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31. 发明申请

US20030072408A1 X-ray tube and method having tilted rotation axis 失效
标题翻译：具有倾斜旋转轴的X射线管和方法
公开(公告)号：US20030072408A1
公开(公告)日：2003-04-17
申请号：US09898760
申请日：2001-07-03
发明人： Thomas G. Ebben , Douglas J. Snyder
IPC分类号： G21K001/12 , H05G001/60 , A61B006/00 , G01N023/00
CPC分类号： A61B6/4447 , A61B6/4021 , H01J35/101 , H05G1/02
摘要： A computed tomography system comprises a gantry and an x-ray tube. The gantry rotates about a gantry axis of rotation. The x-ray tube is mounted to the gantry, and comprises a rotatable assembly having a tube axis of rotation. The tube axis of rotation is angularly displaced from the gantry axis of rotation by a tilt angle. Rotation of the x-ray tube about the gantry axis of rotation produces a first moment, and rotation of the rotatable assembly about the tube axis of rotation produces a second moment that opposes the first moment.
摘要翻译：计算机断层摄影系统包括台架和X射线管。龙门架围绕龙门轴线旋转。 X射线管安装在台架上，并且包括具有管轴旋转的可旋转组件。管轴旋转角度从台架旋转轴线偏移倾斜角。 X射线管围绕机架旋转轴的旋转产生第一时刻，并且旋转组件围绕管轴旋转的旋转产生与第一时刻相对的第二时刻。

32. 发明授权

US5999587A Method of and system for cone-beam tomography reconstruction 失效
标题翻译：锥束断层扫描重建方法与系统
公开(公告)号：US5999587A
公开(公告)日：1999-12-07
申请号：US888331
申请日：1997-07-03
申请人： Ruola Ning , Xiaohui Wang
发明人： Ruola Ning , Xiaohui Wang
IPC分类号： A61B6/03
CPC分类号： A61B6/4447 , A61B6/027 , Y10S378/901
摘要： A method of and system for the 3-D reconstruction of an image from 2-D cone-beam tomography projections is disclosed in which a circle-plus-arc data acquisition geometry is utilized to provide a complete set of data so that an exact 3-D reconstruction is obtained. A volume CT scanner which uses a cone-beam x-ray source and a 2-D detector is utilized in which one set of cone-beam projections is acquired while rotating the x-ray tube and detector on the CT gantry and then another set of projections is acquired while tilting the gantry by a small angle. The projection data is preweighted and the partial derivatives of the preweighted projection data are calculated. Those calculated partial derivatives are rebinned to the first derivative of the Radon transform, for both the circular orbit data and the arc orbit data. The second partial derivative of the Radon transform is then calculated and then the reconstructed 3-D images are obtained by backprojecting using the inverse Radon transform.
摘要翻译：公开了一种用于2D扫描投影图像的三维重建的方法和系统，其中使用圆弧弧数据采集几何来提供完整的数据集，使得准确的3 -D重建获得。使用使用锥形束x射线源和2-D检测器的体积CT扫描器，其中在X射线管和检测器在CT台架上旋转并且然后另一组时获取一组锥形束投影在将机架倾斜一小角度的同时获取投影。预测投影数据，并计算预加权投影数据的偏导数。对于圆形轨道数据和弧轨道数据，将那些计算的偏导数重新定为Radon变换的一阶导数。然后计算Radon变换的第二偏导数，然后通过使用逆Radon变换的反投影获得重构的3-D图像。

33. 发明授权

US5608772A Computerized tomography apparatus 失效
标题翻译：计算机断层摄影仪
公开(公告)号：US5608772A
公开(公告)日：1997-03-04
申请号：US539707
申请日：1995-10-05
申请人： Yasuo Nobuta , Yusuke Toki , Manabu Hiraoka , Naoki Sugihara , Masahiro Ozaki
发明人： Yasuo Nobuta , Yusuke Toki , Manabu Hiraoka , Naoki Sugihara , Masahiro Ozaki
IPC分类号： A61B5/0456 , A61B6/00 , A61B6/03 , G06T11/00
CPC分类号： A61B6/481 , A61B5/0456 , A61B6/032 , A61B6/4447 , A61B6/463 , A61B6/488 , A61B6/504 , G06T11/006 , A61B6/027 , A61B6/541 , G06T2211/412 , G06T2211/428
摘要： A computerized tomography apparatus is disclosed which reconstructs a tomography image of data from multi-directional projection data in a period of time less than the time required for a scan operation for data acquisition and displays the tomography image after a lapse of a given period of time from the termination of the scan operation. This avoids the time interval between scan and image display becoming irregular. Accordingly, tomography images can be displayed successively like motion picture to observe the internal movements of a section of a human body under examination in real time.
摘要翻译：公开了一种计算机断层摄影装置，其在比用于数据采集的扫描操作所需的时间少的时间段内从多方向投影数据重建数据的断层图像，并且在经过给定时间段之后显示断层摄影图像从扫描操作终止。这避免了扫描和图像显示之间的时间间隔变得不规则。因此，层叠摄影图像可以像运动图像一样连续显示，以实时检查人体正在进行的一部分的内部运动。

