公开(公告)号：US20090290686A1

公开(公告)日：2009-11-26

申请号：US12124355

申请日：2008-05-21

申请人： James Zhengshe Liu ,  Tiantian Zhang ,  Kenneth Scott Kump ,  Jingyi Liang ,  Chuande Liu ,  Kadri Nizar Jabri

发明人： James Zhengshe Liu ,  Tiantian Zhang ,  Kenneth Scott Kump ,  Jingyi Liang ,  Chuande Liu ,  Kadri Nizar Jabri

IPC分类号： G01R35/00 ,  H05G1/28

CPC分类号： H04N5/32 ,  H04N5/3577

摘要： The effects of electromagnetic interference (EMI) on X-ray image data is corrected by characterizing the EMI and processing the image data to subtract the EMI effects from the image data. The X-ray image data, along with offset data, are collected in a conventional manner, affected by EMI if present, and EMI-characterizing data is immediately collected thereafter by disabling rows of a digital detector (FET off). The EMI-characterizing data, then, is not affected by the presence of image data, and can be used to characterize the amplitude and frequency of the EMI. The EMI-characterizing data is assured of being in phase with the collected image and offset data due to its collection in the same image acquisition sequence immediately following the collection of image and offset data. Artifacts due to the presence of EMI are thus eliminated from reconstructed images based upon the corrected data.

摘要翻译： 电磁干扰（EMI）对X射线图像数据的影响通过表征EMI和处理图像数据来校正，以从图像数据中减去EMI效应。 X射线图像数据以及偏移数据以常规方式收集，受EMI影响（如果存在），并且EMI特征数据立即收集，此后通过禁用数字检测器（FET关闭）的行。 EMI表征数据然后不受图像数据的存在的影响，并且可以用于表征EMI的幅度和频率。 EMI特征数据被确保与收集的图像和偏移数据同步，这是由于其在收集图像和偏移数据之后的相同图像采集序列中的收集。 因此，由于存在EMI的人为因素基于校正数据而从重构图像中消除。

公开(公告)号：US07495228B1

公开(公告)日：2009-02-24

申请号：US11971533

申请日：2008-03-31

申请人： Douglas Albagli ,  Aaron Judy Couture ,  William Andrew Hennessy ,  Kenneth Scott Kump ,  Feng Gao ,  James Zhengshe Liu

发明人： Douglas Albagli ,  Aaron Judy Couture ,  William Andrew Hennessy ,  Kenneth Scott Kump ,  Feng Gao ,  James Zhengshe Liu

IPC分类号： H01L27/146

CPC分类号： H01L27/14663 ,  H01L27/14609 ,  H01L27/14636 ,  H04N5/357 ,  H04N5/374

摘要： A dual function detector device operates in either a normal operating mode or in an EMI correction mode to suppress effects of EMI within the detector. The detector device may be a flat panel x-ray detectors used in x-ray imaging systems. The device has a pixel architecture and panel read-out technique that enables real-time, high spatial frequency measurement of noise induced by electromagnetic radiation on a digital x-ray detector. The measurement can be used to calibrate the detector in real-time to attain artifact-free imaging in all environments, including those that contain temporally and spatially changing electromagnetic fields.

摘要翻译： 双功能检测器装置在正常操作模式或EMI校正模式下工作，以抑制EMI在检测器内的影响。 检测器装置可以是用于x射线成像系统中的平板X射线检测器。 该器件具有像素架构和面板读出技术，能够对数字X射线检测器上的电磁辐射引起的噪声进行实时，高空间频率测量。 该测量可用于实时校准检测器，以在所有环境中实现无伪像成像，包括那些包含时间和空间变化的电磁场的成像。

公开(公告)号：US20080224056A1

公开(公告)日：2008-09-18

申请号：US11687661

申请日：2007-03-18

申请人： James Zhengshe Liu ,  Kenneth Scott Kump ,  Habib Vafi

发明人： James Zhengshe Liu ,  Kenneth Scott Kump ,  Habib Vafi

IPC分类号： G01T1/24

CPC分类号： A61B6/4405 ,  A61B6/508

摘要： A method includes purposefully electromagnetically shielding a portable x-ray detector.

