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1. 发明申请

US20060177002A1 Methods and systems for helical overscan reduction 有权
公开(公告)号：US20060177002A1
公开(公告)日：2006-08-10
申请号：US11053801
申请日：2005-02-08
申请人： Thomas Toth , Brian Grekowicz
发明人： Thomas Toth , Brian Grekowicz
IPC分类号： G21K1/04
CPC分类号： A61B6/032 , A61B6/027 , A61B6/06
摘要： Methods, apparatus and systems for controlling x-ray exposure during a scan with a computed tomography system are provided. The system includes an x-ray source, a collimator, and a detector array. The collimator includes a first cam configured to shutter an x-ray fan beam, generated by the x-ray source, in a first direction, a second cam located on an opposite side of a focal point of the x-ray source from the first cam, the second cam configured to shutter the x-ray fan beam in a second direction, the second direction being opposite from the first direction, and a cam drive configured to position at least one of the first cam and the second cam during the scan.

2. 发明申请

US20070078336A1 METHOD AND APPARATUS OF MULTI-ENERGY IMAGING 失效
标题翻译：多能量成像的方法与装置
公开(公告)号：US20070078336A1
公开(公告)日：2007-04-05
申请号：US11465947
申请日：2006-08-21
申请人： Thomas Toth
发明人： Thomas Toth
IPC分类号： A61B5/05
CPC分类号： A61B6/4035 , A61B6/032 , A61B6/405 , A61B6/482 , G21K1/10
摘要： The present invention is directed to a method and apparatus of multi-energy data acquisition. An imaging system is also provided and includes a number of HF electromagnetic energy filters. The filters include at least a first and a second filter wherein the first filter is positioned in a path of HF electromagnetic energy when an HF electromagnetic energy source is energized to a first voltage and the second filter is positioned in the path of HF electromagnetic energy when the HF electromagnetic energy source is energized to a second voltage.
摘要翻译：本发明涉及多能数据采集的方法和装置。还提供了一种成像系统，并且包括多个HF电磁能量滤波器。滤波器包括至少第一滤波器和第二滤波器，其中当HF电磁能量源被激励到第一电压并且第二滤波器位于HF电磁能的路径中时，第一滤波器位于HF电磁能的路径中， HF电磁能源被激励到第二电压。

3. 发明授权

US06963670B2 CT dose reduction filter with a computationally efficient implementation 失效
标题翻译： CT剂量减少过滤器具有计算有效的实现
公开(公告)号：US06963670B2
公开(公告)日：2005-11-08
申请号：US09990030
申请日：2001-11-21
申请人： Gopal B. Avinash , Thomas Toth
发明人： Gopal B. Avinash , Thomas Toth
IPC分类号： G06T5/00 , G06K9/40
CPC分类号： G06T5/002 , G06T5/50 , G06T7/0012 , G06T2207/10081 , G06T2207/20012 , G06T2207/20016 , G06T2207/20192 , G06T2207/30004
摘要： A technique for reducing noise in pixel images includes modifying initial image data to prevent subsequent image data loss, shrinking the modified image, processing the shrunken image with known segmentation-based filtering techniques which identify and differentially processing structures within the image. After processing, the shrunken image is enlarged to the dimensions of the initial data and subsequently processed to correct intensity irregularities and to preserve CT numbers. The resulting technique is versatile and provides greatly improved computational efficiency while maintaining image quality, allowing for dose reduction during imaging.
摘要翻译：用于降低像素图像中的噪声的技术包括修改初始图像数据以防止随后的图像数据丢失，缩小修改的图像，使用已知的基于分割的滤波技术来处理缩小的图像，该技术识别和差异地处理图像内的结构。处理后，将缩小的图像放大到初始数据的尺寸，随后处理以校正强度不规则并保留CT数。所产生的技术是通用的并且在保持图像质量的同时提供大大提高的计算效率，从而允许成像期间的剂量减少。

4. 发明申请

US20050089135A1 System and method of x-ray flux management control 有权
标题翻译： x射线通量管理控制系统与方法
公开(公告)号：US20050089135A1
公开(公告)日：2005-04-28
申请号：US10765582
申请日：2004-01-27
申请人： Thomas Toth , David Hoffman
发明人： Thomas Toth , David Hoffman
IPC分类号： A61B6/03 , H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： A61B6/032 , A61B6/4035 , A61B6/4241 , A61B6/4488 , A61B6/469 , A61B6/488 , A61B6/544 , A61B6/583
摘要： A system and method of diagnostic imaging is provided that includes determining a position of a subject in a scanning bay and tailoring x-ray attenuation such that the specific position of the subject is taken into consideration. The present invention automatically selects a proper attenuation filter configuration, corrects patient centering, and corrects noise prediction errors, thereby increasing dose efficiency and tube output.
摘要翻译：提供了诊断成像的系统和方法，其包括确定扫描间隔中的对象的位置并调整x射线衰减，使得考虑对象的特定位置。本发明自动选择适当的衰减滤波器配置，校正患者居中，并且校正噪声预测误差，从而提高剂量效率和管输出。

