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61. 发明授权

US07688936B2 Method and apparatus of multi-energy imaging 失效
标题翻译：多能量成像方法与装置
公开(公告)号：US07688936B2
公开(公告)日：2010-03-30
申请号：US11465947
申请日：2006-08-21
申请人： Thomas L. Toth
发明人： Thomas L. Toth
IPC分类号： A61B6/00
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。

62. 发明授权

US07620142B1 Method and apparatus for reducing x-ray dosage in CT imaging prescription 有权
标题翻译：用于减少CT成像处方X射线剂量的方法和装置
公开(公告)号：US07620142B1
公开(公告)日：2009-11-17
申请号：US11275698
申请日：2006-01-25
申请人： Thomas L. Toth
发明人： Thomas L. Toth
IPC分类号： H05G1/46
CPC分类号： A61B6/4488 , A61B6/032 , A61B6/542 , A61B6/545 , A61B6/56 , G01R33/54 , Y10S707/99935 , Y10S707/99936
摘要： The present invention is directed to a networked scanner environment wherein each scanner is communicatable with one or more databases configured to store data associated with previously executed imaging sessions. The one or more databases may be queried by a user to determine, based on a set of user inputs, an historical evaluation of the prior imaging sessions conducted in accordance with scan parameters similar to the scan parameters of an imminent imaging session. The present invention includes a global database that is accessible by a series of remotely located imaging systems as well as includes one or more databases particular to a specific treatment facility housing one or more imaging scanners. The present invention is also applicable with a stand-alone imaging system having a database local to that particular imaging system for storing and accessing data associated with imaging sessions conducted on that particular imaging system.
摘要翻译：本发明涉及网络扫描器环境，其中每个扫描器可与配置成存储与先前执行的成像会话相关联的数据的一个或多个数据库通信。用户可以查询一个或多个数据库，以基于一组用户输入来确定根据类似于即将成像会话的扫描参数的扫描参数进行的先前成像会话的历史评估。本发明包括可由一系列远程定位的成像系统访问的全局数据库，并且包括特定于容纳一个或多个成像扫描仪的特定治疗设备的一个或多个数据库。本发明还可应用于具有本特定成像系统的数据库的独立成像系统，用于存储和访问与该特定成像系统上进行的成像会话相关联的数据。

63. 发明授权

US07076029B2 Method and apparatus of radiographic imaging with an energy beam tailored for a subject to be scanned 有权
公开(公告)号：US07076029B2
公开(公告)日：2006-07-11
申请号：US10605789
申请日：2003-10-27
申请人： Thomas L. Toth , Eric J. Tkaczyk , Jiang Hsieh
发明人： Thomas L. Toth , Eric J. Tkaczyk , Jiang Hsieh
IPC分类号： G21K3/00 , A61B6/03
CPC分类号： A61B6/4042 , A61B6/032 , A61B6/4035 , A61B6/4488 , G01T1/2985 , G21K1/04 , G21K1/10
摘要： A method and apparatus for tailoring the profile of an x-ray beam for radiographic imaging for a specific subject is disclosed. The invention includes a filter assembly having a pair of filters, each of which may be dynamically controlled by a motor assembly during data acquisition. The filters are positionable in the x-ray beam so as to shape the intensity profile of the x-ray beam. In one exemplary embodiment, the filters are dynamically positioned during CT data acquisition based on the shape of the subject. A method of determining the shape of the subject prior to CT data acquisition is also disclosed.

64. 发明授权

US06990171B2 System and method of determining a user-defined region-of-interest of an imaging subject for x-ray flux management control 有权
标题翻译：确定用于X射线通量管理控制的成像对象的用户定义的感兴趣区域的系统和方法
公开(公告)号：US06990171B2
公开(公告)日：2006-01-24
申请号：US10765617
申请日：2004-01-27
申请人： Thomas L. Toth , David M. Hoffman
发明人： Thomas L. Toth , David M. Hoffman
IPC分类号： 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 positioning a subject in an imaging device, performing at least one scout scan, and marking a user-defined region-of-interest. An attenuation characteristic of an attenuation filter is then automatically adjusted based on the user-defined region-of-interest. 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：提供了一种诊断成像的系统和方法，其包括将成像装置中的被摄体定位，执行至少一个侦察扫描，以及标记用户定义的感兴趣区域。衰减滤波器的衰减特性然后根据用户定义的感兴趣区域自动调整。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。