摘要翻译： 一种方法包括有目的地电磁屏蔽便携式x射线检测器。

公开(公告)号：US06827489B2

公开(公告)日：2004-12-07

申请号：US10003490

申请日：2001-11-01

申请人： Francois Serge Nicolas ,  Vincent S. Polkus ,  Kenneth Scott Kump ,  Remy Andre Klausz

发明人： Francois Serge Nicolas ,  Vincent S. Polkus ,  Kenneth Scott Kump ,  Remy Andre Klausz

IPC分类号： A61B608

CPC分类号： A61B6/08 ,  A61B6/0457 ,  A61B6/482 ,  A61B6/488 ,  A61B6/544 ,  A61B6/548

摘要： A system and method for improved imaging of a patient through the use of low-dose exposure aided positioning is provided. The patient is positioned in the X-ray system and them imaged with a low-dose pre-shot to verify the positioning of the patient. If the patient's positioning is acceptable, the patient is then imaged with a full-dose X-ray exposure. If the patient's positioning is not acceptable, the patient is repositioned and re-imaged with a low-dose pre-shot until the patient's positioning is acceptable. The low-dose pre-shot may take the form of a low-dose X-ray imaging sequence. The present invention thus provides for rapid verification of the proper positioning of the patient in the X-ray system in order to provide for optimal X-ray image quality. Additionally, the X-ray imaging system thus minimizes the additional exposure to X-ray radiation on the part of the patient.

摘要翻译： 提供了一种通过使用低剂量曝光辅助定位来改善患者成像的系统和方法。 将患者定位在X射线系统中，并以低剂量预注射成像，以验证患者的位置。 如果患者的定位是可接受的，则用全剂量X射线曝光对患者进行成像。 如果患者的定位不可接受，则患者将重新定位并以低剂量预注射重新成像，直到患者的定位可接受为止。 低剂量预注射可以采取低剂量X射线成像序列的形式。 因此，本发明提供了快速验证患者在X射线系统中的适当定位，以便提供最佳的X射线图像质量。 此外，X射线成像系统因此使对患者部分的X射线辐射的附加暴露最小化。

公开(公告)号：US07221782B1

公开(公告)日：2007-05-22

申请号：US09344190

申请日：1999-06-24

申请人： Kenneth Scott Kump

发明人： Kenneth Scott Kump

IPC分类号： G06K9/00

CPC分类号： A61B5/055 ,  A61B6/00 ,  A61B8/00 ,  G06T7/11 ,  G06T7/136 ,  G06T2207/10116

摘要： A method and apparatus are provided for adjusting a dynamic range of a digital medical image for a medical imaging system. The digital medical image contains a clinical region and a non-clinical region. The method and apparatus identify the non-clinical region of the digital medical image and mask the non-clinical region therefrom to form a clinical image. The clinical image is then used to calculate a desired dynamic range for the medical imaging system. The dynamic range of the medical imaging system is adjusted accordingly. According to one embodiment, the non-clinical region is identified by dividing the digital medical image into bands of a predetermined width, generating profiles for each band and differentiating the profiles to obtain a differentiated profile of each band of a digital medical image. The differentiated profile is than analyzed to identify peaks that exceed predetermined thresholds, wherein the regions of the differentiated profile proximate the peaks exceeding the threshold correspond to non-clinical regions. Once the non-clinical regions are identified, they are masked or removed. Next, a desired image characteristic, such as maximum and minimum gray scale values, are determined for the clinical region and a desired dynamic range for the image is obtained based on the image characteristics of the clinical region. In an alternative embodiment, a histogram is used to identify the non-clinical regions which are subsequently masked from the digital medical image.

