公开(公告)号：US5650626A

公开(公告)日：1997-07-22

申请号：US682910

申请日：1996-07-16

申请人： David P. Trauernicht ,  John Yorkston

发明人： David P. Trauernicht ,  John Yorkston

IPC分类号： H01L27/146 ,  H04N5/32 ,  G01T1/24 ,  H01L27/04

CPC分类号： H01L27/14676 ,  H01L27/14658 ,  H04N5/32

摘要： An ionizing radiation imaging detector, for use with a ionizing radiation beam source comprising a pixellated conversion-detection unit, and a substrate supporting the conversion-detection unit. The substrate includes one or more elements having atomic numbers greater than 22, the elements having a total concentration in the substrate of greater than about 1 mole percent relative to the total number of moles of elements having atomic numbers of 22 or less. The substrate has a dimensionless absorption exponent of less than 0.5 for gamma ray emission of Am.sup.241 at about 60 keV;whereAE(Am.sup.241 60 keV)=t*(k.sub.1 e.sub.1 +k.sub.2 e.sub.2 +k.sub.3 e.sub.3 + . . . )and wherein AE(Am.sup.241 60 keV) represents the absorption exponent of said substrate relative to the about 60 keV gamma ray emission of Am.sup.241 ; t represents said thickness of said substrate in the principle direction of propagation of said x-ray beam; e.sub.1, e.sub.2, e.sub.3, . . . represent the concentrations of elements in said substrate; and k.sub.1, k.sub.2, k.sub.3, . . . represent the mass attenuation coefficients of the respective elements.

摘要翻译： 一种用于包括像素化转换检测单元的电离辐射束源的电离辐射成像检测器和支持该转换检测单元的基板。 衬底包括一个或多个原子序数大于22的元素，相对于原子序数为22或更小的元素的总摩尔数，元素在衬底中的总浓度大于约1摩尔％。 对于大约60keV的Am241的γ射线发射，衬底具有小于0.5的无量纲吸收指数; 其中AE（Am241 60keV）= t *（k1e1 + k2e2 + k3e3 + ...），其中AE（Am241 60keV）表示相对于Am241的约60keVγ射线发射的所述衬底的吸收指数; t表示所述X射线束的主要传播方向上的所述衬底的厚度; e1，e2，e3， 。 。 表示所述底物中元素的浓度; 和k1，k2，k3，...。 。 。 表示各个元件的质量衰减系数。

公开(公告)号：US5753921A

公开(公告)日：1998-05-19

申请号：US682911

申请日：1996-07-16

申请人： David P. Trauernicht ,  John Yorkston

发明人： David P. Trauernicht ,  John Yorkston

IPC分类号： G01T1/24

CPC分类号： G01T1/2018

摘要： An x-ray imaging detector having an x-ray converter layer, a pixellated detection array closely adjoining the x-ray converter layer, and a substrate supporting the detection array, the substrate having a surface nearest said x-ray converter layer, the substrate including one or more elements having atomic numbers greater than 22, said elements having a total concentration in the substrate of greater than about 1 mole percent relative to the total number of moles of elements having atomic numbers of 22 or less, the substrate having a thickness in the same direction as the thickness of the x-ray converter of less than about 0.2 mm.sup.2 divided by the thickness of the converter in millimeters, the substrate having a dimensionless absorption exponent of greater than about 0.5 and less than about 5 for gamma ray emission of Am.sup.241 at about 60 keV; wherein AE(Am.sup.241 60 keV)=t*(k.sub.1 e.sub.1 +k.sub.2 e.sub.2 +k.sub.3 e.sub.3 + . . . ) wherein AE(Am.sup.241 60 keV) represents the absorption exponent of the substrate relative to the about 60 keV gamma ray emission of Am.sup.241 ; t represents the thickness of the substrate in the principle direction of propagation of the x-ray beam; e.sub.1, e.sub.2, e.sub.3, . . . represent the concentrations of elements in the substrate; and k.sub.1, k.sub.2, k.sub.3, . . . represent the mass attenuation coefficients of the respective elements.