65. 发明授权

US06959106B1 Method and apparatus for detecting low contrast object in a diagnostic image 失效
标题翻译：用于检测诊断图像中的低对比度物体的方法和装置
公开(公告)号：US06959106B1
公开(公告)日：2005-10-25
申请号：US10063370
申请日：2002-04-16
申请人： Thomas L. Toth
发明人： Thomas L. Toth
IPC分类号： A61B6/00 , G01D18/00 , G06K9/00 , G06T7/00
CPC分类号： G06T7/0002 , A61B6/583 , A61B2560/0228 , G06T2207/30004
摘要： The present invention is directed to a method and apparatus of objectively testing the low contrast performance of an imaging system. Images of a uniform phantom and images of a low contrast detectability phantom are reconstructed. Thereafter, a group of pixels from an image of the uniform phantom are removed and replaced with a group of pixels from an image of the LCD phantom. A user or test observer is then prompted to identify which quadrant of the first phantom image contains a group of pixels from the LCD phantom. An accuracy of a user response is then determined and conveyed to the user. The present invention is applicable with a number of imaging modalities including computer tomography, magnetic resonance imaging, PET, ultrasound, and the like.
摘要翻译：本发明涉及一种客观测试成像系统的低对比度性能的方法和装置。重建均匀体模的图像和低对比度可检测性幻影的图像。此后，去除来自均匀体模的图像的一组像素，并从LCD幻像的图像中替换为一组像素。然后提示用户或测试观察者识别第一幻影图像的哪个象限包含来自LCD幻像的一组像素。然后确定用户响应的精确度并将其传达给用户。本发明可应用于计算机断层摄影，磁共振成像，PET，超声波等多种成像方式。

66. 发明授权

US06866419B2 Methods and apparatus for motion correction in imaging systems 有权
标题翻译：成像系统运动校正的方法和装置
公开(公告)号：US06866419B2
公开(公告)日：2005-03-15
申请号：US10249056
申请日：2003-03-12
申请人： Thomas L. Toth
发明人： Thomas L. Toth
IPC分类号： A61B6/00 , A61B6/03 , G01D18/00
CPC分类号： A61B6/032 , A61B6/4085 , A61B6/583
摘要： A method for facilitating a reduction in image artifacts includes determining at least one error due to motion of an imaging system relative to a scan space, scanning an object to acquire data with the imaging system, and correcting the acquired data using the determined error.
摘要翻译：一种促进图像伪影减少的方法包括：由于成像系统相对于扫描空间的运动而确定至少一个误差，扫描对象以使用成像系统获取数据，以及使用所确定的误差校正所获取的数据。

67. 发明授权

US06836535B2 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：US06836535B2
公开(公告)日：2004-12-28
申请号：US10064172
申请日：2002-06-18
申请人： Thomas L. Toth , Tsur Bernstein
发明人： Thomas L. Toth , Tsur Bernstein
IPC分类号： G21K100
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

68. 发明授权

US06535572B2 Methods and apparatus for compensating computed tomographic channel ganging artifacts 有权
标题翻译：用于补偿计算机断层摄影通道组合人造物的方法和装置
公开(公告)号：US06535572B2
公开(公告)日：2003-03-18
申请号：US09882770
申请日：2001-06-15
申请人： Jiang Hsieh , Jianying Li , Thomas L. Toth
发明人： Jiang Hsieh , Jianying Li , Thomas L. Toth
IPC分类号： A61B603
CPC分类号： A61B6/4028 , A61B6/032 , A61B6/5205
摘要： A CT imaging system and method are provided in which groups of adjacent detector elements of a detector array are ganged in an x-direction; and an object is scanned using the ganged groups of adjacent detector elements to acquire projection data. In one embodiment, to reduce degradation of images resulting from the ganged detector elements, an image of the object is reconstructed utilizing the acquired projection data and an adjusted iso-channel of the multislice detector array different from an iso-channel defined for scans performed without utilizing ganged groups of detector elements.
摘要翻译：提供了一种CT成像系统和方法，其中检测器阵列的相邻检测器元件组沿x方向组合; 并且使用相邻检测器元件的组合组来扫描对象以获取投影数据。在一个实施例中，为了减少由组合的检测器元件产生的图像的劣化，使用所获取的投影数据和多重检测器阵列的经调整的等通道来重建对象的图像，其不同于为没有利用组合的探测器元件。

