公开(公告)号：US06851851B2

公开(公告)日：2005-02-08

申请号：US09941250

申请日：2001-08-28

申请人： Andrew P. Smith ,  Jay A. Stein ,  Kevin E. Wilson ,  Richard E. Cabral ,  Remo Rossi ,  James D. Miller

发明人： Andrew P. Smith ,  Jay A. Stein ,  Kevin E. Wilson ,  Richard E. Cabral ,  Remo Rossi ,  James D. Miller

IPC分类号： A61B6/00 ,  A61B6/04 ,  A61B6/06 ,  A61B6/10 ,  H01J31/49

CPC分类号： A61B6/0457 ,  A61B6/06 ,  A61B6/105 ,  A61B6/4233 ,  A61B6/4291 ,  A61B6/4464 ,  A61B6/488 ,  A61B6/547 ,  A61B6/56 ,  A61B6/563 ,  A61B6/583 ,  A61B2560/0271

摘要： A digital, flat panel, two-dimensional x-ray detector moves reliably, safely and conveniently to a variety of positions for different x-ray protocols for a standing, sitting or recumbent patient. The system makes it practical to use the same detector for a number or protocols that otherwise may require different equipment, and takes advantage of desirable characteristics of flat panel digital detectors while alleviating the effects of less desirable characteristics such as high cost, weight and fragility of such detectors.

摘要翻译： 数字，平板，二维X射线检测器可靠地，安全和方便地移动到用于站立，坐着或卧床患者的不同x射线协议的各种位置。 该系统使得使用相同的检测器用于可能需要不同设备的数量或协议，并且利用平板数字检测器的期望特性，同时减轻不太理想的特性的影响，例如高成本，重量和脆弱性 这样的检测器。

公开(公告)号：US6102567A

公开(公告)日：2000-08-15

申请号：US649280

申请日：1996-05-17

申请人： Richard E. Cabral ,  Jay A. Stein

发明人： Richard E. Cabral ,  Jay A. Stein

IPC分类号： A61B6/00 ,  H05G1/02

CPC分类号： A61B6/4441 ,  A61B6/4233 ,  A61B6/4241 ,  A61B6/482 ,  A61B6/505

摘要： The present invention provides a system that reduces the complexity of existing dual energy x-ray equipment which typically requires more complicated mechanisms to measure bone density, to a system with a single axis of mechanical motion and with a patient providing repositioning motions. This configuration allows for a much more compact design and smaller equipment "footprint," thus taking up less floor space in examination rooms and allowing for multiple uses of one room. The system of the present invention eliminates the need for a patient support table which can affect x-ray transmission because of the thickness and construction of the table which are dictated by the weight of the patient. The system includes a main cabinet or gantry enclosure which contains an x-ray source and ancillary support electronics and mechanisms. An extension arm positions a detector assembly on a side of the patient opposite to the source assembly and fixes the distance between the source and detector assemblies. The source and detector assemblies are capable of making dual energy bone measurements. The source assembly, detector assembly and extension arm form a gantry and the source assembly and detector assembly are confined to move in unison in a vertical scanning motion. A drive mechanism in conjunction with a precision guide rail provides a stable, smooth vertical scanning motion of the gantry. A counter balance system is provided to reduce the forces required to move the gantry. In addition, the extension arm may either fold or retract into the main cabinet to reduce the system volume when not in use.

摘要翻译： 本发明提供了一种降低现有双能量x射线设备的复杂性的系统，其通常需要更复杂的机构来测量骨密度，具有单轴机械运动的系统，并且患者提供重新定位运动。 这种配置允许更紧凑的设计和更小的设备“占地面积”，从而占用较少的检查室的占地面积，并允许一个房间的多次使用。 本发明的系统消除了由于由患者的重量所决定的桌子的厚度和结构，可能影响x射线透射的患者支撑台的需要。 该系统包括一个主机柜或龙门架，其中包含一个x射线源和辅助支持电子设备和机构。 延伸臂将检测器组件定位在与源组件相对的一侧上，并固定源和检测器组件之间的距离。 源和检测器组件能够进行双能量骨测量。 源组件，检测器组件和延伸臂形成龙门架，并且源组件和检测器组件被限制为在垂直扫描运动中一致地移动。 与精密导轨结合的驱动机构提供了台架的稳定，平滑的垂直扫描运动。 提供了平衡系统以减少移动机架所需的力。 此外，延伸臂可以折叠或缩回主机柜，以在不使用时减小系统体积。

