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1. 发明申请

US20180132800A1 SYSTEMS AND METHODS FOR REDUCING RADIATION DOSE IN CT 审中-公开
公开(公告)号：US20180132800A1
公开(公告)日：2018-05-17
申请号：US15824862
申请日：2017-11-28
申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
发明人： Danny JJ Wang , Thomas Martin , John M. Hoffman
IPC分类号： A61B6/03 , A61B6/06 , A61B6/00 , G06T11/00
CPC分类号： A61B6/035 , A61B6/02 , A61B6/032 , A61B6/06 , A61B6/40 , A61B6/405 , A61B6/542 , G06T11/005 , G06T11/006 , G06T2211/412 , G06T2211/421 , G21K1/02 , H01J35/30 , H05G1/56 , H05G1/60 , Y10S378/901
摘要： A low-dose CT imaging system and method that operates according to a pulsed X-ray emission scheme according to a predefined sequence of rotation angles of the X-ray source, along with image reconstruction algorithms to achieve high spatial and temporal resolution for CT scans. The systems and methods involve high speed switching (on the order of milliseconds) to generate pulsed exposure of X-ray radiation to the patient, reducing radiation dose by 4-8 fold, or more.

2. 发明申请

US20170133823A1 LASER SYSTEM WITH REDUCED APPARENT SPECKLE 审中-公开
公开(公告)号：US20170133823A1
公开(公告)日：2017-05-11
申请号：US15417580
申请日：2017-01-27
申请人： LaserMax, Inc.
发明人： Brian L. Olmsted
IPC分类号： H01S5/042 , G02B27/48 , H01S5/065
CPC分类号： H01S5/0427 , G01N21/3563 , G01N21/474 , G01N21/8806 , G01N21/8851 , G01N21/956 , G01N2021/479 , G01N2201/06113 , G02B21/365 , G02B27/20 , G02B27/48 , H01S5/02288 , H01S5/0651 , Y10S378/901
摘要： Laser systems with reduced apparent speckle are provided. The laser systems emit laser light having different mode structures that change within a time period of an integration period of an imaging system used to observe a field of view that is at least in part illuminated by the laser systems.

3. 发明授权

US09031199B2 X-ray computed tomography apparatus and X-ray diagnostic apparatus 有权
标题翻译： X射线计算机断层摄影装置和X射线诊断装置
公开(公告)号：US09031199B2
公开(公告)日：2015-05-12
申请号：US13195381
申请日：2011-08-01
申请人： Shigeru Katayama
发明人： Shigeru Katayama
IPC分类号： H05G1/56 , H05G1/58 , H05G1/10 , A61B6/00 , G06F19/00
CPC分类号： A61B6/545 , A61B6/00 , A61B6/56 , G06F19/30 , G16H40/20 , G16H40/63 , Y10S378/901
摘要： According to one embodiment, in an X-ray computed tomography apparatus including a gantry unit including an X-ray tube and an X-ray detector, a bed unit, and a console, the X-ray computed tomography apparatus includes a storage unit, a power supply unit, and a power supply control unit. The storage unit stores examination schedule data of the X-ray computed tomography. The power supply unit selectively operates between an active mode of supplying power to at least one of the gantry unit, the bed unit, and the console and a standby mode of stopping supplying power to at least one of the bed unit and the gantry unit and supplying, to the console, power smaller than power supplied in the active mode. The power supply control unit controls switching from the active mode to the standby mode based on the examination schedule data.
摘要翻译：根据一个实施例，在包括具有X射线管和X射线检测器，床单元和控制台的台架单元的X射线计算机断层摄影装置中，X射线计算机断层摄影装置包括存储单元，电源单元和电源控制单元。存储单元存储X射线计算机断层摄影的检查计划数据。供电单元选择性地在向台架单元，床单元和控制台中的至少一个供电的主动模式和停止向床单元和台架单元中的至少一个供电的待机模式下操作，以及向控制台供电小于在主动模式下供电的功率。电源控制单元基于检查时间表数据控制从活动模式切换到待机模式。

4. 发明授权

US09008262B2 X-ray CT apparatus and image processing apparatus 有权
标题翻译： X射线CT装置和图像处理装置
公开(公告)号：US09008262B2
公开(公告)日：2015-04-14
申请号：US13720184
申请日：2012-12-19
申请人： Satoru Nakanishi
发明人： Satoru Nakanishi
IPC分类号： G01N23/083 , G06K9/44 , G06K9/60 , G06T11/00 , G01N23/04 , A61B6/03 , A61B6/00
CPC分类号： G06T11/003 , A61B6/032 , A61B6/5205 , A61B6/5258 , G01N23/046 , Y10S378/901
摘要： According to one embodiment, an X-ray CT apparatus includes an generation unit, detection unit, processing unit, and reconstruction unit. The generation unit irradiates an object with X-rays. The detection unit includes detection elements corresponding to a plurality of channels, which output detection signals upon detecting X-rays. The processing unit smoothes projection data constituted by numerical values corresponding to signals output from the elements so as to more strongly smooth a portion exhibiting a larger amount of change in the numerical value. The reconstruction unit reconstructs an image by using a plurality of projection data smoothed by the image processing unit.
摘要翻译：根据一个实施例，X射线CT装置包括生成单元，检测单元，处理单元和重建单元。生成单元用X射线照射物体。检测单元包括对应于多个通道的检测元件，其在检测X射线时输出检测信号。处理单元平滑由与从元件输出的信号相对应的数值构成的投影数据，以便使显示出数值变化量大的部分更加平滑。重建单元通过使用由图像处理单元平滑的多个投影数据来重建图像。

