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1. 发明授权

US07663105B2 Apparatus and method for image reconstruction for a synthetic aperture gamma ray imager 有权
标题翻译：用于合成孔径伽马射线成像仪的图像重建的装置和方法
公开(公告)号：US07663105B2
公开(公告)日：2010-02-16
申请号：US12331936
申请日：2008-12-10
申请人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz , Evren Asma , Jeffrey Gordon , Floribertus P. M. Heukensfeldt Jansen
发明人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz , Evren Asma , Jeffrey Gordon , Floribertus P. M. Heukensfeldt Jansen
IPC分类号： G01T1/00
CPC分类号： G03B42/02
摘要： An imaging system includes a platform having mounted thereon a coded-aperture imaging device and positioned to receive radiation over a baseline. The imaging system includes a computer configured to acquire a plurality of far-field datasets over the baseline, the plurality of far-field datasets comprising data received via the coded-aperture imaging device. The computer is also configured to form a preliminary image based on the acquired plurality of far-field datasets, and apply an expectation maximization (EM) algorithm to the preliminary image; wherein the EM algorithm includes an ordered subset algorithm.
摘要翻译：成像系统包括其上安装有编码孔径成像装置并被定位成在基线上接收辐射的平台。成像系统包括被配置为在基线上获取多个远场数据集的计算机，所述多个远场数据集包括经由编码孔径成像装置接收的数据。计算机还被配置为基于所获取的多个远场数据集形成初步图像，并将预期最大化（EM）算法应用于初步图像; 其中所述EM算法包括有序子集算法。

2. 发明申请

US20090296890A1 APPARATUS AND METHOD FOR IMAGE RECONSTRUCTION FOR A SYNTHETIC APERTURE GAMMA RAY IMAGER 有权
标题翻译：用于合成孔径伽马射线成像器的图像重建的装置和方法
公开(公告)号：US20090296890A1
公开(公告)日：2009-12-03
申请号：US12331936
申请日：2008-12-10
申请人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz , Evren Asma , Jeffrey Gordon , Floribertus P.M. Heukensfeldt Jansen
发明人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz , Evren Asma , Jeffrey Gordon , Floribertus P.M. Heukensfeldt Jansen
IPC分类号： G03B42/02
CPC分类号： G03B42/02
摘要： An imaging system includes a platform having mounted thereon a coded-aperture imaging device and positioned to receive radiation over a baseline. The imaging system includes a computer configured to acquire a plurality of far-field datasets over the baseline, the plurality of far-field datasets comprising data received via the coded-aperture imaging device. The computer is also configured to form a preliminary image based on the acquired plurality of far-field datasets, and apply an expectation maximization (EM) algorithm to the preliminary image; wherein the EM algorithm includes an ordered subset algorithm.
摘要翻译：成像系统包括其上安装有编码孔径成像装置并被定位成在基线上接收辐射的平台。成像系统包括被配置为在基线上获取多个远场数据集的计算机，所述多个远场数据集包括经由编码孔径成像装置接收的数据。计算机还被配置为基于所获取的多个远场数据集形成初步图像，并将预期最大化（EM）算法应用于初步图像; 其中所述EM算法包括有序子集算法。

3. 发明申请

US20090297058A1 METHOD AND APPARATUS FOR IMAGE RECONSTRUCTION FOR A SYNTHETIC APERTURE GAMMA RAY IMAGER 有权
标题翻译：用于合成孔径伽马射线成像器的图像重建的方法和装置
公开(公告)号：US20090297058A1
公开(公告)日：2009-12-03
申请号：US12332439
申请日：2008-12-11
申请人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz , Evren Asma
发明人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz , Evren Asma
IPC分类号： G06K9/40 , G01T1/164 , G06K9/20
CPC分类号： G03B42/02
摘要： An imaging system includes a platform having mounted thereon an imaging device. The imaging device includes a first detector and a second detector. The imaging system includes a mask having a first pattern of apertures therein, the mask positioned on a first side of the first detector, an anti-mask having a second pattern of apertures therein, wherein the second pattern is derived from the first pattern, the anti-mask positioned on a first side of the second detector, and a computer configured to acquire a plurality of mask datasets and anti-mask datasets of a gamma source, add one of the mask datasets and subtract its respective anti-mask dataset to create a far-field dataset, adjust the far-field image dataset, reconstruct a near-field image of the source using the far-field dataset, and apply an expectation maximization (EM) algorithm to one of the far-field image dataset and the near-field image to enhance contrast.
摘要翻译：成像系统包括其上安装有成像装置的平台。成像装置包括第一检测器和第二检测器。所述成像系统包括掩模，所述掩模具有其中的孔的第一图案，所述掩模位于所述第一检测器的第一侧上，所述掩模具有第二图案孔，其中所述第二图案是从所述第一图案得到的，反掩模位于第二检测器的第一侧，以及计算机，被配置为获取伽马源的多个掩模数据集和反掩模数据集，添加掩模数据集之一并减去其各自的防掩模数据集以创建远场数据集，调整远场图像数据集，使用远场数据集重建源的近场图像，并将期望最大化（EM）算法应用于远场图像数据集和近场图像增强对比度。

