公开(公告)号：WO2007026273A3

公开(公告)日：2007-05-31

申请号：PCT/IB2006052863

申请日：2006-08-18

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS CORP ,  SHECHTER GILAD

Inventor： SHECHTER GILAD

IPC: G01T1/29

CPC classification number: G01T1/2985 ,  Y10S378/901

Abstract: A tomographic apparatus includes a radiation source (12) having a plurality of focal spots (F a , F b , F c , F d ) and a detector (20) which generates output signals indicative of radiation received along a plurality of rays. A height rebinner (34) performs a height rebinning of the acquired rays to generate height interpolated readings. A transverse rebinner (36) performs a two-dimensional transverse interpolation of the height interpolated rays in a canonical space to generate a plurality of transversely interpolated readings (302). The transversely interpolated readings (302) are reconstructed to generate a human readable image.

Abstract translation: 一种层析成像设备包括：具有多个焦点（F _{a ，F b ，F c ，F}

公开(公告)号：WO2010133983A1

公开(公告)日：2010-11-25

申请号：PCT/IB2010/051628

申请日：2010-04-14

Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V. ,  U.S. PHILIPS CORPORATION ,  SHECHTER, Gilad ,  LIVNE, Amir

Inventor： SHECHTER, Gilad ,  LIVNE, Amir

IPC: G06T11/00

CPC classification number: G06T11/005

Abstract: A fan-to-parallel beam re-binner (114) includes a time deflection determiner (202) that determines time deflections for a plurality of integration periods for different detector pixels (113, 334) of an imaging system (100), a data shifter (204) that shifts fan beam data acquired for the integration periods by the system (100) by time offsets corresponding to the time deflections; and a data re-sorter (206) that parallelizes the data.

Abstract translation: 风扇对平行光束重新折叠器（114）包括时间偏转确定器（202），其确定用于成像系统（100）的不同检测器像素（113,334）的多个积分周期的时间偏差，数据 移位器（204），用于通过系统（100）将与时间偏差对应的时间偏移量移位对于积分期间获取的扇形波束数据; 以及使数据并行化的数据重新分类器（206）。

公开(公告)号：WO2008075267A2

公开(公告)日：2008-06-26

申请号：PCT/IB2007/055083

申请日：2007-12-13

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  SHECHTER, Gilad ,  GLASBERG, Shmuel ,  VAN STEVENDAAL, Udo ,  FORTHMANN, Peter ,  KOEHLER, Thomas ,  BONTUS, Claas

Inventor： SHECHTER, Gilad ,  GLASBERG, Shmuel ,  VAN STEVENDAAL, Udo ,  FORTHMANN, Peter ,  KOEHLER, Thomas ,  BONTUS, Claas

IPC: A61B6/06 ,  A61B6/00

CPC classification number: A61B6/06

Abstract: An imaging device (100,200) for imaging a volume of interest (5,45) of a subject (4,44) comprises a radiation source (1) for emitting radiation (6), which is arranged for rotational movement around an axis (8) of the subject (4,44), a collimator (3) for collimating the radiation (6) at least in the axial direction of the subject (4,44) before traversing through the subject (4,44), a detector (2) for receiving the collimated radiation (11,12,13,14,15,16) that has traversed through the subject (4,44), and a control unit (7) for controlling the collimator (3) based on at least one geometry parameter that defines a geometrical relationship between the volume of interest (5,45) and the imaging device (100,200). The imaging device (100,200) provides for a reduced dose of radiation applied to the subject (4,44).