摘要翻译： x射线成像检测器，其具有x射线转换层，与x射线转换层紧密邻接的像素化检测阵列，以及支撑该检测阵列的基片，该基片具有最靠近x射线转换层的表面，该基片 包括一个或多个原子序数大于22的元素，所述元素相对于原​​子序数为22或更小的元素的总摩尔数大于约1摩尔百分数，基底中的总浓度基本上具有厚度 在x射线转换器的厚度小于约0.2mm 2的相同方向除以转换器的厚度（毫米）的情况下，衬底对于γ射线发射具有大于约0.5且小于约5的无量纲吸收指数 的Am241约60keV; 其中AE（Am241 60keV）= t *（k1e1 + k2e2 + k3e3 + ...）其中AE（Am241 60keV）表示相对于Am241的约60keVγ射线发射的衬底的吸收指数; t表示在x射线束的主要传播方向上的衬底的厚度; e1，e2，e3， 。 。 代表基质中元素的浓度; 和k1，k2，k3，...。 。 。 表示各个元件的质量衰减系数。

公开(公告)号：US20100278300A1

公开(公告)日：2010-11-04

申请号：US12771250

申请日：2010-04-30

申请人： John Yorkston ,  Robert Asento ,  Jeffrey H. Siewerdsen ,  David H. Foos

发明人： John Yorkston ,  Robert Asento ,  Jeffrey H. Siewerdsen ,  David H. Foos

IPC分类号： A61B6/04 ,  A61B6/03

CPC分类号： A61B6/035 ,  A61B6/03 ,  A61B6/032 ,  A61B6/04 ,  A61B6/4085 ,  A61B6/4441 ,  A61B6/4452 ,  A61B6/466 ,  A61B6/505

摘要： An apparatus for cone beam computed tomography of an extremity has a digital radiation detector and a first device to move the detector along a circular detector path extending so that the detector moves both at least partially around a first extremity of the patient and between the first extremity and a second, adjacent extremity. The detector path has radius R1 sufficient to position the extremity approximately centered in the detector path. There is a radiation source with a second device to move the source along a concentric circular source path having a radius R2 greater than radius R1, radius R2 sufficiently long to allow adequate radiation exposure of the first extremity for an image capture by the detector. A first circumferential gap in the source path allows the second extremity to be positioned in the first circumferential gap during image capture.

摘要翻译： 用于末端锥形束计算机断层摄影的装置具有数字辐射检测器和第一装置，以沿着延伸的圆形检测器路径移动检测器，使得检测器至少部分地围绕患者的第一末端和第一末端之间移动 和第二个相邻的肢体。 检测器路径具有足够的半径R1，以使末端大致居中在检测器路径中。 存在具有第二装置的辐射源，以沿着具有大于半径R1的半径R2，半径R2足够长的同心圆形源路径移动源，以允许第一末端的足够的辐射暴露用于检测器的图像捕获。 源路径中的第一周向间隙允许在图像捕获期间将第二末端定位在第一周向间隙中。

公开(公告)号：US20100080355A1

公开(公告)日：2010-04-01

申请号：US12239863

申请日：2008-09-29

申请人： John Yorkston ,  David H. Foos ,  Xiaohui Wang

发明人： John Yorkston ,  David H. Foos ,  Xiaohui Wang

IPC分类号： H05G1/64

CPC分类号： A61B6/00 ,  A61B6/482 ,  A61B6/5205 ,  G01T1/00

摘要： A method is disclosed for acquiring a high speed dual-energy image pair using a pixilated digital detector. A single pixilated digital detector acquires and encodes two separate images in effectively one image, eliminating the need to read out a first image prior to acquiring a second image. The encoded information is then utilized to obtain two distinct dual-energy images which may be decomposed to form bone and soft-tissue only images.

摘要翻译： 公开了一种使用像素化数字检测器来获取高速双能图像对的方法。 单个像素化数字检测器有效地获取并编码两个单独的图像，一个图像，消除了在获取第二个图像之前读出第一个图像的需要。 然后利用编码的信息来获得两个不同的双能量图像，这些图像可以被分解以形成仅有骨骼和软组织的图像。

公开(公告)号：US08998486B2

公开(公告)日：2015-04-07

申请号：US14266861

申请日：2014-05-01

申请人： John Yorkston ,  Robert J. Asento ,  Jeffrey H. Siewerdsen ,  David H. Foos

发明人： John Yorkston ,  Robert J. Asento ,  Jeffrey H. Siewerdsen ,  David H. Foos

IPC分类号： H05G1/04 ,  A61B6/03 ,  A61B6/04 ,  A61B6/00

CPC分类号： A61B6/035 ,  A61B6/03 ,  A61B6/032 ,  A61B6/04 ,  A61B6/4085 ,  A61B6/4441 ,  A61B6/4452 ,  A61B6/466 ,  A61B6/505

摘要： An apparatus for cone beam computed tomography of an extremity has a digital radiation detector and a first device to move the detector along a circular detector path extending so that the detector moves both at least partially around a first extremity of the patient and between the first extremity and a second, adjacent extremity. The detector path has radius R1 sufficient to position the extremity approximately centered in the detector path. There is a radiation source with a second device to move the source along a concentric circular source path having a radius R2 greater than radius R1, radius R2 sufficiently long to allow adequate radiation exposure of the first extremity for an image capture by the detector. A first circumferential gap in the source path allows the second extremity to be positioned in the first circumferential gap during image capture.

