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41. 发明申请

US20120213424A1 METHOD AND COMPUTER SYSTEM FOR SCATTERED BEAM CORRECTION IN A MULTI-SOURCE CT 有权
标题翻译：用于多源CT中散射光束校正的方法和计算机系统
公开(公告)号：US20120213424A1
公开(公告)日：2012-08-23
申请号：US13401879
申请日：2012-02-22
申请人： Thomas Flohr , Martin Petersilka , Karl Stierstorfer
发明人： Thomas Flohr , Martin Petersilka , Karl Stierstorfer
IPC分类号： G06K9/00 , G06F7/60 , A61B6/03
CPC分类号： G01N23/046 , A61B6/032 , A61B6/06 , A61B6/4014 , A61B6/4291 , A61B6/5205 , A61B6/5282 , G01N2223/419 , G01N2223/612 , G06T11/005 , G06T2211/424
摘要： A method and a computer system are disclosed for scattered beam correction in a CT examination of an object in a multi source CT. In at least one embodiment, the method includes generating original projection data records; reconstruction of the object with the original projection data records of at least one detector; determining the scattered radiation generated by each emitter exclusively in the direction of the original beams of the at least one other emitter relative to its opposing detector; generating corrected projection data records by removing the calculated scattered radiation from the original projection data records; reconstruction of the object with the corrected projection data records, and implementing a further iteration of the method when determining the scattered radiation or issuing the reconstruction result if at least one predetermined abort criterion applies.
摘要翻译：公开了一种用于在多源CT中的对象的CT检查中的散射束校正的方法和计算机系统。在至少一个实施例中，该方法包括生成原始投影数据记录; 用至少一个检测器的原始投影数据记录重建对象; 确定由每个发射器产生的散射辐射源专用于至少一个其它发射器的原始光束相对于其相对的检测器的方向; 通过从原始投影数据记录中去除计算的散射辐射来产生校正的投影数据记录; 使用校正的投影数据记录重建对象，并且如果应用至少一个预定中止标准，则在确定散射辐射或发出重建结果时，执行该方法的进一步迭代。

42. 发明申请

US20120195403A1 TOMOSYNTHESIS IMAGING 有权
标题翻译： TOMOSYNTHESIS成像
公开(公告)号：US20120195403A1
公开(公告)日：2012-08-02
申请号：US13360128
申请日：2012-01-27
申请人： Srinivasan Vedantham , Andrew Karellas
发明人： Srinivasan Vedantham , Andrew Karellas
IPC分类号： G01N23/04 , A61B6/02 , A61B6/03
CPC分类号： A61B6/022 , A61B6/025 , A61B6/0414 , A61B6/4007 , A61B6/4233 , A61B6/4291 , A61B6/502 , A61B6/5282
摘要： Systems and methods for providing radiographic, stereoscopic and tomographic images of an object of interest. Examples of objects of interest are body parts of living beings, such as the human breast and the human chest. The apparatus includes a high-fluence rate x-ray source and a plurality of satellite x-ray sources operating at lower fluence rate than the high-fluence rate source. A controller controls the operation and locations of the sources, and the operation of a detector. The method provides procedures in which the operation of the high-fluence source and the satellite sources are individually controlled as to location and orientation relative to the object of interest. In some operations, one satellite source may be operating while another satellite source may be repositioning. By proper control, a reduced x-ray dose and reduced operating time can be attained, thereby improving image quality, patient care, and patient experience.
摘要翻译：用于提供感兴趣对象的放射照相，立体和断层图像的系统和方法。感兴趣的对象的例子是生物的身体部位，例如人乳房和人体胸部。该装置包括高通量率x射线源和以比高通量率源更低注量率运行的多个卫星X射线源。控制器控制源的操作和位置以及检测器的操作。该方法提供了程序，其中高流量源和卫星源的操作被单独地控制为相对于感兴趣对象的位置和取向。在某些操作中，一个卫星源可能在运行，而另一个卫星源可能正在重新定位。通过适当的控制，可以实现减少的X射线剂量和减少的操作时间，从而提高图像质量，患者护理和患者体验。