4. 发明授权

US08080800B2 Method and apparatus for image reconstruction for a synthetic aperture gamma ray imager 有权
标题翻译：用于合成孔径伽马射线成像仪的图像重建的方法和装置
公开(公告)号：US08080800B2
公开(公告)日：2011-12-20
申请号：US12332439
申请日：2008-12-11
申请人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz , Evren Asma
发明人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz , Evren Asma
IPC分类号： G06K9/40 , G01T1/164
CPC分类号： G03B42/02
摘要： An imaging system includes a platform having mounted thereon an imaging device. The imaging device includes a first detector and a second detector. The imaging system includes a mask having a first pattern of apertures therein, the mask positioned on a first side of the first detector, an anti-mask having a second pattern of apertures therein, wherein the second pattern is derived from the first pattern, the anti-mask positioned on a first side of the second detector, and a computer configured to acquire a plurality of mask datasets and anti-mask datasets of a gamma source, add one of the mask datasets and subtract its respective anti-mask dataset to create a far-field dataset, adjust the far-field image dataset, reconstruct a near-field image of the source using the far-field dataset, and apply an expectation maximization (EM) algorithm to one of the far-field image dataset and the near-field image to enhance contrast.
摘要翻译：成像系统包括其上安装有成像装置的平台。成像装置包括第一检测器和第二检测器。所述成像系统包括掩模，所述掩模具有其中的孔的第一图案，所述掩模位于所述第一检测器的第一侧上，所述掩模具有第二图案孔，其中所述第二图案是从所述第一图案得到的，反掩模位于第二检测器的第一侧，以及计算机，被配置为获取伽马源的多个掩模数据集和反掩模数据集，添加掩模数据集之一并减去其各自的防掩模数据集以创建远场数据集，调整远场图像数据集，使用远场数据集重建源的近场图像，并将期望最大化（EM）算法应用于远场图像数据集和近场图像增强对比度。

5. 发明申请

US20140064456A1 MOTION CORRECTION SYSTEM AND METHOD FOR AN X-RAY TUBE 有权
标题翻译：运动校正系统和X射线管的方法
公开(公告)号：US20140064456A1
公开(公告)日：2014-03-06
申请号：US13602080
申请日：2012-08-31
申请人： Yun Zou , Scott Stephen Zelakiewicz , Floribertus P. M. Heukensfeldt Jansen , Jeffrey Wayne Eberhard , Fengfeng Tao , Timothy Powers , Thomas Edmund Sjoberg
发明人： Yun Zou , Scott Stephen Zelakiewicz , Floribertus P. M. Heukensfeldt Jansen , Jeffrey Wayne Eberhard , Fengfeng Tao , Timothy Powers , Thomas Edmund Sjoberg
IPC分类号： H01J35/30
CPC分类号： H01J35/28 , H01J35/025 , H01J35/14
摘要： A motion correction system and method for motion correction for an x-ray tube is presented. One embodiment of the motion correction system includes a sensing unit coupled to an x-ray tube to determine a distance with which an impingement location of an electron beam generated by the x-ray tube deviates from a determined location due to motion of the x-ray tube. The motion correction system further includes a control unit coupled to the sensing unit to generate a control signal corresponding to the distance with which the impingement location of the electron beam deviates. Also, the motion correction system includes a deflection unit coupled to the control unit to steer the electron beam to the determined location based on the generated control signal.
摘要翻译：提出了用于X射线管的运动校正系统和运动校正方法。运动校正系统的一个实施例包括耦合到X射线管的感测单元，以确定由x射线管产生的电子束的冲击位置由于X射线管的运动而偏离确定的位置的距离，射线管。运动校正系统还包括耦合到感测单元的控制单元，以产生对应于电子束的冲击位置偏离的距离的控制信号。此外，运动校正系统包括耦合到控制单元的偏转单元，以基于所生成的控制信号将电子束转向确定的位置。