摘要翻译： 提供了一种用于调整用于医学成像系统的数字医学图像的动态范围的方法和装置。 数字医学图像包含临床区域和非临床区域。 该方法和装置识别数字医学图像的非临床区域并掩盖其中的非临床区域以形成临床图像。 然后使用临床图像来计算医学成像系统的期望的动态范围。 相应地调整医学成像系统的动态范围。 根据一个实施例，通过将数字医学图像划分成预定宽度的频带来识别非临床区域，产生每个频带的分布，并且区分分布，以获得数字医学图像的每个频带的差异分布。 分析差异谱以鉴定超过预定阈值的峰，其中接近超过阈值的峰的分化谱的区域对应于非临床区域。 一旦鉴定了非临床区域，就会屏蔽或移除。 接下来，针对临床区域确定期望的图像特征，例如最大和最小灰度值，并且基于临床区域的图像特征获得图像的期望动态范围。 在替代实施例中，使用直方图来识别随后从数字医学图像中掩蔽的非临床区域。

公开(公告)号：US06694047B1

公开(公告)日：2004-02-17

申请号：US09354389

申请日：1999-07-15

申请人： Farshid Farrokhnia ,  Kenneth Scott Kump ,  Richard Aufrichtig ,  Alexander Y. Tokman

发明人： Farshid Farrokhnia ,  Kenneth Scott Kump ,  Richard Aufrichtig ,  Alexander Y. Tokman

IPC分类号： G06K900

CPC分类号： A61B6/583

摘要： A system for automated x-ray system parameter evaluation is provided. A physical model or template is created and stored in the system, one for each desired phantom. The automated system imports a grayscale x-ray image and then processes the image to determine image components. First, a histogram of the image is created, then a threshold in the histogram is determined and the imported image is binarized with respect to the threshold. Next, connected component analysis is used to determine image components. If the components do not match, then the image is rejected. The system next locates landmarks in the imported image corresponding to expected physical structures. The landmarks include a perimeter ring, vertical and horizontal line segments, and fiducials. The system uses the landmarks to predict Regions of Interest (ROIs) where measurement of the x-ray system parameters takes place. Finally, the x-ray system parameters are measured in the identified ROIs.

摘要翻译： 提供了一种自动X射线系统参数评估系统。 物理模型或模板被创建并存储在系统中，每个想要的幻影一个。 自动化系统导入灰度x射线图像，然后处理图像以确定图像分量。 首先，创建图像的直方图，然后确定直方图中的阈值，并将导入的图像相对于阈值二值化。 接下来，使用连通分量分析来确定图像分量。 如果组件不匹配，则图像被拒绝。 系统接下来根据预期的物理结构定位导入的图像中的地标。 地标包括周边环，垂直和水平线段以及基准点。 该系统使用地标来预测发生X射线系统参数测量的感兴趣区域（ROI）。 最后，在所识别的ROI中测量x射线系统参数。

公开(公告)号：US06931098B2

公开(公告)日：2005-08-16

申请号：US09683992

申请日：2002-03-08

申请人： Kenneth Scott Kump ,  Jibril Odogba

发明人： Kenneth Scott Kump ,  Jibril Odogba

IPC分类号： G01T1/00 ,  A61B6/00 ,  A61B6/03 ,  G01T1/20 ,  G03B42/02 ,  H04N5/32 ,  H04N5/325 ,  H04N5/335 ,  H04N5/353 ,  H04N5/357 ,  H05G1/64

CPC分类号： H04N5/361 ,  A61B6/032 ,  A61B6/405 ,  A61B6/4233 ,  A61B6/482 ,  A61B6/542 ,  G01T1/2018 ,  H04N5/325

摘要： A method minimizing artifacts in dual or multiple energy images includes: obtaining first and second offset images from a detector after obtaining first and second exposure image data sets from the detector. Other embodiments include: changing the dosage of the exposures, changing the gain of the detector, changing the pixel acquisition resolution of the detector, and leaving the detector unscrubbed between the first and second read times.

