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公开(公告)号：US5982844A
公开(公告)日：1999-11-09
申请号：US948930
申请日：1997-10-10
CPC分类号： F16C19/50 , A61B6/035 , A61B6/4488 , F16C2300/14
摘要： In an improved computed tomography scanner drive system and bearing configuration, a gantry disk is sheaved about its perimeter such that the gantry is operable as a driven pulley rotatable about an object to be scanned. A motor assembly mounted to a stationary frame includes a similar sheaved drive pulley. A belt tensioned between the drive pulley of the motor assembly and the driven pulley of the gantry disk transfers rotational motion of the motor to drive the gantry rotationally about the object. In a preferred embodiment, the belt comprises a V-belt or poly-V-belt, and the bearing comprises a wire bearing located proximal to the gantry center of mass. In this manner, the present invention provides a simple and effective technique for driving the gantry about the object, providing sufficiently accurate angular positioning in a reliable and cost effective drive system.
摘要翻译： 在改进的计算机断层摄影扫描器驱动系统和轴承配置中，围绕其周边滑动龙门架，使得机架可操作为可围绕待扫描物体旋转的从动带轮。 安装到固定框架的马达组件包括类似的滑轮驱动滑轮。 张紧在马达组件的驱动皮带轮和龙门架盘的从动皮带轮之间的皮带传动电动机的旋转运动，以绕着物体旋转地驱动机架。 在优选实施例中，带包括V形带或多V形带，并且轴承包括位于台架中心附近的线轴承。 以这种方式，本发明提供了一种用于驱动靠近物体的机架的简单且有效的技术，在可靠和具有成本效益的驱动系统中提供足够精确的角度定位。
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公开(公告)号：US5937028A
公开(公告)日：1999-08-10
申请号：US948698
申请日：1997-10-10
CPC分类号： G01N23/046 , G01N2223/419
摘要： In a computed tomography (CT) scanner, an X-ray shield is mountable to a gantry for absorbing randomly scattered X-ray radiation. The shield is rotatable with the gantry disk for regulating the emission of X-ray radiation near its source. The shield is preferably lined with an energy-absorbent material to provide safe energy levels in the environment external to the system. By minimizing the surface area of the shield, the present system results in significant weight reduction and ease of installation over prior shielding systems.
摘要翻译： 在计算机断层摄影（CT）扫描仪中，X射线屏蔽可安装到龙门架上，用于吸收随机散射的X射线辐射。 盾构架可与台架盘旋转，用于调节靠近其源头的X射线辐射的发射。 屏蔽件优选地衬有能量吸收材料，以在系统外部的环境中提供安全的能量水平。 通过最小化屏蔽的表面积，本系统可以显着降低重量，并且在先前的屏蔽系统上安装方便。
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公开(公告)号：US06449340B1
公开(公告)日：2002-09-10
申请号：US09764798
申请日：2001-01-18
IPC分类号： G21K104
摘要： The present disclosure provides an adjustable collimator for collimating a beam of energy emitted from a focal spot of a beam source. The collimator is particularly intended for collimating an x-ray beam of a computed tomography scanner after the x-ray beam has passed through a patient being scanned. The collimator includes two elongated parallel plates arranged side by side to define a collimating slit between the plates. At least one of the plates is movably relative to the other plate for varying a width of the collimating slit. The collimator also includes a movable cam operatively arranged with respect to the at least one movable plate such that movement of the cam in a first direction causes the width of the collimating slit to increase, while movement of the cam in a second direction causes the width of the collimating slit to decrease.
摘要翻译： 本公开提供了一种用于准直从光源的焦斑发射的能量束的可调整准直器。 准直器特别用于在x射线束已经通过被扫描的患者之后准直计算机断层扫描仪的X射线束。 准直器包括并排布置的两个细长平行板，以在板之间限定准直缝隙。 板中的至少一个相对于另一个板可移动以改变准直缝的宽度。 准直器还包括相对于至少一个可移动板可操作地布置的可移动凸轮，使得凸轮在第一方向上的移动导致准直狭缝的宽度增加，同时凸轮在第二方向上的移动导致宽度 的准直缝减少。
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公开(公告)号：US06188743B1
公开(公告)日：2001-02-13
申请号：US09361452
申请日：1999-07-26
IPC分类号： G01N2300
CPC分类号： F16C19/50 , A61B6/035 , A61B6/4488 , F16C33/61 , F16C2300/14 , F16C2316/10 , G01N23/046 , G01N2223/419
摘要： In an improved computed tomography scanner drive system and bearing configuration, a gantry disk (30) is sheaved about its perimeter (65) such that the gantry is operable as a driven pulley rotatable about an object to be scanned. A motor (46) assembles mounted to a stationary frame (33) includes a similar sheaved drive pulley (80). A belt (64) tensioned between the drive pulley (80) of the motor assembly and the driven pulley of the gantry disk (30) transfers rotational motion of the motor to drive the gantry rotationally about the object. In a preferred embodiment, the belt comprises a V-belt or poly-V-belt (64), and the bearing comprises a wire bearing (59) located proximal to the gantry center of mass. In this manner, the present invention provides a simple and effective technique for driving the gantry about the object, providing sufficiently accurate angular positioning in a reliable and cost effective drive system. Various embodiments of an improved bearing system are also disclosed.