6. 发明授权

US08923484B2 Motion correction system and method for an x-ray tube 有权
标题翻译： X射线管的运动校正系统和方法
公开(公告)号：US08923484B2
公开(公告)日：2014-12-30
申请号：US13602080
申请日：2012-08-31
申请人： Yun Zou , Scott Stephen Zelakiewicz , Floribertus P. M. Heukensfeldt Jansen , Jeffrey Wayne Eberhard , Fengfeng Tao , Timothy Powers , Thomas Edmund Sjoberg
发明人： Yun Zou , Scott Stephen Zelakiewicz , Floribertus P. M. Heukensfeldt Jansen , Jeffrey Wayne Eberhard , Fengfeng Tao , Timothy Powers , Thomas Edmund Sjoberg
IPC分类号： H01J35/28 , H01J35/24 , H01J35/14
CPC分类号： H01J35/28 , H01J35/025 , H01J35/14
摘要： A motion correction system and method for motion correction for an x-ray tube is presented. One embodiment of the motion correction system includes a sensing unit coupled to an x-ray tube to determine a distance with which an impingement location of an electron beam generated by the x-ray tube deviates from a determined location due to motion of the x-ray tube. The motion correction system further includes a control unit coupled to the sensing unit to generate a control signal corresponding to the distance with which the impingement location of the electron beam deviates. Also, the motion correction system includes a deflection unit coupled to the control unit to steer the electron beam to the determined location based on the generated control signal.
摘要翻译：提出了用于X射线管的运动校正系统和运动校正方法。运动校正系统的一个实施例包括耦合到X射线管的感测单元，以确定由x射线管产生的电子束的冲击位置由于X射线管的运动而偏离确定的位置的距离，射线管。运动校正系统还包括耦合到感测单元的控制单元，以产生对应于电子束的冲击位置偏离的距离的控制信号。此外，运动校正系统包括耦合到控制单元的偏转单元，以基于所生成的控制信号将电子束转向确定的位置。

7. 发明授权

US08013310B2 Apparatus and method for image reconstruction for a synthetic aperture gamma ray imager 有权
标题翻译：用于合成孔径伽马射线成像仪的图像重建的装置和方法
公开(公告)号：US08013310B2
公开(公告)日：2011-09-06
申请号：US12348440
申请日：2009-01-05
申请人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz
发明人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz
IPC分类号： G01T1/00
CPC分类号： G03B42/02
摘要： An imaging system includes a platform having mounted thereon a coded-aperture imaging device and positioned to receive radiation over a baseline, and a computer configured to acquire a plurality of far-field datasets over the baseline, the plurality of far-field datasets comprising data received via the coded-aperture imaging device, form a first image from the plurality of far-field datasets, and form a second image if the first image indicates presence of a source, the second image formed from the plurality of far-field datasets using an estimated source location from the first image and thereby having a higher contrast than the first image.
摘要翻译：成像系统包括其上安装有编码孔径成像装置并被定位成在基线上接收辐射的平台以及被配置为在基线上获取多个远场数据集的计算机，所述多个远场数据集包括数据通过编码孔径成像装置接收，形成来自多个远场数据集的第一图像，并且如果第一图像指示源的存在，则形成第二图像，由多个远场数据集形成的第二图像使用来自第一图像的估计源位置，从而具有比第一图像更高的对比度。

