公开(公告)号：US5657369A

公开(公告)日：1997-08-12

申请号：US428044

申请日：1995-04-25

申请人： Jay A. Stein ,  Steven Teta ,  Richard E. Cabral ,  Tracy L. Ramsdell ,  Tina LeFebvre ,  Russell J. Gershman

发明人： Jay A. Stein ,  Steven Teta ,  Richard E. Cabral ,  Tracy L. Ramsdell ,  Tina LeFebvre ,  Russell J. Gershman

IPC分类号： A61B6/00 ,  A61B6/04 ,  A61B6/06 ,  A61B6/08 ,  G21K1/10 ,  G21K5/10 ,  H05G1/00

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： An x-ray bone densitometry system having an apparatus for positioning body parts is provided. The system includes a patient table having a length extending along a Y-axis and a width extending along an X-axis, a C-arm supporting an x-ray source at one side and an x-ray detector at an opposite side of the table, wherein the source and detector are aligned along a source-detector axis which is transverse to the Y-axis. The source is selectively energized and emits a fan beam of x-rays which conforms to a beam plane which is transverse to the Y-axis and contains the source-detector axis. A forearm positioner is removably supported on the table and includes an arm rest portion positioned at a selected distance along the X-axis from an edge of the table. A hand supporting member is configured to fit within the arm rest portion to maintain the position of a patient's hand in a predetermined shape when the source is energized.

摘要翻译： 提供了具有用于定位身体部位的装置的x射线骨密度测定系统。 该系统包括具有沿着Y轴延伸的长度和沿X轴延伸的宽度的患者台，支撑一侧的x射线源的C形臂和在一侧的X射线检测器 表格，其中源和检测器沿着横向于Y轴的源 - 检测器轴对齐。 源被选择性地通电并且发射符合垂直于Y轴并且包含源检测器轴线的束平面的X射线的扇形束。 前臂定位器可移除地支撑在工作台上，并且包括从桌子的边缘沿着X轴定位在选定距离的扶手部分。 手部支撑构件配置成装配在扶手部分内，以在源被激励时将患者的手的位置保持在预定的形状。

公开(公告)号：US6009147A

公开(公告)日：1999-12-28

申请号：US345069

申请日：1994-11-25

申请人： Jay A. Stein ,  Steven Teta ,  Donald Barry ,  Richard E. Cabral ,  Tracy L. Ramsdell ,  Tina LeFebvre ,  Noah Berger ,  Tom Richardson ,  Eric von Stetten ,  Howard P. Weiss ,  Thomas L. Kelly ,  Russell J. Gershman

发明人： Jay A. Stein ,  Steven Teta ,  Donald Barry ,  Richard E. Cabral ,  Tracy L. Ramsdell ,  Tina LeFebvre ,  Noah Berger ,  Tom Richardson ,  Eric von Stetten ,  Howard P. Weiss ,  Thomas L. Kelly ,  Russell J. Gershman

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

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

摘要： A method of calibrating an ultrasound bone analysis apparatus having a pair of transducer assemblies. Each transducer assembly has a transducer and a coupling pad, and is movable relative to the other so that a face of each pad can be moved to a position in which they mutually contact and to a position where the faces contact body parts. The method according to the present application includes transmitting an ultrasound signal from one transducer and receiving a signal corresponding to the transmitted ultrasound signal through the other transducer when the transducer assemblies are in the first position and the second position. A time for the ultrasound signal to pass through the body part is determined, and a width of the body part based on positions of the transducers is determined. Then, using the time and width values a speed of sound of the ultrasound signal passing through the body part with squish compensation is calculated.

摘要翻译： 一种校准具有一对换能器组件的超声骨分析装置的方法。 每个换能器组件具有换能器和耦合垫，并且可相对于另一个移动，使得每个垫的表面可以移动到它们相互接触的位置和面接触身体部分的位置。 根据本申请的方法包括当换能器组件处于第一位置和第二位置时，从一个换能器发送超声信号并且通过另一个换能器接收与所发射的超声信号相对应的信号。 确定超声信号通过身体部位的时间，并且确定基于换能器的位置的身体部位的宽度。 然后，使用时间和宽度值计算通过身体部位的超声信号的声音的压缩补偿。

公开(公告)号：US5835562A

公开(公告)日：1998-11-10

申请号：US475404

申请日：1995-06-07

申请人： Tracy L. Ramsdell ,  Tina LeFebvre

发明人： Tracy L. Ramsdell ,  Tina LeFebvre

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

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

摘要： A medical radiological apparatus, such as an x-ray bone densitometry apparatus includes patient positioning aides for accurate patient placement and consistent positioning during a single scanning procedure, or during subsequent procedures. An optical crosshair device helps align the patient's spine along the Y-axis of the apparatus and the patient's hips along the X-axis of the apparatus, perpendicular to the spine. Spinal and forearm positioning aides help the patient maintain consistent, comfortable positions within scans. They also enable reproducibility of patient position in subsequent scans, so that scan results from one scan to another may be compared by a medical practitioner, with reasonable assurance that the respective scan results are not unduly compromised by inconsistent patient placement. The forearm positioning aide consistently places the forearm flat on the patient support table in a proper position parallel to the longitudinal table axis. The spinal positioning aide has diverging support wings which enable the patient to maintain elbows in a position off the table, in a manner which is not likely to cause spinal movement due to arm fatigue.

