申请号：US10412723

申请日：2003-04-11

申请人： Guy M. Besson ,  Morgan W. Nields ,  Mike Tesic

发明人： Guy M. Besson ,  Morgan W. Nields ,  Mike Tesic

IPC分类号： A61B6/04

CPC分类号： A61B6/502 ,  A61B6/0414 ,  A61B6/06 ,  A61B6/4291 ,  A61B6/544

摘要： Scatter effects are reduced in a radiographic imaging device, such as a digital slot scan mammographic imaging device, by reducing detected scatter and processing detector information to compensate for scatter effects. A digital mammographic imaging system (10) may include a source (24) for transmitting a narrow beam (28) and a detector assembly (32) for detecting the beam (28). The beam (28) and the detector assembly (32) may synchronously scann across the patient's breast (48) to obtain an image. Collimator slats (74) at the leading and trailing edges of the detector may reduce detected scatter. Attenuators (76 and 92) at the ends of the scanned motion and at the anterior edge of the detector array may assist in determining a spatial intensity profile. The spatial intensity profile information together with other imaging signal and patient dependent parameters may be used to estimate and compensate for various scatter effects.

摘要翻译： 通过减少检测到的散射和处理检测器信息来补偿散射效应，放射线照相成像装置（例如数字缝隙扫描乳腺摄影成像装置）中的散射效应降低。 数字乳腺成像系统（10）可以包括用于传输窄梁（28）的源（24）和用于检测梁（28）的检测器组件（32）。 梁（28）和检测器组件（32）可以同步扫描穿过患者的乳房（48）以获得图像。 在检测器的前缘和后缘处的准直板条（74）可以减少检测到的散射。 在扫描的运动的末端和检测器阵列的前边缘处的衰减器（76和92）可以有助于确定空间强度分布。 可以使用空间强度分布信息以及其他成像信号和患者依赖参数来估计和补偿各种散射效应。

公开(公告)号：US07564938B2

公开(公告)日：2009-07-21

申请号：US10552934

申请日：2004-04-12

申请人： Mike Tesic ,  Guy M. Besson ,  Morgan W. Nields

发明人： Mike Tesic ,  Guy M. Besson ,  Morgan W. Nields

IPC分类号： G01N23/00 ,  G01N23/201 ,  A61B6/04

CPC分类号： A61B5/1075 ,  A61B6/0414 ,  A61B6/06 ,  A61B6/4291 ,  A61B6/502 ,  A61B6/5282 ,  A61B6/544 ,  G06T5/004

摘要： Scatter effects are reduced in a radiographic imaging device, such as a digital slot scan mammographic imaging device, by reducing detected scatter and processing detector information to compensate for scatter effects. In one embodiment, a digital mammographic imaging system (10) includes a source (24) for transmitting a narrow beam (28) and a detector assembly (32) for detecting the beam (28). The beam (28) and the detector assembly (32) are synchronously scanned across the patient's breast (48) to obtain an image. Collimator slats (74) are provided at the leading and trailing edges of the detector to reduce detected scatter. Additionally, attenuators (76 and 92) are provided at the ends of the scanned motion and at the anterior edge of the detector array to assist in determining a spatial intensity profile. The spatial intensity profile information together with other imaging signal and patient dependent parameters are used in image processing to estimate and compensate for various scatter effects including single and multiple scatters and Compton and Rayleigh scatter.

摘要翻译： 通过减少检测到的散射和处理检测器信息来补偿散射效应，放射线照相成像装置（例如数字缝隙扫描乳腺摄影成像装置）中的散射效应降低。 在一个实施例中，数字乳腺成像系统（10）包括用于传输窄梁（28）的源（24）和用于检测梁（28）的检测器组件（32）。 梁（28）和检测器组件（32）被同步扫描穿过患者的乳房（48）以获得图像。 准直板条（74）设置在检测器的前缘和后缘，以减少检测到的散射。 此外，衰减器（76和92）设置在扫描的运动的端部和检测器阵列的前边缘处，以帮助确定空间强度分布。 在图像处理中使用空间强度分布信息以及其他成像信号和患者依赖参数来估计和补偿包括单次和多次散射以及康普顿和瑞利散射的各种散射效应。