5. 发明授权

US08976925B2 Method and apparatus of cone beam CT dynamic imaging 有权
标题翻译：锥束CT动态成像的方法和装置
公开(公告)号：US08976925B2
公开(公告)日：2015-03-10
申请号：US12618357
申请日：2009-11-13
申请人： Ruola Ning , Dong Yang
发明人： Ruola Ning , Dong Yang
IPC分类号： A61B6/03 , G06T11/00 , A61B6/04 , A61B6/00 , A61B6/02
CPC分类号： G06T11/006 , A61B6/027 , A61B6/032 , A61B6/0435 , A61B6/502 , Y10S378/901
摘要： A cone-beam scanning system scans along a half circle. The reconstruction uses a weighting function which decreases for rows farther from the scan plane to take the redundancy of the projection data into account. Another embodiment uses a circle plus sparse helical scan geometry. Image data can be taken in real time.
摘要翻译：锥形束扫描系统沿半圆扫描。重建使用对于距离扫描平面更远的行减小的加权函数来考虑投影数据的冗余度。另一个实施例使用圆加稀疏螺旋扫描几何。图像数据可以实时拍摄。

6. 发明授权

US08957894B2 System and method for four dimensional angiography and fluoroscopy 有权
标题翻译：四维血管造影和荧光透视的系统和方法
公开(公告)号：US08957894B2
公开(公告)日：2015-02-17
申请号：US14170986
申请日：2014-02-03
申请人： Mistretta Medical, LLC , CMS Medical, LLC
发明人： Charles A. Mistretta , Charles M. Strother
IPC分类号： G06T15/00 , G09G5/00 , G01N23/223 , G01N23/00 , A61B6/00 , A61B6/02 , A61B6/12 , G06T11/00 , A61M5/00
CPC分类号： A61B6/485 , A61B6/02 , A61B6/12 , A61B6/4441 , A61B6/481 , A61B6/486 , A61B6/487 , A61B6/504 , A61B6/5223 , A61B6/5247 , A61M5/007 , G06T11/008 , G06T2211/404 , G06T2211/412 , G06T2211/436 , Y10S378/901
摘要： A method for generating time-resolved 3D medical images of a subject by imparting temporal information from a time-series of 2D medical images into 3D images of the subject. Generally speaking, this is achieved by acquiring image data using a medical imaging system, generating a time-series of 2D images of a ROI from at least a portion of the acquired image data, reconstructing a 3D image substantially without temporal resolution from the acquired image data, and selectively combining the time series of 2D images with the 3D image.
摘要翻译：一种用于通过将来自2D医学图像的时间序列的时间信息传递到对象的3D图像来生成对象的时间分辨3D医学图像的方法。一般来说，这是通过使用医学成像系统获取图像数据来实现的，从所获取的图像数据的至少一部分生成ROI的2D图像的时间序列，从获取的图像重建基本上没有时间分辨率的3D图像数据，并且选择性地将2D图像的时间系列与3D图像组合。

7. 发明申请

US20140153697A1 X-RAY IMAGING APPARATUS AND METHOD FOR CONTROLLING THE SAME 有权
标题翻译： X射线成像装置及其控制方法
公开(公告)号：US20140153697A1
公开(公告)日：2014-06-05
申请号：US13919496
申请日：2013-06-17
申请人： Samsung Electronics Co., Ltd.
发明人： Choong Hwan CHOI , Do Kwan OH , Woo Sup HAN
IPC分类号： A61B6/00
CPC分类号： A61B6/54 , A61B6/032 , A61B6/0407 , A61B6/08 , A61B6/4233 , A61B6/4464 , A61B6/467 , G06F3/017 , Y10S378/901
摘要： Disclosed herein are an X-ray imaging apparatus which recognizes a marker located at a part to be subjected to X-ray imaging from an image of a subject imaged by a camera and which controls a respective movement of each of an X-ray tube and an X-ray detector to a respective position which corresponds to the recognized marker, and a method for controlling the same. An X-ray imaging apparatus includes an X-ray tube which radiates X-rays toward a subject, an X-ray detector which detects X-rays which propagate through the subject, an imaging unit which generates an image of the subject, a recognizer which recognizes a part to be subjected to X-ray imaging from the image of the subject, and a position controller which controls a movement of the X-ray tube and the X-ray detector to a position corresponding to the part to be subjected to X-ray imaging.
摘要翻译：这里公开了一种X射线成像装置，其从位于由摄像机成像的被摄体的图像中识别位于要进行X射线成像的部位的标记，并且控制X射线管和对应于识别标记的相应位置的X射线检测器及其控制方法。一种X射线摄像装置，包括向被检体照射X射线的X射线管，检测通过被检体传播的X射线的X射线检测器，产生被检体的图像的成像单元，识别器其识别从被检体的图像进行X射线成像的部位，以及位置控制器，其将X射线管和X射线检测器的移动控制在与要受到对象的部位对应的位置 X光成像。