Abstract translation: 用于对受检者（4,44）的感兴趣体积（5,45）成像的成像设备（100,200）包括用于发射辐射（6）的辐射源（1），该辐射源 用于围绕对象（4,44）的轴线（8）进行旋转运动;准直器（3），用于在横穿对象（444）之前至少沿对象（4,44）的轴向方向校准辐射（6） （4,44），用于接收穿过对象（4,44）的准直辐射（11,12,13,14,15,16）的检测器（2），以及控制单元（7） （3），所述至少一个几何参数定义所述感兴趣体积（5,45）和所述成像装置（100,200）之间的几何关系。 成像装置（100,200）为受试者提供减少的辐射剂量（4,44）。

公开(公告)号：WO2007026273A2

公开(公告)日：2007-03-08

申请号：PCT/IB2006/052863

申请日：2006-08-18

Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V. ,  U.S. PHILIPS CORPORATION ,  SHECHTER, Gilad

Inventor： SHECHTER, Gilad

CPC classification number: G01T1/2985 ,  Y10S378/901

Abstract: A tomographic apparatus includes a radiation source (12) having a plurality of focal spots (F a , F b , F c , F d ) and a detector (20) which generates output signals indicative of radiation received along a plurality of rays. A height rebinner (34) performs a height rebinning of the acquired rays to generate height interpolated readings. A transverse rebinner (36) performs a two-dimensional transverse interpolation of the height interpolated rays in a canonical space to generate a plurality of transversely interpolated readings (302). The transversely interpolated readings (302) are reconstructed to generate a human readable image.

Abstract translation: 一种断层摄影装置包括具有多个焦斑（F SUB），F B，F C，F C SUB的辐射源（12） > d）和检测器（20），其产生指示沿着多条光线接收的辐射的输出信号。 高度重建器（34）执行所获取的射线的高度重新生成以产生高度内插读数。 横向重构器（36）在规范空间中执行高度内插射线的二维横向内插，以产生多个横向内插读数（302）。 重建横向内插读数（302）以产生人类可读的图像。

公开(公告)号：WO2006136973A2

公开(公告)日：2006-12-28

申请号：PCT/IB2006/051889

申请日：2006-06-13

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  U.S. PHILIPS CORPORATION ,  SHECHTER, Gilad

Inventor： SHECHTER, Gilad

CPC classification number: A61B6/032 ,  A61B6/027 ,  A61B6/4085

Abstract: A subject is imaged at a preselected phase point (34) which occurs in one or more successive cardiac cycles as the subject moves in an examination region (16). An illumination window (94) illuminates each reconstructed voxel (A, B, C) of the subject in phase point windows (92) adjacent surroundingly the preselected phase point (34). A temporal window (90) is determined which includes an integer number N of successive cardiac cycles, in which the phase point windows (92) are entirely included in the illumination window (94). The illumination window (94) is truncated in accordance with the determined temporal window (90). First and second regions (72, 74) are determined along an axial direction (Z), the first and second regions (72, 74) alternating with one another. A temporal weighting profile processor (64) generates a projection dependent temporal weighting profile (66). A temporal window processor (102) applies the normalized backprojection weights for each voxel which lies in an associated first region. A varying weight processor (110) continuously smoothly weights readings for each voxel lying in an associated second region (74). A backprojection processor (120) three- dimensionally backprojects the weighted readings into a volumetric image representation.

Abstract translation: 当受试者在检查区域（16）中移动时，在一个或多个连续心脏周期中发生的预选相位点（34）成像对象。 照明窗口（94）照亮邻近预选相位点（34）的相位点窗口（92）中的被摄体的每个重建体素（A，B，C）。 确定包括连续心动周期的整数N的时间窗口（90），其中相位点窗口（92）完全包括在照明窗口（94）中。 照明窗（94）根据所确定的时间窗（90）被截断。 第一和第二区域（72,74）沿着轴向（Z）确定，第一和第二区域（72,74）彼此交替。 时间加权简档处理器（64）产生与投影有关的时间加权分布（66）。 时间窗口处理器（102）对位于相关联的第一区域中的每个体素应用归一化反投影权重。 不同重量的处理器（110）连续地平滑地重量位于相关联的第二区域（74）中的每个体素的读数。 背投影处理器（120）将加权读数三维地反投影成体积图像表示。