公开(公告)号：US06891920B1

公开(公告)日：2005-05-10

申请号：US10307215

申请日：2002-11-29

申请人： Thomas J. Minyard ,  Morgan W. Nields ,  Guy M. Besson

发明人： Thomas J. Minyard ,  Morgan W. Nields ,  Guy M. Besson

IPC分类号： A61B5/00 ,  A61B6/00 ,  A61B6/04 ,  G06F19/00

CPC分类号： A61B6/465 ,  A61B5/0013 ,  A61B6/0414 ,  A61B6/463 ,  A61B6/469 ,  A61B6/502 ,  A61B6/5241 ,  A61B6/563 ,  G06F19/00 ,  G06F19/321 ,  Y10S378/901

摘要： Disclosed is a mammographic imaging system and tools for processing mammographic images to enhance image acquisition and review workflow. The systems and tools enable rapid access to digital image information providing for improved workflow management and identification of images, upon initial review. The system and tools also allow for background processing of image information to reduce workflow delay. Specifically, digital images are processed in the background, i.e., they are automatically processed, free from specific task-orientated direction by a user, using resources that are not otherwise occupied addressing user-directed tasks. Background processing that may be supported includes preprocessing and interim processing. Preprocessing refers to processing of an image that occurs prior to initial review of that image by a physician. Interim processing refers to background processing that occurs during a review session, e.g., in a time period between initial review and a subsequent review of an image.

摘要翻译： 公开了一种乳腺摄影成像系统和用于处理乳房X线摄影图像的工具，以增强图像采集和审查工作流程。 该系统和工具可以快速访问数字图像信息，以便在初始审核时提供改进的工作流程管理和图像识别。 系统和工具还允许对图像信息进行后台处理，以减少工作流延迟。 具体地说，数字图像在后台被处理，即，它们被用户自动处理，没有特定的面向任务的方向，使用没有另外占用的资源来解决用户导向的任务。 可以支持的后台处理包括预处理和中间处理。 预处理是指在由医师对该图像进行初始审查之前发生的图像的处理。 临时处理是指在审查会话期间发生的后台处理，例如在初始审查和后续审查图像之间的时间段内。

公开(公告)号：US06846289B2

公开(公告)日：2005-01-25

申请号：US10455878

申请日：2003-06-06

申请人： Guy M. Besson ,  Morgan W. Nields

发明人： Guy M. Besson ,  Morgan W. Nields

IPC分类号： A61B6/00 ,  A61B8/08 ,  A61B8/00

CPC分类号： A61B6/502 ,  A61B6/4417 ,  A61B6/488 ,  A61B6/5247 ,  A61B6/563 ,  A61B8/0825 ,  A61B8/4416 ,  A61B8/565

摘要： An integrated x-ray and ultrasound medical imaging system is provided, wherein a radiation detection means and ultrasound transducer may be disposed for scanning movement for image acquisition along either the same or substantially coincidental paths. The radiation detection means and ultrasound transducer may be advantageously located on the same side of the imaged body portion. The x-ray and ultrasound imaging operations may be sequential, partially overlapping, or synchronous. By virtue of the noted arrangement, increased accuracy and medical efficiencies can be realized.

摘要翻译： 提供了一种集成的x射线和超声医学成像系统，其中可以设置放射线检测装置和超声换能器，用于扫描沿相同或基本上重合的路径进行图像采集的运动。 放射线检测装置和超声换能器可以有利地位于成像体部分的同一侧上。 x射线和超声成像操作可以是顺序的，部分重叠的或同步的。 凭借所提出的安排，可以实现提高的精度和医疗效率。

公开(公告)号：US20150069257A1

公开(公告)日：2015-03-12

申请号：US14387279

申请日：2012-03-30

申请人： Guy M. Besson

发明人： Guy M. Besson

IPC分类号： G01T1/17

CPC分类号： G01T1/17 ,  A61B6/03 ,  A61B6/032 ,  A61B6/037 ,  A61B6/463 ,  A61B6/465 ,  A61B6/469 ,  G01T1/1647 ,  G06T3/40 ,  G06T11/003 ,  G06T11/005

摘要： Among other things, one or more techniques and/or systems are described for presenting images derived from a photon counting imaging modality. Initially, a first image is derived by binning native projection data in a first manner to create first binned data and generating the first image using the first binned data. A region-of-interest within the object may be identified from the first image, and, based upon the identified region-of-interest, the native projection data may be rebinned in a second, different, manner to create second binned data. Because the second manner of binning the native projection data is different than the first manner, an image resulting from the second binned data may be different than the first image. Moreover, a user interface may be provided for assisting a user in selecting a region-of-interest and/or for specifying desired properties of the second image.