摘要翻译： 用于末端锥形束计算机断层摄影的装置具有数字辐射检测器和第一装置，以沿着延伸的圆形检测器路径移动检测器，使得检测器至少部分地围绕患者的第一末端和第一末端之间移动 和第二个相邻的肢体。 检测器路径具有足够的半径R1，以使末端大致居中在检测器路径中。 存在具有第二装置的辐射源，以沿着具有大于半径R1的半径R2，半径R2足够长的同心圆形源路径移动源，以允许第一末端的足够的辐射暴露用于检测器的图像捕获。 源路径中的第一周向间隙允许在图像捕获期间将第二末端定位在第一周向间隙中。

公开(公告)号：US20110176715A1

公开(公告)日：2011-07-21

申请号：US12971042

申请日：2010-12-17

申请人： David H. Foos ,  Jeffrey H. Siewerdsen ,  John Yorkston ,  Dong Yang

发明人： David H. Foos ,  Jeffrey H. Siewerdsen ,  John Yorkston ,  Dong Yang

IPC分类号： G06K9/00

CPC分类号： G06T11/006 ,  G06T2211/412 ,  G06T2211/436

摘要： A method for obtaining a 3-D image. An initial volume image is obtained of a subject wherein the subject is stationary and in a first pose. One or more 2-D images of the subject are obtained as the subject is moving between the first pose and a second pose. An endpoint volume image of the subject with the subject stationary and in the second pose is obtained. At least the initial volume image is modified according to the one or more obtained 2-D images to form at least one intermediate volume image that is representative of the subject's position between the first and second pose. The at least one intermediate volume image can be displayed.

摘要翻译： 一种获得3-D图像的方法。 获得对象的初始体积图像，其中对象是静止的并处于第一姿态。 当对象在第一姿态和第二姿态之间移动时，获得被摄体的一个或多个2-D图像。 获得被摄体静止并处于第二姿势的被摄体的端点体积图像。 至少初始体积图像根据一个或多个所获得的2-D图像被修改以形成代表被摄体在第一和第二姿势之间的位置的至少一个中间体积图像。 可以显示至少一个中间体积图像。

公开(公告)号：US07834321B2

公开(公告)日：2010-11-16

申请号：US11487539

申请日：2006-07-14

申请人： John Yorkston ,  Kwok-Leung Yip ,  Timothy J. Wojcik

发明人： John Yorkston ,  Kwok-Leung Yip ,  Timothy J. Wojcik

IPC分类号： H01L27/146

CPC分类号： G01T1/2018 ,  G21K4/00 ,  G21K2004/04

摘要： A radiographic imaging apparatus for taking X-ray images of an object includes a front panel and back panel. The panels have substrates, arrays of signal sensing elements and readout devices, and passivation layers. The front and back panels have scintillating phosphor layers responsive to X-rays passing through an object produce light which illuminates the signal sensing elements to provide signals representing X-ray images. The X-ray apparatus has means for combining the signals of the X-ray images to produce a composite X-ray image. Furthermore, the composition and thickness of the scintillating phosphor layers are selected, relative to each other, to improve the diagnostic efficacy of the composite X-ray image. Alternatively, a radiographic imaging apparatus has a single panel having arrays of signal sensing elements and readout devices and scintillating phosphor layers that are disposed on both sides of a single substrate.

摘要翻译： 用于拍摄物体的X射线图像的放射线照相成像装置包括前面板和后面板。 面板具有基板，信号感测元件阵列和读出装置以及钝化层。 前面板和后面板具有响应穿过物体的X射线的闪烁荧光体层产生照亮信号感测元件的光，以提供表示X射线图像的信号。 X射线装置具有用于组合X射线图像的信号以产生复合X射线图像的装置。 此外，相对于彼此来选择闪烁荧光体层的组成和厚度，以提高复合X射线图像的诊断功效。 或者，放射线照相成像装置具有单个面板，其具有设置在单个基板的两侧上的信号感测元件和读出装置和闪烁荧光体层的阵列。

