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61. 发明授权

US5400378A Dynamic dose control in multi-slice CT scan 失效
标题翻译：多层CT扫描动态剂量控制
公开(公告)号：US5400378A
公开(公告)日：1995-03-21
申请号：US155045
申请日：1993-11-19
申请人： Thomas L. Toth
发明人： Thomas L. Toth
IPC分类号： A61B6/03 , H05G1/26 , H05G1/60 , A61B6/00
CPC分类号： A61B6/542 , A61B6/032 , A61B6/488 , H05G1/26 , H05G1/60 , A61B6/583
摘要： An x-ray CT system performs a multi-slice scan in which tube current is modulated to reduce the x-ray dose without increasing image noise. Scout data is acquired from which a relative attenuation function (RAF) is calculated to relate expected patient attenuation of the x-ray beam at each slice to a reference. Tube current commands (mA) for each slice are calculated from the RAF and used to acquire image data.
摘要翻译： X射线CT系统执行多片扫描，其中管电流被调制以减小X射线剂量而不增加图像噪声。计算Scout数据，从中计算相对衰减函数（RAF）以将每个切片处的x射线束的预期患者衰减与参考值相关联。每个切片的管电流指令（mA）由RAF计算，用于采集图像数据。

62. 发明授权

US10555716B2 Methods and apparatus for extended low contrast detectability for radiographic imaging systems 有权
公开(公告)号：US10555716B2
公开(公告)日：2020-02-11
申请号：US15597787
申请日：2017-05-17
申请人： David P. Rohler , Thomas L. Toth , Steven H. Izen , Arjun K. Maniyedath
发明人： David P. Rohler , Thomas L. Toth , Steven H. Izen , Arjun K. Maniyedath
IPC分类号： A61B6/03 , A61B6/00
摘要： Evaluating dose performance of a radiographic imaging system with respect to image quality using a phantom, a channelized hotelling observer module as a model observer, and a printer, a plaque, or an electronic display includes scanning and producing images for a plurality of sections of the phantom using the radiographic imaging system, wherein the plurality of sections represent a range of patient sizes and doses and wherein the sections of the phantom contain objects of measurable detectability. Also included is analyzing the images to determine detectability results for one or more of the contained objects within the images of the plurality of sections of the phantom, wherein the analyzing includes using a channelized hotelling observer (CHO) module as a model observer; and displaying, via the printer, the plaque, or the electronic display, a continuous detectability performance measurement function using the determined detectability results.

63. 发明申请

US20150282781A1 METHODS AND APPARATUS FOR EXTENDED LOW CONTRAST DETECTABILITY FOR RADIOGRAPHIC IMAGING SYSTEMS 有权
标题翻译：用于放射成像系统的扩展低对比度检测的方法和装置
公开(公告)号：US20150282781A1
公开(公告)日：2015-10-08
申请号：US14542698
申请日：2014-11-17
申请人： David P. Rohler , Thomas L. Toth , Steven H. Izen , Arjun K. Maniyedath
发明人： David P. Rohler , Thomas L. Toth , Steven H. Izen , Arjun K. Maniyedath
IPC分类号： A61B6/00 , A61B6/03
CPC分类号： A61B6/583 , A61B6/032 , A61B6/482 , A61B6/488 , A61B6/542 , A61B6/544 , A61B6/545 , A61B6/584 , A61B6/586
摘要： Evaluating dose performance of a radiographic imaging system with respect to image quality using a phantom, a channelized hotelling observer module as a model observer, and a printer, a plaque, or an electronic display includes scanning and producing images for a plurality of sections of the phantom using the radiographic imaging system, wherein the plurality of sections represent a range of patient sizes and doses and wherein the sections of the phantom contain objects of measurable detectability. Also included is analyzing the images to determine detectability results for one or more of the contained objects within the images of the plurality of sections of the phantom, wherein the analyzing includes using a channelized hotelling observer (CHO) module as a model observer; and displaying, via the printer, the plaque, or the electronic display, a continuous detectability performance measurement function using the determined detectability results.
摘要翻译：使用幻影，作为模型观察者的信道化热门观察者模块和打印机，斑块或电子显示器来评估放射线照相成像系统相对于图像质量的剂量性能，包括扫描和产生多个部分的图像使用放射照相成像系统的幻影，其中所述多个部分表示患者大小和剂量的范围，并且其中所述体模的部分包含可测量的可检测性的对象。还包括分析图像以确定体模的多个部分的图像内的一个或多个所包含的对象的可检测性结果，其中所述分析包括使用通道化的热门观察者（CHO）模块作为模型观察者; 以及使用所确定的可检测性结果，通过打印机显示所述牌或电子显示器的连续可检测性能测量功能。

64. 发明授权

US08891849B2 Extended low contrast detectability for radiographic imaging systems 有权
标题翻译：扩大的射线照相成像系统的低对比度检测能力
公开(公告)号：US08891849B2
公开(公告)日：2014-11-18
申请号：US13503721
申请日：2010-07-16
申请人： David P. Rohler , Arjun K. Maniyedath , Thomas L. Toth , Thomas E. Dechant , Steven H. Izen
发明人： David P. Rohler , Arjun K. Maniyedath , Thomas L. Toth , Thomas E. Dechant , Steven H. Izen
IPC分类号： G06K9/00 , A61B6/00 , A61B6/03
CPC分类号： A61B6/482 , A61B6/032 , A61B6/405 , A61B6/5252 , A61B6/542 , A61B6/545 , A61B6/583 , A61B6/587
摘要： Systems and methods for determining an extended low contrast detectability performance function for an operating range for a core operating mode of a radiographic imaging system using actual reconstructed images characterize the contrast performance of a radiographic imaging system over its operating range and for any patient size based on the off-line calibration, uses ordered pairs of flux index and contrast index for each scanned object to provide a contrast index for each protocol for each contrast set, and uses the ordered pairs of flux index and contrast index to determine an extended low contrast detectability performance function for the operating range of a radiographic imaging system. Extended low contrast detectability performance data compilation and methods of clinical use, and low contrast phantom configurations and methods of calibration are also disclosed.
摘要翻译：用于确定用于使用实际重建图像的射线照相成像系统的核心操作模式的操作范围的扩展的低对比度可检测性性能功能的系统和方法表征放射线照相成像系统在其工作范围内的对比度性能以及基于离线校准使用每个扫描对象的通量指数和对比度指数的有序对，为每个对比度集合的每个协议提供对比度指数，并使用有序的通量指数和对比度指数对来确定扩展的低对比度检测能力射线成像系统的工作范围的性能功能。还公开了扩展的低对比度可检测性能数据汇编和临床使用方法，以及低对比度幻影配置和校准方法。

65. 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。

66. 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。

67. 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。

68. 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。

69. 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。

70. 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

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