摘要翻译： 除其他之外，描述了一种或多种技术和/或系统用于呈现从光子计数成像模式导出的图像。 最初，通过以第一种方式对本机投影数据进行合并而得到第一图像，以便创建第一个收货数据，并使用第一个合并数据生成第一个图像。 可以从第一图像识别对象内的感兴趣区域，并且基于所识别的感兴趣区域，可以以第二，不同的方式重新组合本机投影数据，以创建第二合并数据。 因为本机投影数据的第二种合并方式与第一种方式不同，所以从第二收货数据得到的图像可能不同于第一图像。 此外，可以提供用户界面来帮助用户选择兴趣区域和/或用于指定第二图像的期望属性。

公开(公告)号：US08781062B2

公开(公告)日：2014-07-15

申请号：US13533080

申请日：2012-06-26

申请人： Guy M. Besson

发明人： Guy M. Besson

IPC分类号： G01N23/04

CPC分类号： G01N23/04

摘要： Among other things, one or more techniques and/or systems are described for dynamically adjusting one or more X-ray acquisition parameters of an X-ray imaging modality. During a first portion of an examination of an object, the object is examined using a first set of X-ray acquisition parameters and a first image is generated. A region-of-interest is identified in the first image and one or more X-ray acquisition parameters are adjusted as a function of the identified region-of-interest to establish a second set of X-ray acquisition parameters. During a second portion of the examination of the object, the object is examined using the second set of X-ray acquisition parameters to generate a second image. In this way, X-ray acquisition parameters can be adjusted in real-time or ‘on the fly’ to obtain a (more) desired image.

摘要翻译： 其中，描述了一个或多个技术和/或系统用于动态地调整X射线成像模态的一个或多个X射线获取参数。 在对象的检查的第一部分期间，使用第一组X射线获取参数来检查对象，并且生成第一图像。 在第一图像中识别感兴趣区域，并且根据所识别的感兴趣区域来调整一个或多个X射线获取参数以建立第二组X射线获取参数。 在对象的检查的第二部分期间，使用第二组X射线获取参数来检查对象以产生第二图像。 以这种方式，可以实时或“即时”地调整X射线获取参数以获得（更多）期望的图像。

公开(公告)号：US07342993B2

公开(公告)日：2008-03-11

申请号：US11351446

申请日：2006-02-10

申请人： Guy M. Besson

发明人： Guy M. Besson

IPC分类号： G01N23/00 ,  G21K5/10

CPC分类号： A61B6/487 ,  A61B5/06 ,  A61B6/025 ,  A61B6/06 ,  A61B6/12 ,  A61B6/4233 ,  A61B6/4291 ,  A61B6/488 ,  A61B6/5235 ,  A61B6/541 ,  A61B6/56 ,  A61B6/587

摘要： A system for low dose x-ray imaging provides for dynamic generation of an x-ray beam with specific shape, and dynamic tracking of a detector with said beam. The detector is rotatable, and translatable along two orthogonal axes, and may mount with a circular detector tray, the tray rotating around a rotation axis. Specific detector shapes include an elongated rectangular matrix, for example with additional detector cells near the rotation center to provide an increased area of continuous detection. Dynamic low-dose x-ray tomosynthesis or limited-angle tomographic imaging is enabled via simultaneous x-ray tube and detector motions during examination, such as fluoroscopic examination of a human body. Data acquired at multiple projection angles is input to a 3D image reconstruction algorithm that provides a refreshed 3D data set during continuing examination. The system may thus also automatically track a point in three-dimensional space, for example continuously locating the tip of a catheter.

摘要翻译： 用于低剂量x射线成像的系统提供具有特定形状的x射线束的动态生成以及具有所述束的检测器的动态跟踪。 检测器是可旋转的，并可沿着两个正交的轴线平移，并且可以用圆形检测器托盘安装，托盘围绕旋转轴线旋转。 具体的检测器形状包括细长矩形矩阵，例如附近的旋转中心附近的检测器单元，以提供增加的连续检测面积。 动态低剂量x射线断层合成或有限角度层析成像可以通过检查期间的X射线管和检测器运动进行，例如对人体进行透视检查。 在多个投影角度获取的数据被输入到3D图像重建算法，该算法在连续检查期间提供刷新的3D数据集。 因此，系统也可以自动跟踪三维空间中的点，例如连续地定位导管的尖端。

公开(公告)号：US06351514B1

公开(公告)日：2002-02-26

申请号：US09599763

申请日：2000-06-22

申请人： Guy M. Besson

发明人： Guy M. Besson

IPC分类号： H01B603

CPC分类号： G06T11/005 ,  A61B6/027 ,  G01T1/1644 ,  G06T11/006 ,  G06T2211/421 ,  Y10S378/901

摘要： In one embodiment, the present invention is a method for reconstructing at least one image representative of an object. This embodiment includes steps of: helically scanning the object with a multislice computed tomographic imaging system to acquire data representative of a plurality of computed tomographic image slices of an object including measurement data representative of conjugate rays; performing a minimum width helical interpolation of the acquired data to determine conjugate ray weights; increasing interpolation width when a sum of the conjugate ray weights is less than a threshold value; and filtering and backprojecting data to produce at least one image representative of the object. The filtering and backprojecting step includes weighting interpolated measurement data representative of conjugate rays using the increased interpolation width.