公开(公告)号：WO2003094115A1

公开(公告)日：2003-11-13

申请号：PCT/IL2002/000355

申请日：2002-05-06

Applicant: PHILIPS MEDICAL SYSTEMS TECHNOLOGIES LTD. ,  SHECHTER, Gilad

Inventor： SHECHTER, Gilad

IPC: G06T11/00

CPC classification number: A61B6/032 ,  A61B6/027 ,  A61B6/4085 ,  G06T11/006 ,  Y10S378/901

Abstract: CT scanner is disclosed for providing an image of a region comprising : at least one X-ray cone beam for illuminating mthe region with X-rays; a plurality of rows of X-ray detectors that generate signals responsive to line attenuation of X-rays from the at least one X-ray source that pass through the region; a controller that controlsproviding an image of a region comprising: at least one X-ray cone beam for illuminating the region with X-rays; a plurality of rows of X-ray detectors that generate signals responsive to line attenuation of X-rays from the at least one X-ray source that pass through the region; a controller that controls the at least one X-ray cone beam to acquire line attenuation data for the region for different view angles of the region; and a processor that receives the signals and: a) determines low spatial frequency components of the image from the data; b) generates a first spatial image of the region from the low frequency components; c) determines high spatial frequency components of the image from the data; d) generates a second spatial image of the region from the high frequency components; and e) combines the first and second images to generate the CT image.

Abstract translation: 公开了CT扫描器，用于提供区域的图像，包括：至少一个用X射线照射该区域的X射线锥形束; 多行X射线检测器，其产生响应来自穿过该区域的至少一个X射线源的X射线的线衰减的信号; 控制器，其控制对所述区域的图像进行调节，所述控制器包括：用X射线照射所述区域的至少一个X射线锥形束; 多行X射线检测器，其产生响应来自穿过该区域的至少一个X射线源的X射线的线衰减的信号; 控制器，其控制所述至少一个X射线锥形束以获取针对所述区域的不同视角的所述区域的线衰减数据; 以及处理器，其接收所述信号，并且：a）从所述数据确定所述图像的低空间频率分量; b）从低频分量产生该区域的第一空间图像; c）从数据中确定图像的高空间频率分量; d）从高频分量产生该区域的第二空间图像; 和e）组合第一和第二图像以产生CT图像。

公开(公告)号：WO2003092502A1

公开(公告)日：2003-11-13

申请号：PCT/IL2002/000354

申请日：2002-05-06

Applicant: PHILIPS MEDICAL SYSTEMS TECHNOLOGIES LTD. ,  SHECHTER, Gilad

Inventor： SHECHTER, Gilad

IPC: A61B6/03

CPC classification number: A61B6/4447 ,  A61B6/027 ,  A61B6/0457

Abstract: Computerized tomography apparatus for reconstructing attenuation values within a volume comprising: an x-ray source situated operative to rotate about said volume, in a rotation plane, while irradiating at least a portion of the volume; a plurality of rows of x-ray detectors illuminated by said rotating x-ray source situated on an opposite side of the volume; a patient support operative to move a patient through a space between the source and detectors at an angle to the normal to the rotation plane, while the x-ray detectors illuminate the detectors; and a controller operative to compute the angle based on at least one of a radius R of said rotation, a radius r of said volume and a helix pitch, m, defined as a distance the patient support moves during a single rotation of the x-ray source.

Abstract translation: 一种用于重建体积内的衰减值的计算机断层摄影装置，包括：x射线源，用于在照射所述体积的至少一部分的同时在旋转平面中围绕所述体积旋转; 由位于所述体积的相对侧上的所述旋转X射线源照射的多排X射线检测器; 患者支架可操作以使角度与旋转平面垂直的方向移动患者通过源和检测器之间的空间，同时x射线检测器照射检测器; 以及控制器，其可操作以基于所述旋转的半径R，所述体积的半径r和螺旋桨距m中的至少一个来计算角度，m定义为在x轴旋转期间患者支撑件移动的距离， 射线源。