公开(公告)号：US07623628B2

公开(公告)日：2009-11-24

申请号：US11951483

申请日：2007-12-06

申请人： Richard L. VanMetter ,  Jeffrey H. Siewerdsen ,  Nick A. Shkumat ,  John Yorkston

发明人： Richard L. VanMetter ,  Jeffrey H. Siewerdsen ,  Nick A. Shkumat ,  John Yorkston

IPC分类号： A61B6/00

CPC分类号： A61B6/482 ,  A61B5/0261 ,  A61B5/1455 ,  A61B6/503 ,  A61B6/541

摘要： Methods are provided for cardiac gating of multiple-energy projection radiographic imaging utilizing an apparatus that measures the patient's peripheral blood perfusion. The choice of methods is dependant on the patient's heart rate and the delays inherent in the imaging system. A first method allows for imaging during the diastole period of the current cardiac cycle. A second method provides an implemented delay to acquire the image during the diastole period of a subsequent cardiac cycle. The use of the apparatus that measures the patient's peripheral blood perfusion allows for an efficient and convenient means of cardiac gating while avoiding occlusion of diagnostically important anatomy.

摘要翻译： 提供了使用测量患者的外周血液灌注的装置的多能量投影放射成像心脏门控的方法。 方法的选择取决于患者的心率和成像系统固有的延迟。 第一种方法允许在当前心动周期的舒张期期间进行成像。 第二种方法提供实施的延迟以在随后的心动周期的舒张期期间获取图像。 测量患者外周血液灌注的装置的使用允许心脏门控的有效和方便的手段，同时避免了诊断上重要的解剖结构的闭塞。

公开(公告)号：US20050104018A1

公开(公告)日：2005-05-19

申请号：US10988101

申请日：2004-11-12

申请人： Yun Chang ,  John Yorkston ,  David Foos

发明人： Yun Chang ,  John Yorkston ,  David Foos

IPC分类号： H04N5/32 ,  G03B42/08

CPC分类号： A61B6/5241 ,  H04N5/32

摘要： Apparatus for acquiring an elongated radiographic image. The apparatus includes a flat panel electronic detector of radiographic images, the detector having a known length; and a transport mechanism for mounting the detector for movement in a direction parallel to the known length so that the detector can be positioned in sequential contiguous partially-overlapping positions to acquire a radiation image greater in length than the detector length. At least one marker is disposed in a region corresponding with each partially-overlapping position of the detector.

摘要翻译： 用于获取细长放射线图像的装置。 该装置包括放射照相图像的平板电子检测器，该检测器具有已知长度; 以及传送机构，用于安装用于沿着与已知长度平行的方向移动的检测器，使得检测器可以被定位在顺序连续的部分重叠位置，以获取比检测器长度更大的长度的辐射图像。 在对应于检测器的每个部分重叠位置的区域中设置至少一个标记。

公开(公告)号：US08210745B2

公开(公告)日：2012-07-03

申请号：US13076705

申请日：2011-03-31

申请人： John Yorkston ,  William F. Snyder ,  Jeffrey H. Siewerdsen

发明人： John Yorkston ,  William F. Snyder ,  Jeffrey H. Siewerdsen

IPC分类号： H05G1/04

CPC分类号： A61B6/032 ,  A61B6/04 ,  A61B6/4085 ,  A61B6/4291 ,  A61B6/466 ,  A61B6/505

摘要： An apparatus for cone beam computed tomography of lower leg portions of a patient has a radiation source and a source transport actuable to move the source along an arcuate source path within a housing, from one side of a circumferential gap to the other and has a radius R2 about a center. A housing is provided for placement of the patient's foot. A digital radiation detector has a detector transport actuable to move the detector along an arcuate detector path within the housing, the detector path having a radius R1 about the center and concentric with the source path, wherein R1 is less than R2, and wherein the detector path extends from one side of the pedestal indent to the other. A gap closure apparatus is movable to a position that continues the detector path across the circumferential gap and encloses the detector path.

摘要翻译： 用于患者的小腿部分的锥形束计算机断层摄影的装置具有可驱动的辐射源和源运送装置，其可沿着圆周间隙的另一侧沿壳体内的弧形源路径移动源，并具有半径 R2关于中心。 提供用于放置患者脚的壳体。 数字辐射检测器具有可操作的检测器传送装置，用于沿着壳体内的弓形检测器路径移动检测器，检测器路径具有围绕中心并且与源路径同心的半径R1，其中R1小于R2，并且其中检测器 路径从基座缩进的一侧延伸到另一侧。 间隙闭合装置可移动到使检测器路径跨过周向间隙继续并包围检测器路径的位置。