5. 发明申请

US20050074085A1 Methods and apparatus for dynamical helical scanned image production 有权
标题翻译：动态螺旋扫描图像制作方法与装置
公开(公告)号：US20050074085A1
公开(公告)日：2005-04-07
申请号：US10680688
申请日：2003-10-07
申请人： Jiang Hsieh , Eugene Williams , Thomas Toth
发明人： Jiang Hsieh , Eugene Williams , Thomas Toth
IPC分类号： A61B5/055 , A61B6/03 , G01N23/04 , G06T1/00 , G21K1/12 , A61B6/00 , G01N23/00 , H05G1/60
CPC分类号： A61B6/032 , A61B5/055 , A61B6/027 , G01N23/046 , G01N2223/419 , G01N2223/612 , Y10S378/901
摘要： Some configurations of the present invention thus provide a method for producing images of an object. The method includes dynamically helically scanning an object on a moving table utilizing a scanning imaging system. During the scan, projection views of the object are acquired and stored together with corresponding table locations. A plane for reconstruction of an image of the object is selected. The stored table locations are used to determine geometric variables applicable to the stored projection views; and the stored projection views are filtered and backprojected utilizing the geometrical variables to reconstruct an image of the object at the reconstruction plane.
摘要翻译：因此，本发明的一些结构提供了一种用于产生物体的图像的方法。该方法包括利用扫描成像系统动态地螺旋扫描移动台上的物体。在扫描期间，获取对象的投影视图并与对应的表位置一起存储。选择用于重建对象的图像的平面。存储的表位置用于确定适用于存储的投影视图的几何变量; 并且利用几何变量对所存储的投影视图进行滤波和反投影，以重构在重构平面处的对象的图像。

6. 发明授权

US5131535A Electrical device transport medium 失效
标题翻译：电气设备运输介质
公开(公告)号：US5131535A
公开(公告)日：1992-07-21
申请号：US666559
申请日：1991-03-07
申请人： Bruce O'Connor , Steve Swendrowski , Thomas Toth
发明人： Bruce O'Connor , Steve Swendrowski , Thomas Toth
IPC分类号： H05K13/00
CPC分类号： H05K13/0084 , H01L2221/68313
摘要： A transport medium for orderly, in-process transportation of assembled electrical devices during backend processing. A carrier tray is comprised of a plurality of carrier units held in coplanar relationship by a frame. Preferably the carrier units are polyethersulfone inserts latchable into a coordinate matrix of carrier unit holes defined by a metallic sheet. Each carrier unit carries one or more electrical devices in device seats which expose a top and a bottom of each device sufficiently to eliminate any necessity for removing the devices from the medium during all backend processing. Each carrier unit has a standardized perimeter but a core which is adapted to a particular device size and form, and there can be as many different carrier units as there are different device forms and sizes, but all carrier units fit into a standard carrier unit hole. The frames and carrier units are robotically manipulable. Each tray, each carrier unit and each device in a carrier unit are uniquely identifiable by a combination of bar code indicia on the frame and a series of indexing holes along the frame perimeter and centered on each line of carrier units.
摘要翻译：用于在后端处理期间有组织的电气设备的有序的在线运输的运输介质。载体托架由通过框架保持为共面关系的多个载体单元组成。优选地，载体单元是可锁定到由金属片限定的载体单位孔的坐标矩阵中的聚醚砜插入物。每个承载单元承载设备座中的一个或多个电气设备，其充分暴露每个设备的顶部和底部，以消除在所有后端处理期间从介质中移除设备的任何必要性。每个载体单元具有标准化的周边，但是具有适于特定装置尺寸和形状的芯，并且可以具有与不同的装置形式和尺寸一样多的不同的载体单元，但是所有的载体单元适合于标准载体单元孔。框架和托架单元是可机械操作的。载体单元中的每个托盘，每个载体单元和每个装置可以通过框架上的条形码标记和沿着框架周边的一系列分度孔并且以每行载体单元为中心的组合来唯一地识别。

7. 发明申请

US20070081148A1 Method and system for measuring an alignment of a detector 有权
标题翻译：用于测量检测器对准的方法和系统
公开(公告)号：US20070081148A1
公开(公告)日：2007-04-12
申请号：US11230001
申请日：2005-09-19
申请人： Edward Chao , Thomas Toth , Tanvi Kachhy , Bruce Dunham , Abdelaziz Ikhlef
发明人： Edward Chao , Thomas Toth , Tanvi Kachhy , Bruce Dunham , Abdelaziz Ikhlef
IPC分类号： G01B11/26 , G01B11/00
CPC分类号： A61B6/587 , A61B6/032 , A61B6/06 , Y10S378/901
摘要： A method for measuring an alignment of a detector is described. The method includes determining, by a processor, the alignment of the detector with respect to a collimated radiation beam. The determination of the alignment is based on a plurality of signals from a first cell of the detector and a second cell of the detector, and is independent of a shape of the collimated radiation beam.
摘要翻译：描述了用于测量检测器的对准的方法。该方法包括由处理器确定检测器相对于准直辐射束的对准。对准的确定基于来自检测器的第一单元和检测器的第二单元的多个信号，并且独立于准直辐射束的形状。