摘要翻译： 在改进的计算机断层扫描仪驱动系统和轴承配置中，围绕其周边（65）滑动龙门架（30），使得机架可操作为可围绕待扫描物体旋转的从动带轮。 安装到固定框架（33）的马达（46）组装件包括类似的滑轮驱动滑轮（80）。 张紧在马达组件的驱动滑轮（80）和龙门架盘（30）的从动皮带轮之间的皮带（64）转动马达的旋转运动，以绕机架旋转地驱动机架。 在优选实施例中，带包括V形带或多V形带（64），并且轴承包括位于台架中心附近的线轴承（59）。 以这种方式，本发明提供了一种用于驱动靠近物体的机架的简单且有效的技术，在可靠和具有成本效益的驱动系统中提供足够精确的角度定位。 还公开了改进的轴承系统的各种实施例。
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公开(公告)号：US06556657B1
公开(公告)日：2003-04-29
申请号：US09761495
申请日：2001-01-16
IPC分类号： G21K102
CPC分类号： G21K1/02
摘要： A method of manufacturing a collimator including providing a plate-like body, coating a predetermined portion of a surface of the body with an x-ray absorbing material, and machining at least one collimating slit through the coating and the plate-like body. According to one exemplary embodiment, the coating is applied through a thermal spray process. According to another exemplary embodiment, wire electrical discharge machining (EDM) is used to machine the collimating slits. A collimator manufactured in accordance with the presently disclosed method produces precise energy beam cross-sections, yet is less expensive to manufacture.
摘要翻译： 一种制造准直器的方法，包括提供板状体，用X射线吸收材料涂覆身体的表面的预定部分，以及通过涂层和板状体加工至少一个准直缝。 根据一个示例性实施方案，通过热喷涂方法施加涂层。 根据另一示例性实施例，使用线放电加工（EDM）来加工准直缝。 根据本公开的方法制造的准直器产生精确的能量束横截面，但制造成本较低。
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公开(公告)号：US06396902B2
公开(公告)日：2002-05-28
申请号：US09766373
申请日：2001-01-19
IPC分类号： G21K104
CPC分类号： G21K1/025
摘要： A collimator having slits of varied widths, wherein each slit includes a curved side profile having a common axis of curvature for providing a cross-section of an emitted beam of energy with a substantially uniform width when the common axis of curvature of the slit intersects a focal spot of a source of the beam. The collimator is curved about a rotation axis substantially normal to the common axis of curvature, such that rotating the collimator about the rotation axis will sequentially position the slits to collimate the emitted beam.
摘要翻译： 具有不同宽度的狭缝的准直器，其中每个狭缝包括弯曲的侧面轮廓，该弯曲的侧面轮廓具有共同的曲率轴线，用于当狭缝的共同的曲轴相交时提供具有基本均匀的宽度的发射的能量束的横截面 光源的焦点。 准直器围绕基本上垂直于共同的曲率轴线的旋转轴线弯曲，使得围绕旋转轴线旋转准直器将顺序地定位狭缝以准直发射的光束。
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公开(公告)号：US06337894B1
公开(公告)日：2002-01-08
申请号：US09764797
申请日：2001-01-18
IPC分类号： A61B603
CPC分类号： F16C33/61 , A61B6/035 , F16C19/183 , F16C2300/14 , F16C2316/10
摘要： The present disclosure provides a gantry of a CT scanner. The gantry includes an annular outer support having a radially inwardly facing, continuous circumferencial bearing chamber, an annular drum concentrically positioned within the outer support and having a continuous circumferential bearing lip radially extending into the bearing chamber of the outer support to define two circumferential bearing runs within the bearing chamber, and an annular disk extending radially inwardly from an inner circumferential surface of the drum. The disk is adapted to receive and support computed tomography components. The gantry also includes roller bearings in the bearing runs rotatably supporting the drum within the outer support, such that the drum and the disk are rotatable about a rotation axis of the drum.