43. 发明授权

US08199879B2 Methods of scatter correction of x-ray projection data 1 有权
标题翻译： x射线投影数据的散射校正方法1
公开(公告)号：US08199879B2
公开(公告)日：2012-06-12
申请号：US12760491
申请日：2010-04-14
申请人： Josh Star-Lack , Mingshan Sun
发明人： Josh Star-Lack , Mingshan Sun
IPC分类号： H05G1/64
CPC分类号： A61B6/032 , A61B6/483 , A61B6/5282 , G06T11/005
摘要： A system and method for forming an adjusted estimate of scattered radiation in a radiographic projection of a target object, which incorporates scattered radiation from objects adjacent to the target object, such as a patient table. A piercing point equalization method is disclosed, and a refinement of analytical kernel methods which utilizes hybrid kernels is also disclosed.
摘要翻译：一种用于形成目标对象的射线照相投影中的散射辐射的调整估计的系统和方法，其包括与目标物体相邻的物体（例如患者台）的散射辐射。公开了一种穿刺点均衡方法，并且还公开了利用混合内核的分析核方法的改进。

44. 发明授权

US08199873B2 Methods of scatter correction of x-ray projection data 2 有权
标题翻译： x射线投影数据的散射校正方法2
公开(公告)号：US08199873B2
公开(公告)日：2012-06-12
申请号：US12760851
申请日：2010-04-15
申请人： Josh Star-Lack , Mingshan Sun
发明人： Josh Star-Lack , Mingshan Sun
IPC分类号： A61B6/03
CPC分类号： A61B6/03 , A61B6/032 , A61B6/0407 , A61B6/5205 , A61B6/5282 , G06T11/005
摘要： A system and method for forming an adjusted estimate of scattered radiation in a radiographic projection of a target object, which incorporates scattered radiation from objects adjacent to the target object, such as a patient table. A piercing point equalization method is disclosed, and a refinement of analytical kernel methods which utilizes hybrid kernels is also disclosed.
摘要翻译：一种用于形成目标对象的射线照相投影中的散射辐射的调整估计的系统和方法，其包括与目标物体相邻的物体（例如患者台）的散射辐射。公开了一种穿刺点均衡方法，并且还公开了利用混合内核的分析核方法的改进。

45. 发明授权

US08149987B2 Radiation imaging apparatus and control method for the same 有权
标题翻译：辐射成像装置及其控制方法相同
公开(公告)号：US08149987B2
公开(公告)日：2012-04-03
申请号：US12749239
申请日：2010-03-29
申请人： Takashi Ogura , Osamu Tsujii
发明人： Takashi Ogura , Osamu Tsujii
IPC分类号： A61B6/04
CPC分类号： A61B6/502 , A61B6/025 , A61B6/4007 , A61B6/4291 , A61B6/469 , A61B6/488 , A61B6/5282
摘要： A radiation imaging apparatus that captures radiographic images includes a radioactive ray generating unit configured to irradiate a subject with a plurality of radioactive rays generated by a plurality of electron sources. A radioactive ray detection unit captures a plurality of first radiographic images based on detection of the plurality of radioactive rays that have passed through the subject at different irradiation angles. Area specification unit specifies an object area using the plurality of first radiographic images captured by the radioactive ray detection unit, and a determination unit determines an electron source to be driven from the plurality of electron sources based on the object area specified by the area specification unit, such that a second radiographic image is captured based on the radioactive rays generated by the electron source determined by the determination unit.
摘要翻译：拍摄放射线照相图像的放射线摄像装置包括放射线产生部，被配置为用多个电子源产生的多个放射线照射被检体。放射线检测单元基于在不同的照射角度下检测到已经通过被检体的多个放射线，来捕获多个第一放射线图像。区域指定单元使用由放射线检测单元捕获的多个第一放射线照相图像来指定对象区域，并且确定单元基于由区域指定单元指定的对象区域确定要从多个电子源驱动的电子源使得基于由确定单元确定的由电子源产生的放射线捕获第二放射线照相图像。