公开(公告)号：US5838765A

公开(公告)日：1998-11-17

申请号：US486368

申请日：1995-06-07

申请人： Russell J. Gershman ,  Richard E. Cabral ,  Noah Berger ,  Jay A. Stein

发明人： Russell J. Gershman ,  Richard E. Cabral ,  Noah Berger ,  Jay A. Stein

IPC分类号： A61B6/00 ,  A61B6/04 ,  A61B6/06 ,  A61B6/08 ,  G21K1/10 ,  G21K5/10

CPC分类号： A61B6/06 ,  A61B6/0421 ,  A61B6/0457 ,  A61B6/08 ,  A61B6/482 ,  A61B6/488 ,  A61B6/505 ,  G21K1/10 ,  A61B6/405 ,  A61B6/548 ,  A61B6/583

摘要： A whole body x-ray bone densitometry system includes a table extending parallel to a Y-axis of an XYZ coordinate system for supporting a patient at a patient position; an x-ray source for emitting a narrow angle fan beam of x-rays to irradiate at any one time a scan line which is transverse to the Y-axis and is substantially shorter than the width of a body cross-section of a typical adult patient occupying the patient position. An x-ray detector is aligned with the source along a source-detector axis which is transverse to the Y-axis, for receiving x-rays from the source within the angle of the fan beam after passage thereof through the patient position. The detector has a number of detecting elements arranged along a direction transverse to the Y-axis and to the source-detector axis. A source-detector support on which the source and detector are mounted at opposite sides of the patient position is coupled with a scanning mechanism moving at least one of the patient table and the source-detector support relative to the other to scan the patient position with the narrow angle fan beam in successive scans parallel to the Y-axis in which the source-detector axis is at different angles relative to the patient position as between different ones of successive scans, but in each of the successive scans, an origin of the fan beam in the source is at the same vertical distance from the patient table. The distance between the fan beam origin and the table may be selectively varied between scan passes, in order to vary scan pass magnification.

摘要翻译： 全身x射线骨密度测定系统包括平行于XYZ坐标系的Y轴延伸的表，用于将病人支撑在患者位置; x射线源，用于发射X射线的窄角扇形束，以在任何一个时刻照射横向于Y轴的扫描线，并且基本上比典型成年人的身体横截面的宽度短 患者占据病人的位置。 X射线检测器沿着横向于Y轴的源 - 检测器轴与源对准，用于在通过患者位置之后在扇形束的角度内从源收到X射线。 检测器具有沿横向于Y轴和源检测器轴线的方向布置的多个检测元件。 源和检测器安装在患者位置的相对侧处的源检测器支撑件与扫描机构联接，扫描机构相对于另一个移动患者台和源检测器支撑件中的至少一个，以扫描患者位置， 平行于Y轴的连续扫描中的窄角风扇光束，其中源 - 检测器轴线相对于患者位置处于不同的连续扫描之间的不同角度，但是在每个连续扫描中， 源中的扇形光束与患者台处于相同的垂直距离。 可以在扫描通过之间选择性地改变风扇光束原点和台之间的距离，以便改变扫描通过倍率。

公开(公告)号：US5715820A

公开(公告)日：1998-02-10

申请号：US465736

申请日：1995-06-06

申请人： Jay A. Stein ,  Noah Berger ,  Richard E. Cabral

发明人： Jay A. Stein ,  Noah Berger ,  Richard E. Cabral

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

CPC分类号： A61B6/4441 ,  A61B6/482 ,  A61B6/505 ,  A61B6/5241 ,  A61B6/0457 ,  A61B6/405 ,  A61B6/548

摘要： The system of the present invention uses x-rays having a narrow fan beam to scan patients for bone density and soft tissue body composition measurement and imaging. In addition to single pass scanning of body parts such as the spine, hip and forearm, a method for multiple pass whole body scanning is provided. The system includes a movable scan table configured to support a patient and a C-arm associated with the table. The C-arm is configured to support an x-ray source in opposite to an x-ray detector at opposite sides of the patient. A scanning mechanism is provided to move the scan table and C-arm to scan the patient with overlapping adjacent x-ray fan beams in successive scan passes along the length of the patient. A scan pass combination scheme that blends areas of overlap is employed to compensate errors related to height dependency. The blending is performed according to the height of the part of patient scanned in the overlap and the distance from the edge of the scan pass.

摘要翻译： 本发明的系统使用具有窄风扇束的x射线来扫描患者的骨密度和软组织体成分测量和成像。 除了对脊椎，臀部和前臂等身体部位进行单次扫描之外，还提供了多遍全身扫描的方法。 该系统包括可移动的扫描台，其构造成支撑患者和与该桌子相关联的C形臂。 C形臂被配置为在患者的相对侧处与X射线检测器相对的X射线源支撑。 提供扫描机构以移动扫描台和C臂以沿着患者长度的连续扫描通过扫描具有重叠的相邻x射线扇形束的患者。 采用混合重叠区域的扫描通过组合方案来补偿与高度相关性相关的错误。 根据在重叠中扫描的患者的部分的高度和与扫描通过的边缘的距离来进行混合。