34. 发明授权

US4977588A X-ray examination apparatus 失效
标题翻译： X光检查仪
公开(公告)号：US4977588A
公开(公告)日：1990-12-11
申请号：US493032
申请日：1990-03-12
申请人： Adrianus Van der Ende
发明人： Adrianus Van der Ende
IPC分类号： A61B6/00 , A61B6/03
CPC分类号： A61B6/4447 , A61B6/4405
摘要： An X-ray examination apparatus comprises a mobile base on which a table top is also mounted. An X-ray source and detector are secured to the base on a pivotal support. For transporting the X-ray examination apparatus, the support is rotated through 90.degree. with respect to the base, so that the overall width of the apparatus does not exceed the wheelbase of the base. A radiation shielding control console is secured to the wheelbase base so that it can be swung aside.

35. 发明授权

US4177382A Radiography 失效
标题翻译：射线照相
公开(公告)号：US4177382A
公开(公告)日：1979-12-04
申请号：US948301
申请日：1978-10-03
申请人： Godfrey N. Hounsfield
发明人： Godfrey N. Hounsfield
IPC分类号： A61B6/03 , G03B41/16
CPC分类号： A61B6/4447 , A61B6/032 , A61B6/4021 , A61B6/4035
摘要： In a computerized tomographic apparatus for medical radiographic purposes, high definition information is sometimes required in respect of a region inside the body. It is therefore necessary to subject that region to a considerable radiation dosage. This gives rise to difficulties of excessive dosage to the skin and other portions of the body surrounding said region. The invention provides an arrangement whereby radiation is projected through said region by way of different areas of the skin so as to provide the high definition information required for said region without subjecting the skin to excessive radiation dosage.
摘要翻译：在用于医学射线照相目的的计算机断层摄影装置中，有时需要关于身体内的区域的高清晰度信息。因此，有必要使该区域具有相当大的辐射剂量。这导致了对周围所述区域的皮肤和身体的其它部分的过度剂量的困难。本发明提供一种布置，其中辐射通过皮肤的不同区域投射穿过所述区域，以便提供所述区域所需的高清晰度信息而不使皮肤过度辐射剂量。

36. 发明授权

US4099059A Tomographic apparatus for producing transverse layer images 失效
标题翻译：用于生产横向图像的图像设备
公开(公告)号：US4099059A
公开(公告)日：1978-07-04
申请号：US776767
申请日：1977-03-11
申请人： Walter Distler
发明人： Walter Distler
IPC分类号： A61B6/03 , A61B6/04 , A61B6/00 , G03B41/16
CPC分类号： A61B6/4447 , A61B6/04 , A61B6/0471
摘要： The illustrated embodiment shows a patient supporting device for tomographic apparatus comprising two patient supports for cooperation in moving a patient through the apparatus by means of synchronously operated conveyors, the supports having a slight space therebetween to avoid interference with the scanning beam, and the confronting edges of the supports which provide the gap accommodating the scanning beam being shiftable as the housing is tilted in opposite longitudinal directions so that the gap is always in alignment with the plane of the scanning beam. Advantageously one patient support may be disengageable from the housing so as to be removable from the housing aperture and then vertically movable to a convenient level for receiving a patient.

37. 发明授权

US4075700A Information display arrangements 失效
标题翻译：信息显示安排
公开(公告)号：US4075700A
公开(公告)日：1978-02-21
申请号：US703004
申请日：1976-07-06
申请人： Alan George Blay
发明人： Alan George Blay
IPC分类号： A61B6/03 , G06F3/033 , G06T11/00 , G01T1/16 , G08C21/00
CPC分类号： A61B6/4447 , A61B6/032 , A61B6/4085 , G06F3/033 , Y10S378/901
摘要： The data derived from a computerized axial tomographic apparatus in respect of a number of slices through a body are processed to produce a representation of the variation of absorption of X-rays over each slice. The representations are operated upon individually to identify areas which are of reduced interest and/or which are obscuring regions of especial interest. This having been done, the representations for all the slices are correlated to produce a pseudo three-dimensional display of part of the body with the identified areas being displayed with reduced or zero intensity as compared with other areas. Alternatively, the identified and other areas can be represented in different colors.