摘要翻译： 在一个实施例中，本发明是一种用于重建表示对象的至少一个图像的方法。 该实施例包括以下步骤：用多层计算机断层成像系统螺旋扫描物体以获取表示包含表示共轭射线的测量数据的物体的多个计算机断层图像切片的数据; 执行所获取的数据的最小宽度螺旋内插以确定共轭射线权重; 当共轭射线权重的和小于阈值时增加内插宽度; 以及过滤和反投影数据以产生代表对象的至少一个图像。 滤波和反向投影步骤包括使用增加的插值宽度来加权代表共轭射线的内插测量数据。

公开(公告)号：US06339632B1

公开(公告)日：2002-01-15

申请号：US09470770

申请日：1999-12-23

申请人： Guy M. Besson

发明人： Guy M. Besson

IPC分类号： H61B603

CPC分类号： G06T11/005 ,  A61B6/027 ,  G06T2211/428 ,  Y10S378/901

摘要： A method for rapidly processing multi-slice helical fan beam CT imaging data to generate tomographic images, the method including processing the fan beam helical data to generate parallel constant-Z projections proximate an image plane, filtering the parallel constant-Z projections and mathematically combining the filtered parallel constant-Z projections as a function of the spatial relationship between the imaging plane and the constant-Z projections to generate at least one image.

摘要翻译： 一种用于快速处理多层螺旋扇形束CT成像数据以产生断层图像的方法，所述方法包括处理扇形束螺旋数据以在图像平面附近产生平行恒定Z投影，对平行恒定Z投影进行滤波并数学组合 作为成像平面和恒定Z投影之间的空间关系的函数的经滤波的平行恒定Z投影以生成至少一个图像。

公开(公告)号：US6108575A

公开(公告)日：2000-08-22

申请号：US27278

申请日：1998-02-20

申请人： Guy M. Besson

发明人： Guy M. Besson

IPC分类号： A61B6/03 ,  G06T11/00 ,  A61B5/05

CPC分类号： G06T11/006

摘要： CT helical weighting algorithms wherein one source rotation, or 2.pi., worth of projection data is utilized for fast image reconstruction are described. Particularly, by using a distance function, and by selecting particular classes of such distance function, the discontinuity across the sinogram can be eliminated. Further, by imposing specific necessary conditions on such distance functions, single analytical expressions across the entire 2.pi. sinogram are obtained. Decomposition of these particular single distance functions provides exact, or approximated, fast two-filtering reconstruction algorithms, for which a given projection needs to be filtered only two times for an arbitrary number P of reconstruction planes. In addition, single weighting functions that depend only on the sum of the projection and fan angles can be utilized. Accordingly, after rebinning the fan-beam projections to parallel projections, the corresponding 2.pi. helical weighting algorithms do not include a dependency over the ray parameter (within one parallel projection). For these algorithms, weighting commutes with filtering, and reconstruction of an arbitrary number P of image planes requires only one filtering per projection.

摘要翻译： 描述了用于快速图像重建的CT旋转加权算法，其中一个源旋转或2π的投影数据用于快速图像重建。 特别地，通过使用距离函数，并且通过选择这种距离函数的特定类别，可以消除整个正弦图上的不连续性。 此外，通过在这样的距离函数上施加特定的必要条件，可以获得整个2个π正弦图上的单个解析表达式。 这些特定的单一距离函数的分解提供了精确或近似的快速双重滤波重建算法，对于其，给定的投影仅需要对于重构平面的任意数目P进行两次滤波。 此外，可以使用仅依赖于投影和风扇角的总和的单个加权函数。 因此，在将扇形光束投影重新组合成平行投影之后，相应的2 pi螺旋加权算法不包括对于光线参数的依赖（在一个平行投影内）。 对于这些算法，通过滤波进行权重通勤，并且重建任意数量的P个图像平面，每个投影仅需要一个滤波。