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公开(公告)号：US06442230B1
公开(公告)日：2002-08-27
申请号：US09527199
申请日：2000-03-16
IPC分类号： A61B600
摘要： A computed tomography system includes a gantry provided with an examination opening. The computed tomography system is provided with a position measuring system for measuring the position of the gantry. Preferably, an optical position measuring system which includes a camera unit is employed. The camera unit is suspended from a suspension point above the gantry.
摘要翻译： 计算机断层摄影系统包括设有检查口的龙门架。 计算机断层摄影系统设置有用于测量台架位置的位置测量系统。 优选地，采用包括相机单元的光学位置测量系统。 摄像机单元从机架上方的悬挂点悬挂。
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公开(公告)号：US5757877A
公开(公告)日：1998-05-26
申请号：US726709
申请日：1996-10-07
申请人： Jantje E. Wilting
发明人： Jantje E. Wilting
CPC分类号： A61B6/032 , A61B5/1076 , G01R33/56 , A61B6/4028 , G01R33/5608 , Y10S378/901
摘要： A density distribution of an object to be examined is obtained, for example by X-ray computed tomography or magnetic resonance imaging, and an accurate dimension of a detail of the object is derived from density values of a corresponding relevant detail of the density distribution and density values outside the relevant detail. Preferably, a reduction of a maximum density value of the relevant detail is compensated on the basis of density values outside the relevant detail.
摘要翻译： 例如通过X射线计算机断层摄影或磁共振成像获得要检查对象的密度分布，并且从密度分布的相应相关细节的密度值导出对象的细节的精确尺寸，并且 密度值在相关细节之外。 优选地，根据相关细节之外的密度值来补偿相关细节的最大密度值的减小。
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公开(公告)号：US06430432B1
公开(公告)日：2002-08-06
申请号：US09469457
申请日：1999-12-21
申请人： Jantje E. Wilting , Jan Timmer
发明人： Jantje E. Wilting , Jan Timmer
IPC分类号： A61B505
CPC分类号： G06T7/60 , G06T2207/10116 , Y10S128/916
摘要： The size of a detail of an object is derived from a data set of data values relating to the object. The data set assigns the data values to positions in a multidimensional space. A direction is selected in the multidimensional space. The spatial resolution of the data set is higher in the selected direction as compared to the spatial resolution in other directions. The size of the detail is derived from data values in the selected direction. The selected direction can extend along the line of intersection which intersects a scanning plane in which the data values are acquired and a transverse plane extending at right angles to the longitudinal axis of the detail. The data values can be acquired an X-ray computed tomography imaging system, a magnetic resonsance imaging system, or a 3D ultrasound imaging system.
摘要翻译： 来自与对象相关的数据值的数据集的对象的细节的大小。 数据集将数据值分配给多维空间中的位置。 在多维空间中选择方向。 与其他方向上的空间分辨率相比，数据集的空间分辨率在所选方向上更高。 细节的大小从所选方向的数据值导出。 所选择的方向可以沿着与其中获取数据值的扫描平面相交的交叉线和与细节的纵向轴线成直角延伸的横向平面延伸。 可以获取X射线计算机断层摄影成像系统，磁共振成像系统或3D超声成像系统的数据值。
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公开(公告)号：US6094468A
公开(公告)日：2000-07-25
申请号：US103735
申请日：1998-06-24
CPC分类号： A61B6/032 , H05G1/46 , A61B6/4028
摘要： A computer tomography device includes an X-ray source (1) and an X-ray detection system (3) for forming a number of density profiles of an object to be radiologically examined. A reconstruction unit (4) derives an image signal from the density profiles. A control system (20) adjusts the X-ray source (1) on the basis of a density value of the object and the control system is arranged to adjust the X-ray source on the basis of a part of the object to be examined. The control system is also arranged to adjust the X-ray source on the basis of a reference adjustment of the X-ray source. The reference adjustment is dependent on the part of the object to be examined.
摘要翻译： 计算机断层摄影装置包括用于形成要放射学检查的对象的多个密度分布的X射线源（1）和X射线检测系统（3）。 重建单元（4）从密度分布中导出图像信号。 控制系统（20）基于物体的密度值来调整X射线源（1），并且控制系统被布置为基于待检查对象的一部分来调整X射线源 。 控制系统还被设置为基于X射线源的参考调整来调整X射线源。 参考调整取决于被检查对象的部分。
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