摘要翻译： 本公开提供了CT扫描器的台架。 机架包括具有径向向内的连续圆周承载室的环形外部支撑件，同心地定位在外部支撑件内的环形鼓，并且具有径向延伸到外部支撑件的轴承室中的连续圆周轴承唇缘，以限定两个圆周方向轴承 在轴承室内，以及从滚筒的内圆周表面径向向内延伸的环形盘。 盘适于接收和支持计算机断层摄影部件。 龙门架还包括在轴承中的滚子轴承，其可旋转地支撑滚筒在外部支撑件内，使得滚筒和盘可绕滚筒的旋转轴线旋转。
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8.发明授权Mobile computerized tomography (CT) imaging system with frame/bearing/drum construction 有权具有框架/轴承/鼓结构的移动计算机断层摄影（CT）成像系统公开(公告)号：US07438471B2
公开(公告)日：2008-10-21
申请号：US11653705
申请日：2007-01-16
CPC分类号： A61B6/032 , A61B6/04 , A61B6/4405 , A61B6/4488 , A61B6/501 , G01N2223/419 , G01N2223/612
摘要： A CT imaging system comprising a frame having a center opening and a uni-body construction; a CT imaging unit mounted to the frame and comprising: a rotatable drum assembly rotatably mounted to the frame, concentric with the center opening, wherein at least one bearing is disposed between the rotatable drum assembly and the frame, and further wherein one race of the bearing is formed by a surface of the rotatable drum assembly and the other race of the bearing is formed by a surface of the frame; an X-ray tube mounted on the rotatable drum assembly; and an X-ray detector mounted on the rotatable drum assembly in alignment with the X-ray beam; and a transport mechanism mounted to the frame, the transport mechanism comprising a fine movement mechanism for moving the CT imaging unit precisely, relative to the patient, during scanning.
摘要翻译： 一种CT成像系统，包括具有中心开口和单体结构的框架; 安装在所述框架上的CT成像单元，包括：可旋转的滚筒组件，其可旋转地安装到所述框架上，与所述中心开口同心，其中至少一个轴承设置在所述可旋转滚筒组件和所述框架之间， 轴承由可旋转滚筒组件的表面形成，轴承的另一个滚道由框架的表面形成; 安装在可旋转滚筒组件上的X射线管; 以及X射线检测器，其安装在与X射线束对准的可旋转滚筒组件上; 以及安装到所述框架的传送机构，所述传送机构包括用于在扫描期间相对于患者精确地移动所述CT成像单元的精细移动机构。
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公开(公告)号：US06452998B2
公开(公告)日：2002-09-17
申请号：US09760626
申请日：2001-01-16
IPC分类号： H05G160
CPC分类号： A61B6/4447
摘要： A frame for an x-ray tomography device allows a gantry of the frame to be tilted with a minimum applied force. The frame includes a stand having two arms, and the annular gantry is positioned between the two arms and has an outer support pivotally mounted to the arms of the stand for tilting of the gantry about a tilt is of the gantry extending between the arms. An inner support is rotatable within and with respect to the outer support about a spin axis of the gantry extending substantially normal to the tilt axis. The inner support is adapted to hold x-ray tomography components for rotation therewith. The frame also includes a tilt guide secured to one of the gantry and the stand at an outermost circumference of the gantry, and a drive mechanism secured to the other of the gantry and the stand for applying a force to the tilt guide so that the gantry tilts about the tilt axis.
摘要翻译： 用于X射线断层摄影装置的框架允许以最小施加的力倾斜框架的台架。 框架包括具有两个臂的支架，并且环形门架位于两个臂之间，并且具有枢转地安装到支架的臂的外部支撑件，用于在支架之间延伸的台架的倾斜倾斜。 内部支撑件围绕基本上垂直于倾斜轴延伸的机架的旋转轴线在外部支撑件内并相对于外部支撑件旋转。 内部支撑件适于保持与其旋转的X射线断层成像部件。 该框架还包括一个倾斜导向件，该倾斜导向件固定在机架的一个台架和台架的台架的最外周;以及驱动机构，固定在台架和支架的另一个上，用于向倾斜导向件施加力， 倾斜倾斜轴。
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公开(公告)号：US06721388B2
公开(公告)日：2004-04-13
申请号：US10151270
申请日：2002-05-20
IPC分类号： H05G160
CPC分类号： A61B6/4447
摘要： A frame for an x-ray tomography device allows a gantry of the frame to be tilted with a minimum applied force. The frame includes a stand including two substantially upright arms, a gantry positioned between and pivotally mounted to the arms of the stand for tilting about a tilt axis extending between the arms, a tilt guide secured to one of the gantry and the stand, and at least two spaced-apart wheels, each wheel operatively engaging the tilt guide such that turning the wheels applies a force to the tilt guide so that the gantry tilts about the tilt axis.
摘要翻译： 用于X射线断层摄影装置的框架允许以最小施加的力倾斜框架的台架。 该框架包括一个支架，该支架包括两个基本上直立的臂，一个台架位于支架的臂之间，并可枢转地安装在支架的臂上，用于围绕在两臂之间延伸的倾斜轴线倾斜，一个倾斜导向件固定在一个台架和支架上， 至少两个间隔开的轮子，每个轮子可操作地接合倾斜导向器，使得转动车轮向倾斜导向件施加力，使得机架围绕倾斜轴线倾斜。
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