8. 发明申请

US20050259784A1 Methods for spectrally calibrating CT imaging apparatus detectors 有权
标题翻译：频谱校准CT成像装置检测器的方法
公开(公告)号：US20050259784A1
公开(公告)日：2005-11-24
申请号：US10850009
申请日：2004-05-20
申请人： Xiaoye Wu , Neil Bromberg , Alexander Kolker , Piero Simoni , Thomas Toth
发明人： Xiaoye Wu , Neil Bromberg , Alexander Kolker , Piero Simoni , Thomas Toth
IPC分类号： A61B6/00 , A61B6/03 , G01N23/00 , G21K1/12 , H05G1/60
CPC分类号： A61B6/583 , A61B6/032 , A61B6/585
摘要： A method for calibrating a computed tomographic imaging apparatus having a gantry, a radiation source operable at a plurality of kVp's, and a detector array having a plurality of detector elements includes using a system detection function to estimate signals of each detector element that would have been detected through air and through a given thickness of water to determine estimated datasets. The estimated datasets are used to determine data pair sets each comprising a normalized water projection value and an ideal projection value for each detector element. The method further includes determining and storing a representation of a mapping function of the normalized water projections values to the ideal projection values in a memory of the computed tomographic imaging apparatus as a spectral calibration of the computed tomographic imaging apparatus.
摘要翻译：一种用于校准具有台架的计算机断层成像设备的方法，可在多个kVp处操作的辐射源以及具有多个检测器元件的检测器阵列的方法包括使用系统检测功能来估计已经被检测到的每个检测器元件的信号通过空气和通过给定厚度的水检测以确定估计的数据集。估计的数据集用于确定每个包括每个检测器元件的归一化水投影值和理想投影值的数据对集合。该方法还包括将计算机断层成像设备的存储器中的归一化水投影值的映射函数的映射函数确定和存储为理想投影值，作为计算机断层成像设备的光谱校准。

9. 发明申请

US20050089138A1 System and method of determining a center of mass of an imaging subject for x-ray flux management control 失效
标题翻译：用于确定用于x射线通量管理控制的成像对象的质心的系统和方法
公开(公告)号：US20050089138A1
公开(公告)日：2005-04-28
申请号：US10765583
申请日：2004-01-27
申请人： Thomas Toth , David Hoffman
发明人： Thomas Toth , David Hoffman
IPC分类号： A61B6/03 , G21K1/12 , A61B6/00 , G01N23/00 , H05G1/60
CPC分类号： A61B6/032 , A61B6/4035 , A61B6/4241 , A61B6/4488 , A61B6/469 , A61B6/488 , A61B6/544 , A61B6/583
摘要： A system and method of diagnostic imaging is provided that includes positioning a subject in a scanning bay, comparing a center of mass of the subject to a reference point, and repositioning the subject in the scanning bay to reduce a difference in position between the center of mass of the subject and the reference point. The present invention automatically selects a proper attenuation filter configuration, corrects patient centering, and corrects noise prediction errors, thereby increasing dose efficiency and tube output.
摘要翻译：提供了诊断成像的系统和方法，其包括将被摄体定位在扫描间隔中，将被摄体的质心与参考点进行比较，以及重新定位扫描间隔中的被摄体以减少位于第受试者的质量和参考点。本发明自动选择适当的衰减滤波器配置，校正患者居中，并且校正噪声预测误差，从而提高剂量效率和管输出。

10. 发明申请

US20050031084A1 Method and apparatus of modulating the filtering of radiation during radiographic imaging 有权
标题翻译：在射线成像期间调节辐射过滤的方法和装置
公开(公告)号：US20050031084A1
公开(公告)日：2005-02-10
申请号：US10935292
申请日：2004-09-07
申请人： Thomas Toth , Tsur Bernstein
发明人： Thomas Toth , Tsur Bernstein
IPC分类号： G21K3/00 , A61B6/03 , G21K1/10 , G21K5/02
CPC分类号： A61B6/032 , A61B6/4035 , A61B6/4488 , G21K1/10
摘要： The present invention includes a filtering apparatus for a CT imaging system or equivalently for an x-ray imaging system. The filtering apparatus may be translated along a first axis or a transverse axis to with respect to an attenuation pattern of a subject during an imaging session to reduce radiation exposure to anatomical regions of the subject sensitive to radiation exposure and/or regions from which data is not being acquired.
摘要翻译：本发明包括用于CT成像系统或等效地用于X射线成像系统的过滤装置。过滤装置可以在成像会话期间沿着第一轴或横向轴线相对于被摄体的衰减图案平移，以减少对辐射照射敏感的对象的解剖区域的辐射和/或数据是没有被收购

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