摘要翻译： 一种最小化双重或多个能量图像中的假象的方法包括：在从检测器获得第一和第二曝光图像数据集之后，从检测器获得第一和第二偏移图像。 其他实施例包括：改变曝光的剂量，改变检测器的增益，改变检测器的像素采集分辨率，以及在第一和第二读取时间之间离开检测器。

公开(公告)号：US06920198B2

公开(公告)日：2005-07-19

申请号：US10428734

申请日：2003-05-02

申请人： Ping Xue ,  Kenneth Scott Kump ,  Brian David Yanoff ,  Richard Aufrichtig ,  Mylene Roussel

发明人： Ping Xue ,  Kenneth Scott Kump ,  Brian David Yanoff ,  Richard Aufrichtig ,  Mylene Roussel

IPC分类号： A61B6/00 ,  G01N23/223 ,  H04N5/321 ,  G01N23/083

CPC分类号： H04N5/321 ,  G01N23/223 ,  G01N2223/076

摘要： A method for processing a fluoroscopic image includes generating a lag prediction model, scanning an object at a first radiation dosage with an imaging system including at least one radiation source and at least one detector array, and periodically updating the lag prediction model during the scan to generate at least one fluoroscopic image of the object.

摘要翻译： 一种用于处理透视图像的方法包括：产生滞后预测模型，用包括至少一个辐射源和至少一个检测器阵列的成像系统以第一辐射剂量扫描物体，并且在扫描期间周期性地更新滞后预测模型 生成对象的至少一个透视图像。

公开(公告)号：US06633657B1

公开(公告)日：2003-10-14

申请号：US09354111

申请日：1999-07-15

申请人： Kenneth Scott Kump ,  Ping Xue

发明人： Kenneth Scott Kump ,  Ping Xue

IPC分类号： G06K900

CPC分类号： G06T5/009

摘要： A method and system for controlling a dynamic range of a medical diagnostic image provided by a medical diagnostic system. A target dynamic range is identified independent of a dynamic range of an original medical image. A presentation map is generated defining a relation between the dynamic range of the original medical image representative of a patient and the target dynamic range. A gray level-optical density model may define the relation between gray levels of the original medical image and target optical densities of the presentation map, the gray level-optical density model being calculated based on film characteristics, selected optical densities for anatomical structure or on a measured dynamic range. A presentation image is created having the target dynamic range based on a the presentation map and original medical image.

摘要翻译： 一种用于控制由医疗诊断系统提供的医疗诊断图像的动态范围的方法和系统。 识别出与原始医学图像的动态范围无关的目标动态范围。 生成定义表示患者的原始医疗图像的动态范围与目标动态范围之间的关系的呈现图。 灰度级光密度模型可以定义原始医学图像的灰度级别和显示图的目标光密度之间的关系，基于胶片特性，选择的解剖结构光密度或基于 测量动态范围。 创建具有基于呈现图和原始医学图像的目标动态范围的呈现图像。

公开(公告)号：US07369711B2

公开(公告)日：2008-05-06

申请号：US10788070

申请日：2004-02-26

申请人： Jibril Odogba ,  Kenneth Scott Kump

发明人： Jibril Odogba ,  Kenneth Scott Kump

IPC分类号： G09G3/36 ,  G06K9/40

CPC分类号： A61B6/585 ,  G06T5/005 ,  G06T5/50 ,  G06T2207/10116 ,  G06T2207/20182 ,  G06T2207/30004

摘要： A system and method for asynchronous calibration of a solid-state detector are provided. A first offset is obtained with a first frame interval. A second offset image is obtained with a second frame interval that is shorter than the first frame interval. A third offset image is obtained with a third frame interval that is longer than the first frame interval. The first offset image is offset with each of the second offset image and the third offset image to produce offset comparison images. Pixels in the offset comparison images with an intensity value that exceeds an asynchronous threshold intensity value are identified as asynchronous bad pixels and added to a bad pixel map. Subsequently acquired x-ray images are offset with corresponding offset images. The bad pixel map is used to identify asynchronous bad pixels in the displayed images.

摘要翻译： 提供了一种用于固态检测器的异步校准的系统和方法。 以第一帧间隔获得第一偏移。 以比第一帧间隔短的第二帧间隔获得第二偏移图像。 以比第一帧间隔长的第三帧间隔获得第三偏移图像。 第一偏移图像与第二偏移图像和第三偏移图像中的每一个偏移，以产生偏移比较图像。 具有超过异步阈值强度值的强度值的偏移比较图像中的像素被识别为异步不良像素并被添加到不良像素图。 随后获得的X射线图像用相应的偏移图像偏移。 坏像素图用于识别显示图像中的异步不良像素。