8. 发明申请

US20140093036A1 TOMOGRAPHIC IMAGE GENERATION DEVICE AND METHOD 有权
标题翻译： TOMOGRAPHIC图像生成装置和方法
公开(公告)号：US20140093036A1
公开(公告)日：2014-04-03
申请号：US14019315
申请日：2013-09-05
申请人： FUJIFILM Corporation
发明人： Jun MASUMOTO , Masahiko YAMADA , Hiroaki YASUDA , Yasuko YAHIRO , Nobuhiko KASHIWAGI , Ayako MURAMOTO , Haruyasu NAKATSUGAWA
IPC分类号： A61B6/00
CPC分类号： A61B6/502 , A61B6/025 , A61B6/5205 , Y10S378/901
摘要： Radiographic images for different imaging directions taken by applying radiation to a subject from the different imaging directions are obtained, and a plurality of tomographic images of the subject are generated based on the obtained plurality of radiographic images. Then, compression processing in the direction perpendicular to slice planes of the generated tomographic images is applied to the tomographic images to generate compressed tomographic images, wherein a range of the imaging directions is obtained, and a compression rate of the compression processing is set based on the obtained range of the imaging directions.
摘要翻译：获得通过从不同成像方向对受试者施加辐射而获得的不同成像方向的放射照相图像，并且基于所获得的多个放射照相图像生成被检体的多个断层图像。然后，将垂直于生成的断层图像的切片平面的方向的压缩处理应用于断层图像，以产生压缩断层图像，其中获得成像方向的范围，并且基于压缩处理的压缩率获得的成像方向的范围。

9. 发明申请

US20130094739A1 X-RAY CT APPARATUS AND CONTROL METHOD THEREOF 有权
标题翻译： X射线CT装置及其控制方法
公开(公告)号：US20130094739A1
公开(公告)日：2013-04-18
申请号：US13703448
申请日：2011-06-16
申请人： Masakazu Okabe
发明人： Masakazu Okabe
IPC分类号： G01N23/04
CPC分类号： G01N23/046 , A61B6/032 , A61B6/5205 , A61B6/5258 , G06T11/006 , G06T2211/421 , Y10S378/901
摘要： In order to generate an X-ray CT image with optimal quality for each part and each region of an object when scanning the object across a plurality of parts using a plane detector, there is provided an X-ray CT apparatus including smoothing means 230 and filtering means 250 for generating a convolution filter on the basis of feature amounts of projection data output from the X-ray detector 12 and superimposing the convolution filter on the projection data, reconstruction means 200 for generating an X-ray CT image of the object by performing a reconstruction operation on the projection data on which the convolution filter is superimposed, and image display means 280 for displaying the image generated by the reconstruction means 200.
摘要翻译：为了在使用平面检测器扫描多个部件时对物体的每个部分和每个区域产生具有最佳质量的X射线CT图像，提供了一种X射线CT装置，其包括平滑装置230和滤波装置250，用于根据从X射线检测器12输出的投影数据的特征量并将卷积滤波器叠加在投影数据上产生卷积滤波器;重建装置200，用于通过以下步骤生成对象的X射线CT图像对叠加有卷积滤波器的投影数据进行重构操作，以及用于显示由重建装置200产生的图像的图像显示装置280。

10. 发明申请

US20120294417A1 IMAGE DOMAIN BASED NOISE REDUCTION FOR LOW DOSE COMPUTED TOMOGRAPHY FLUOROSCOPY 有权
标题翻译：用于低剂量计算机图像荧光的基于图像域的噪声减少
公开(公告)号：US20120294417A1
公开(公告)日：2012-11-22
申请号：US13557467
申请日：2012-07-25
申请人： Sachin MOGHE , Ilmar Hein
发明人： Sachin MOGHE , Ilmar Hein
IPC分类号： A61B6/03
CPC分类号： A61B6/03 , G06T11/006 , Y10S378/901
摘要： A method of computed-tomography and a computed-tomography apparatus in which x-ray projection data is acquired at a number of views for a scan of an object. Partial images are created from data for a desired number of said views. Full scan images are created from plural ones of the partial images. Non-overlapping time images are created from the full-scan images. Gradient images are also created. An improved image is created by weighting respective ones of the full scan and non-overlapping time images using the gradient image. The improved image has increased sharpness with reduced noise.
摘要翻译：一种计算机断层摄影的方法和计算机断层摄影装置，其中在用于对象的扫描的多个视图处获取x射线投影数据。从所需数量的所述视图的数据中创建部分图像。从多个部分图像创建全扫描图像。不重叠的时间图像是从全扫描图像创建的。渐变图像也被创建。通过使用梯度图像对相应的全扫描和非重叠时间图像进行加权来创建改进的图像。改进的图像增加了清晰度，降低了噪音。

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