38. 发明授权

US3922552A Diagnostic X-ray systems 失效
标题翻译：诊断X射线系统
公开(公告)号：US3922552A
公开(公告)日：1975-11-25
申请号：US44304274
申请日：1974-02-15
申请人： LEDLEY ROBERT S
发明人： LEDLEY ROBERT S
IPC分类号： G01N23/04 , A61B20060101 , A61B6/00 , A61B6/02 , A61B6/03 , A61B6/06 , A61B6/08 , A61B6/10 , G01T1/164 , G01T1/20
CPC分类号： A61B6/4071 , A61B6/00 , A61B6/06 , A61B6/08 , A61B6/10 , A61B6/4447 , A61B6/501 , G01T1/164
摘要： A machine for examining the interior of a patient which includes a movable support for the patient, a frame having an opening adapted to circumscribe the patient, a shutter assembly, an X-ray beam source mounted on one side of the opening with a detector unit mounted on the opposite side of the opening such that a beam emitted by the source passes through the patient prior to reception by the detector. The machine includes mechanisms for rotating the framework about the patient while there is a relative translational movement of the X-ray source and receptor relative thereto. The apparatus also includes mechanism for tilting the framework such that other-than-vertical planes may be examined. The opening of the machine is sufficiently large to receive a human body and eliminates the requirement of water bags and other such paraphernalia commonly associated with equipment of this type.
摘要翻译：一种用于检查患者内部的机器，其包括用于患者的可移动支撑件，具有适于围绕患者的开口的框架，快门组件，安装在开口的一侧上的X射线束源，具有检测器单元安装在开口的相对侧，使得由源发射的光束在被检测器接收之前通过患者。该机器包括用于围绕患者转动框架的机构，同时存在相对于其的X射线源和受体的相对平移运动。该装置还包括用于使框架倾斜以使得可以检查不同于垂直平面的机构。机器的开口足够大以接收人体，并且消除了通常与这种设备相关联的水袋和其它这种用具的要求。

39. 发明申请

US20190029612A1 SELF-CONTAINED LOW COST CT SYSTEMS WITH INTEGRATED DRIVE SYSTEM 审中-公开
公开(公告)号：US20190029612A1
公开(公告)日：2019-01-31
申请号：US16074441
申请日：2017-04-11
申请人： Dedicated2Imaging, LLC
发明人： Eric M. Bailey , Andrew Tybinkowski
IPC分类号： A61B6/03 , A61B6/00 , A61B6/04
CPC分类号： A61B6/035 , A61B6/0407 , A61B6/0457 , A61B6/4411 , A61B6/4435 , A61B6/4447
摘要： New and improved CT imaging systems are presented which are low cost, fully self-contained and easily installed/used. Example improvements include implementation of an integrated and self-contained drive system for moving a scanner component relative to a fixed or static platform/base which also acts as an imaging table. The CT imaging system is also greatly simplified to improve ease of use and to reduce cost.

40. 发明申请

US20180304098A1 DUAL-AXIS RING GANTRY RADIOTHERAPY SYSTEMS 审中-公开
公开(公告)号：US20180304098A1
公开(公告)日：2018-10-25
申请号：US15494046
申请日：2017-04-21
申请人： Varian Medical Systems, Inc.
发明人： David Humber , Josh Star-Lack , Stanley Mansfield , Ross Hannibal
IPC分类号： A61N5/10 , A61B6/03 , A61B6/00
CPC分类号： A61N5/1037 , A61B6/035 , A61B6/4085 , A61B6/4441 , A61B6/4447 , A61B6/547 , A61N5/1049 , A61N5/1082 , A61N2005/1059 , A61N2005/1061 , A61N2005/1089
摘要： A radiation system includes a radiation source providing therapeutic radiation, a first gantry supporting a second gantry carrying the radiation source. The first gantry is rotatable about a first axis passing through an isocenter, thereby allowing the radiation source to aim therapeutic radiation at a target volume from a plurality of locations in a first plane. The second gantry carrying the radiation source is rotatable about a second axis passing through the isocenter non-parallel with the first axis, thereby allowing the radiation source to aim therapeutic radiation at the target volume from a plurality of locations in a second plane non-coplanar with the first plane.

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