46. 发明申请

US20110110500A1 RADIOGRAPHIC APPARATUS 有权
标题翻译：放映设备
公开(公告)号：US20110110500A1
公开(公告)日：2011-05-12
申请号：US12915189
申请日：2010-10-29
申请人： Akinori Fujita
发明人： Akinori Fujita
IPC分类号： G21K1/10
CPC分类号： A61B6/5252 , A61B6/4021 , A61B6/4233 , A61B6/4291 , A61B6/4441 , A61B6/5282 , G06T5/50 , G06T2207/10121 , G21K1/025 , G21K2207/00
摘要： In a radiographic apparatus, positions of a radiation grid and a radiation detector are determined such that, when a radiation source and the radiation detector are in a standard position, an arrangement pitch of shadows of absorbing foil strips appearing on a detecting plane of the radiation detector as a result of a radiation beam being emitted from the radiation source and blocked by the radiation grid is an integral multiple of an arrangement pitch in a transverse direction of radiation detecting elements. Further, the shadows of the absorbing foil strips appear without covering transversely adjacent pairs of the detecting elements.
摘要翻译：在放射线照相设备中，辐射网格和辐射探测器的位置被确定为使得当辐射源和辐射探测器处于标准位置时，在辐射的检测平面上出现吸收箔条的阴影的排列间距作为辐射束从辐射源发射并被辐射栅格阻挡的结果的检测器是放射线检测元件的横向方向上的排列间距的整数倍。此外，吸收箔条的阴影出现而不覆盖横向相邻的检测元件对。

47. 发明申请

US20110038522A1 METHOD OF REMOVING MOIRÉ IN FLUOROSCOPIC X-RAY IMAGE AND X-RAY IMAGING EQUIPMENT USING THE SAME 有权
标题翻译：使用其进行荧光X射线图像和X射线成像设备的移除方法
公开(公告)号：US20110038522A1
公开(公告)日：2011-02-17
申请号：US12988457
申请日：2009-01-22
申请人： Shingo Baba
发明人： Shingo Baba
IPC分类号： G06K9/40
CPC分类号： A61B6/5282 , A61B6/00 , A61B6/4291 , A61B6/5258 , G06T5/002 , G06T5/005 , G06T5/10 , G06T2207/10116 , G06T2207/30004
摘要： Provided is a method of removing a moiré in a fluoroscopic X-ray image that preliminarily complements a defective pixel with no disturbance in regularity of a moiré pattern to ensure that no trace of the defective pixel and no ghost thereof create even when the fluoroscopic X-ray image contains the defective pixel. The method of removing the moiré in the fluoroscopic X-ray image according to this invention includes a moiré frequency derivation section that determines frequency of the moiré that appears in the fluoroscopic X-ray image, a defective pixel preliminary complement section that forms a preliminary complement image, a moiré removal section that conducts frequency analysis of the preliminary complement image to form a moiré removed image, an image smoothing section that that performs an image smoothing process to the preliminary complement image to form a smoothed image suitable for complement of the defective pixel, and a first defective pixel recomplement section that recomplements the defective pixel by superimposing the moiré removed image on the smoothed image.
摘要翻译：本发明提供了一种在荧光X射线图像中去除莫尔条纹图像中的莫尔条纹的方法，该方法是预先补充不规则的波纹图案的缺陷像素，以确保即使在荧光X射线 ray图像包含有缺陷的像素。根据本发明的去除荧光X射线图像中的莫尔条纹的方法包括：莫尔频率导出部分，其确定出现在荧光X射线图像中的莫尔的频率，形成初步补体的缺陷像素初步补充部分图像，进行初步补充图像的频率分析以形成莫尔去除图像的莫尔去除部分，对初步补充图像执行图像平滑处理以形成适合于缺陷像素的补码的平滑图像的图像平滑部分以及第一缺陷像素重新补充部分，通过将去除了波纹的图像叠加在平滑图像上来重新补偿缺陷像素。

48. 发明申请

US20110033029A1 MEDICAL IMAGING SYSTEM WITH ANTI-DIFFUSION GRID 有权
标题翻译：具有抗扩散网格的医学成像系统
公开(公告)号：US20110033029A1
公开(公告)日：2011-02-10
申请号：US12832314
申请日：2010-07-08
申请人： Remy Klausz
发明人： Remy Klausz
IPC分类号： G21K1/10
CPC分类号： A61B6/5282 , A61B6/06 , A61B6/4291 , A61B6/502 , A61B6/544 , G03B42/025
摘要： The invention relates to a process for acquisition of one or more radiological image(s) of an object of a region of interest on a patient, obtained by means of a radiological imaging system, in which the system includes: a radiation source, a detector arranged opposite the source and at least one anti-diffusion grid, which process includes steps consisting of: determining characteristics of the object to be imaged; controlling, according to the characteristics determined, a movement of the anti-diffusion grid in order to position it in or remove it from an operational position between the object and the detector, in which the operational position corresponds to a position of the grid centered on the source-detector axis and parallel to the plane including the detector; and acquiring images of the structure exposed to the radiation emitted by the source.
摘要翻译：本发明涉及一种用于获取通过放射成像系统获得的患者感兴趣区域的一个或多个放射学图像的方法，其中该系统包括：辐射源，检测器与源极相对并且至少一个反扩散栅格布置，该处理包括以下步骤：确定待成像对象的特性; 根据所确定的特性控制反扩散栅格的移动，以便将其定位在物体和检测器之间的操作位置或将其从其中移除，其中操作位置对应于以栅格为中心的栅格的位置源检测器轴并平行于包括检测器的平面; 并且获取暴露于由源发射的辐射的结构的图像。