摘要翻译： 诸如x射线骨密度测定装置的医学放射学装置包括用于在单次扫描过程期间或在随后的过程期间准确的患者放置和一致定位的患者定位助听器。 光学十字准线装置有助于沿着设备的Y轴和患者的臀部沿装置的X轴垂直于脊柱对准患者的脊柱。 脊柱和前臂定位助手帮助患者在扫描中保持一致，舒适的位置。 它们还使得后续扫描中的患者位置的再现性能够使得从一个扫描到另一次扫描的扫描结果可以由医师进行比较，并且合理地保证相应的扫描结果不会被不一致的患者放置过度地损害。 前臂定位助手始终将前臂平面放置在病人支撑台上，平行于纵向工作台轴线的适当位置。 脊柱定位助手具有发散的支撑翼，其使得患者能够以不会由于手臂疲劳引起脊柱运动的方式将肘部保持在离开桌子的位置。

公开(公告)号：US5835555A

公开(公告)日：1998-11-10

申请号：US484489

申请日：1995-06-07

申请人： Donald Barry ,  Richard E. Cabral ,  Tracy L. Ramsdell

发明人： Donald Barry ,  Richard E. Cabral ,  Tracy L. Ramsdell

IPC分类号： A61B6/00 ,  A61B6/04 ,  A61B6/06 ,  A61B6/08 ,  G21K1/10 ,  G21K5/10 ,  G21K3/00

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

摘要： Radiological apparatus, such as a bone densitometry measurement system, utilizes a penetrating radiation source, such as an x-ray source. The apparatus has a multi-position attenuator mechanism for placement of different attenuating materials in the radiation beam. The mechanism includes a rack of attenuating materials which is translated across the radiation beam path by a drive mechanism, such as a linear motor. The mechanism preferably includes a controller for actuating the drive mechanism in response to operator command and monitoring which attenuating material crosses the beam path by way of position signals generated by a position encoder that is coupled to the controller. This attenuator mechanism allows attenuating materials to be stored within the radiological apparatus, enables operator selection of attenuating materials under automatic machine control and self-alignment of the material relative to the radiation beam. Spectral content and intensity of the penetrating radiation beam is modulated in a known an repeatable pattern by a modulating apparatus. In the preferred embodiment one or more concentric, rotating cylinders are interposed between the x-ray beam and the patient support table. Radiation attenuating materials are arrayed in a radial pattern within the rotating cylinders, so that the beam passes through a plurality of layers of attenuating materials. By controlling relative rotational speed of the rotating cylinders through a closed loop control system, a periodic, repetitive pattern of modulating apparent radiation beam intensity and spectral content can be established. The modulation apparatus is useful for dual-energy radiological scans, such as in bone densitometers.

摘要翻译： 诸如骨密度测量系统的放射学装置利用穿透辐射源，例如x射线源。 该装置具有用于在辐射束中放置不同衰减材料的多位置衰减器机构。 该机构包括通过诸如线性电动机之类的驱动机构在辐射束路径上平移的衰减材料架。 该机构优选地包括控制器，用于响应于操作员的指令并且监视哪个衰减材料通过耦合到控制器的位置编码器产生的位置信号而横穿光束路径来致动驱动机构。 这种衰减器机构允许衰减的材料被存储在放射学装置内，使得操作者可以在自动机器控制下材料相对于辐射束自动选择衰减材料并进行自对准。 通过调制装置以已知的可重复的图案调制穿透辐射束的光谱含量和强度。 在优选实施例中，一个或多个同心旋转的圆柱体插入在x射线束和患者支撑台之间。 辐射衰减材料以旋转圆柱体内的径向图案排列，使得光束通过多层衰减材料。 通过控制旋转圆柱体的相对旋转速度通过闭环控制系统，可以建立调制表观辐射束强度和光谱含量的周期性重复模式。 调制装置对于双能量放射学扫描是有用的，例如在骨密度计中。

公开(公告)号：US5717735A

公开(公告)日：1998-02-10

申请号：US686109

申请日：1996-07-24

申请人： Tracy L. Ramsdell ,  Tina LeFabvre

发明人： Tracy L. Ramsdell ,  Tina LeFabvre

IPC分类号： A61B6/00 ,  A61B6/04 ,  A61B6/06 ,  A61B6/08 ,  G21K1/10 ,  G21K5/10 ,  H05G1/00

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

摘要： A medical radiological apparatus, such as an x-ray bone densitometry apparatus includes patient positioning aides for accurate patient placement and consistent positioning during a single scanning procedure, or during subsequent procedures. An optical crosshair device helps align the patient's spine along the Y-axis of the apparatus and the patient's hips along the X-axis of the apparatus, perpendicular to the spine. Spinal and forearm positioning aides help the patient maintain consistent, comfortable positions within scans. They also enable repreducibility of patient position in subsequent scans, so that scan results from one scan to another may be compared by a medical practitioner, with reasonable assurance that the respective scan results are not unduly compromised by inconsistent patient placement. The forearm positioning aide consistently places the forearm flat on the patient support table in a proper position parallel to the longitudinal table axis. The spinal positioning aide has diverging support wings which enable the patient to maintain elbows in a position off the table, in a manner which is not likely to cause spinal movement due to arm fatigue.

摘要翻译： 诸如x射线骨密度测定装置的医学放射学装置包括用于在单次扫描过程期间或在随后的过程期间准确的患者放置和一致定位的患者定位助听器。 光学十字准线装置有助于沿着设备的Y轴和患者的臀部沿装置的X轴垂直于脊柱对准患者的脊柱。 脊柱和前臂定位助手帮助患者在扫描中保持一致，舒适的位置。 它们还使后续扫描中患者位置的重现性降低，从而可以由医师比较一次扫描到另一次扫描的扫描结果，并合理地保证相应的扫描结果不会因患者位置不一致而受到不适当的损害。 前臂定位助手始终将前臂平面放置在病人支撑台上，平行于纵向工作台轴线的适当位置。 脊柱定位助手具有发散的支撑翼，其使得患者能够以不会由于手臂疲劳引起脊柱运动的方式将肘部保持在离开桌子的位置。