8. 发明申请

US20100104064A1 SYSTEM AND METHOD FOR THREAT DETECTION 审中-公开
标题翻译：用于威胁检测的系统和方法
公开(公告)号：US20100104064A1
公开(公告)日：2010-04-29
申请号：US12256755
申请日：2008-10-23
申请人： Scott Stephen Zelakiewicz , Ralph Thomas Hoctor
发明人： Scott Stephen Zelakiewicz , Ralph Thomas Hoctor
IPC分类号： G01N23/04
CPC分类号： G01T1/169
摘要： A system for threat detection is provided. The system includes an imaging detector configured to detect radiation originating from at least one source of radiation over a pre-determined period of time or distance traveled. The system also includes a processor coupled to the imaging detector. The processor is configured to backproject the radiation detected onto multiple points in world space via an image reconstruction technique. The processor is also configured to generate a first set of image pixels identifying a location of the source of radiation corresponding to each of the points in world space, wherein the first set of image pixels indicate presence of all possible sources of radiation. The processor is further configured to generate a second set of image pixels from the radiation backprojected, identifying only one or more potential sources of threat via a threat detection algorithm.
摘要翻译：提供了威胁检测系统。该系统包括成像检测器，被配置为在预定的时间段或行驶距离上检测源自至少一个辐射源的辐射。该系统还包括耦合到成像检测器的处理器。处理器被配置为经由图像重建技术将检测到的辐射反向投影到世界空间中的多个点。处理器还被配置为生成识别对应于世界空间中的每个点的辐射源的位置的第一组图像像素，其中第一组图像像素指示所有可能的辐射源的存在。处理器还被配置为从反辐射的辐射中生成第二组图像像素，通过威胁检测算法仅识别一个或多个潜在的威胁来源。

9. 发明申请

US20090310747A1 APPARATUS AND METHOD FOR IMAGE RECONSTRUCTION FOR A SYNTHETIC APERTURE GAMMA RAY IMAGER 有权
标题翻译：用于合成孔径伽马射线成像器的图像重建的装置和方法
公开(公告)号：US20090310747A1
公开(公告)日：2009-12-17
申请号：US12348440
申请日：2009-01-05
申请人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz
发明人： Ralph Thomas Hoctor , Scott Stephen Zelakiewicz
IPC分类号： G01N23/04 , G06F19/00
CPC分类号： G03B42/02
摘要： An imaging system includes a platform having mounted thereon a coded-aperture imaging device and positioned to receive radiation over a baseline, and a computer configured to acquire a plurality of far-field datasets over the baseline, the plurality of far-field datasets comprising data received via the coded-aperture imaging device, form a first image from the plurality of far-field datasets, and form a second image if the first image indicates presence of a source, the second image formed from the plurality of far-field datasets using an estimated source location from the first image and thereby having a higher contrast than the first image.
摘要翻译：成像系统包括其上安装有编码孔径成像装置并被定位成在基线上接收辐射的平台以及被配置为在基线上获取多个远场数据集的计算机，所述多个远场数据集包括数据通过编码孔径成像装置接收，形成来自多个远场数据集的第一图像，并且如果第一图像指示源的存在，则形成第二图像，由多个远场数据集形成的第二图像使用来自第一图像的估计源位置，从而具有比第一图像更高的对比度。

10. 发明授权

US07915591B2 Mask for coded aperture systems 有权
标题翻译：编码孔径系统的掩模
公开(公告)号：US07915591B2
公开(公告)日：2011-03-29
申请号：US12122471
申请日：2008-05-16
申请人： Scott Stephen Zelakiewicz , Jeffrey Seymour Gordon , Floribertus Heukensfeldt Jansen
发明人： Scott Stephen Zelakiewicz , Jeffrey Seymour Gordon , Floribertus Heukensfeldt Jansen
IPC分类号： G01T1/36
CPC分类号： G01T1/295
摘要： A detector for identification and localization of radioisotopes, comprising a position sensitive detector configured to observe the location of emitted high energy radiation, wherein the position sensitive detector comprises a surface comprised of a first radiation sensitive material; and an active mask disposed in front of the position sensitive detector positioned such that the emitted high energy radiation is detected by the position sensitive detector after passage through the mask, wherein the mask comprises a second radiation sensitive material.
摘要翻译：一种用于放射性同位素识别和定位的检测器，包括位置敏感检测器，其被配置为观察所发射的高能量辐射的位置，其中所述位置敏感检测器包括由第一辐射敏感材料组成的表面; 以及设置在所述位置敏感检测器前面的有源掩模，其被定位成使得所述发射的高能量辐射在通过所述掩模之后由所述位置敏感检测器检测，其中所述掩模包括第二辐射敏感材料。

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