49. 发明申请

US20100208870A1 SCATTERED RADIATION CORRECTION METHOD AND SCATTERED RADIATION CORRECTION APPARATUS 有权
标题翻译：散射辐射校正方法和散射辐射校正装置
公开(公告)号：US20100208870A1
公开(公告)日：2010-08-19
申请号：US12388947
申请日：2009-02-19
申请人： Yu Zou , Michael D. Silver , Satoru Ohishi , Kozo Sato
发明人： Yu Zou , Michael D. Silver , Satoru Ohishi , Kozo Sato
IPC分类号： G01N23/201 , G06K9/00
CPC分类号： A61B6/032 , A61B6/5282 , G06T5/003 , G06T5/50 , G06T2207/10081 , G06T2207/20224 , G06T2207/30004
摘要： Scattered radiation is estimated by using a reduced image generated from a projection image, and the scattered radiation image of the projection image is acquired by enlargement processing. The scattered radiation correction of the projection image is executed by subtracting the obtained scattered radiation image from the projection image. In addition, when a primary X-ray image and a scattered radiation image in each projection direction are to be obtained by sequential approximation calculation, a primary X-ray image which has already been identified in an adjacent projection direction is used as a first estimated value (initially set value) in next sequential calculation.
摘要翻译：通过使用从投影图像生成的缩小图像来估计散射辐射，并且通过放大处理获取投影图像的散射辐射图像。通过从投影图像中减去所获得的散射辐射图像来执行投影图像的散射辐射校正。此外，当通过顺序近似计算要获得每个投影方向上的主X射线图像和散射辐射图像时，将已经在相邻投影方向上识别的主X射线图像用作第一估计值（初始设定值）。

50. 发明申请

US20100140485A1 IMAGING SYSTEM AND METHOD WITH SCATTER CORRECTION 有权
标题翻译：具有扫描校正的成像系统和方法
公开(公告)号：US20100140485A1
公开(公告)日：2010-06-10
申请号：US12331549
申请日：2008-12-10
申请人： Debasish Mishra , William Robert Ross , Thomas James Batzinger , Manoharan Venugopal , Forrest Frank Hopkins , Nityanand Gopalika , Vamshi Krishna Reddy Kommareddy , Rajashekar Venkatachalam , Prasad Thapa
发明人： Debasish Mishra , William Robert Ross , Thomas James Batzinger , Manoharan Venugopal , Forrest Frank Hopkins , Nityanand Gopalika , Vamshi Krishna Reddy Kommareddy , Rajashekar Venkatachalam , Prasad Thapa
IPC分类号： G21K1/02
CPC分类号： H04N5/32 , A61B6/5282 , G01N23/046 , G01N2223/316
摘要： An imaging technique is provided for acquiring scatter free images of an object. The technique includes acquiring a plurality of projection images of the object using a source and a detector oriented at a plurality of projection angles relative to the object, and generating a plurality of scatter free projection images by correcting the plurality of projection images based on respective ones of a plurality of stored scatter images. The scatter images are generated and stored for each of the projection angles by positioning a scatter rejection plate between the object and the detector. The technique further includes reconstructing a three-dimensional image of the object based on the scatter free projection images.
摘要翻译：提供了一种用于获取物体的无分散图像的成像技术。该技术包括使用源和相对于物体以多个投影角定向的检测器获取对象的多个投影图像，并且通过基于相应的对象来校正多个投影图像来生成多个无散射投影图像的多个存储的散射图像。通过在物体和检测器之间放置散射抑制板，为每个投影角度生成和存储散射图像。该技术还包括基于无分散投影图像来重建对象的三维图像。

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