69. 发明授权

US06490334B1 Methods and apparatus for high pitch helical computed tomography image reconstruction 失效
标题翻译：高螺距螺旋计算机断层扫描图像重建方法与装置
公开(公告)号：US06490334B1
公开(公告)日：2002-12-03
申请号：US09896957
申请日：2001-06-29
申请人： Sharon X. Wang , Thomas L. Toth , Piero U. Simoni , Stephen W. Metz , Jiang Hsieh
发明人： Sharon X. Wang , Thomas L. Toth , Piero U. Simoni , Stephen W. Metz , Jiang Hsieh
IPC分类号： A61B603
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4085 , A61B6/5205 , Y10S378/901
摘要： There is therefore provided, in one aspect, a method for imaging an object utilizing a computed tomographic (CT) imaging system having a rotating gantry, a multislice detector array on the rotating gantry and using at least n>1 rows of detector channels, and a radiation source on the rotating gantry configured to project a beam of radiation towards the multislice detector array through an object to be imaged. The method includes helically scanning the object with the CT imaging system at a pitch p>n to acquire projection data from the n rows of detector channels; applying a combined helical weight and conjugate weight to at least a portion of the acquired projection data to produce virtual projection data compensating for incomplete helical row data of the acquired projection data; and reconstructing an image of the object utilizing the acquired projection data and the virtual projection data.
摘要翻译：因此，在一个方面中，提供一种利用具有旋转机架的计算机断层摄影（CT）成像系统对成像进行成像的方法，在旋转机架上使用多层检测器阵列并且至少使用n> 1行检测器通道，以及旋转台架上的辐射源被配置成通过待成像的物体将辐射束投射到多层检测器阵列。该方法包括用间距p> n的CT成像系统螺旋扫描物体，以从n行检测器通道获取投影数据; 对所获取的投影数据的至少一部分应用组合的螺旋重量和共轭权重，以产生补偿所获取的投影数据的不完整螺旋行数据的虚拟投影数据; 以及使用所获取的投影数据和虚拟投影数据来重建对象的图像。

70. 发明授权

US06411677B1 Methods and apparatus for calibrating CT x-ray beam tracking loop 失效
标题翻译：用于校准CT X射线束跟踪循环的方法和装置
公开(公告)号：US06411677B1
公开(公告)日：2002-06-25
申请号：US09950261
申请日：2001-09-10
申请人： Thomas L. Toth , George E. Seidenschnur , Neil B. Bromberg
发明人： Thomas L. Toth , George E. Seidenschnur , Neil B. Bromberg
IPC分类号： G21K102
CPC分类号： A61B6/583 , A61B6/4021 , G01N23/046 , G01N2223/419 , G01N2223/612
摘要： The present invention is, in one embodiment, a method for determining tracking control parameters for positioning an x-ray beam of a computed tomography imaging system having a movable collimator positionable in steps and a detector array including a plurality of rows of detector elements. The method includes steps of obtaining detector samples at a series of collimator step positions while determining a position of a focal spot of the x-ray beam; determining a beam position for each detector element at each collimator step utilizing the determined focal spot positions, a nominal focal spot length, and geometric parameters of the x-ray beam, collimator, and detector array; and determining a calibration parameter utilizing information so obtained. For example, in determining a target beam position at which to maintain the x-ray beam, a detector element differential error is determined according to ratios of successive collimator step positions; and a target beam position is selected for an isocenter element in accordance with the determined element differential errors.
摘要翻译：本发明在一个实施例中是一种用于确定跟踪控制参数的方法，所述跟踪控制参数用于定位具有可定位的可移动准直仪的计算机断层摄影成像系统的X射线束和包括多行检测器元件的检测器阵列。该方法包括以下步骤：在确定X射线束的焦斑的位置的同时在一系列准直器步骤位置获得检测器样本; 使用所确定的焦点位置，标称焦点长度以及x射线束，准直仪和检测器阵列的几何参数来确定每个准直器步骤处的每个检测器元件的光束位置; 以及使用如此获得的信息来确定校准参数。例如，在确定维持X射线束的目标光束位置时，根据连续的准直仪台阶位置的比例来确定检测器元件差分误差; 并且根据确定的元件微分误差为等角点元件选择目标光束位置。

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