公开(公告)号：WO2012056412A1

公开(公告)日：2012-05-03

申请号：PCT/IB2011/054782

申请日：2011-10-26

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  SHECHTER, Gilad

Inventor： SHECHTER, Gilad

IPC: A61B6/03 ,  G01N23/04 ,  G06T11/00

CPC classification number: G06T7/0004 ,  A61B6/032 ,  A61B6/4035 ,  A61B6/482 ,  A61B6/5205 ,  A61B6/5258 ,  G01N23/046 ,  G01N2223/419 ,  G06T11/005 ,  G06T2211/408

Abstract: A method includes extracting a fully sampled fixed kVp sinogram for a pre- determined kVp of interest from an under-sampled mixed kVp sinogram generated from a switched kVp computed tomography scan. A system includes a fixed sinogram extractor that extracts a fully sampled fixed kVp sinogram from an under-sampled mixed kVp sinogram from a switched kVp computed tomography scan. A method includes de-noising at least one of a fully sampled fixed kVp sinogram extracted from an under-sampled mixed kVp sinogram or the under-sampled mixed kVp sinogram by smoothing lower kVp measurements of the sinograms and sharpening higher kVp measurements of the sinograms.

Abstract translation: 一种方法包括从由切换的kVp计算机断层摄影扫描产生的未采样的混合kVp正弦图提取用于预先确定的感兴趣的kVp的完全采样的固定kVp正弦图。 系统包括一个固定的正弦图提取器，从切换的电压计算机断层摄影扫描中，从未采样的混合kVp正弦图提取完全采样的固定的kVp正弦图。 一种方法包括通过平滑较低的kVp测量的正弦图和锐化中心图的较高kVp测量来对从欠采样的混合kVp正弦图提取的完全采样的固定的kVp正弦图中的至少一个或未采样的混合的kVp正弦图进行去噪。

公开(公告)号：WO2007140094A2

公开(公告)日：2007-12-06

申请号：PCT/US2007/068539

申请日：2007-05-09

Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V. ,  U.S. PHILIPS CORPORATION ,  SHECHTER, Gilad ,  GRINGAUS, Asher ,  BAR, Yoav ,  LAVI, Guy

Inventor： SHECHTER, Gilad ,  GRINGAUS, Asher ,  BAR, Yoav ,  LAVI, Guy

IPC: G06T11/00

CPC classification number: G06T11/005 ,  A61B6/027 ,  G06T2211/404 ,  G06T2211/412

Abstract: Projection data (302) acquired during a tomographic examination of a periodically moving object is used to reconstruct a plurality of image layers (308). The image layers (308) are combined to generate image data at a desired phase of motion. To generate a weighting function used to combine the image layers, a reference weighting function (512) is generated at the desired phase. The image layers (308) are weighted to approximate the first weighting function (312). The number of image layers and the size of a sub-region of interest are advantageously selected so that the various image layers can be stored in a relatively high speed memory portion of a computer.

Abstract translation: 在周期性移动物体的断层摄影检查期间获取的投影数据（302）用于重建多个图像层（308）。 图像层（308）被组合以在期望的运动阶段产生图像数据。 为了产生用于组合图像层的加权函数，在期望的阶段产生参考加权函数（512）。 图像层（308）被加权以近似第一加权函数（312）。 有利地选择图像层的数量和感兴趣的子区域的大小，使得各种图像层可以存储在计算机的相对高速的存储器部分中。

公开(公告)号：WO2006006090A1

公开(公告)日：2006-01-19

申请号：PCT/IB2005/052079

申请日：2005-06-23

Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V. ,  U.S. PHILIPS CORPORATION ,  SHECHTER, Gilad ,  NAVEH, Galit

Inventor： SHECHTER, Gilad ,  NAVEH, Galit

IPC: A61B6/03

CPC classification number: G06T11/005 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4085 ,  A61B6/503 ,  A61B6/541 ,  G06T2211/412

Abstract: In a diagnostic imaging system (10) two-dimensional projection data is collected in a data memory (30). The data is sorted into the data sets collected during selected cardiac phases. A re-binning processor (38) re-bins the projection data into a parallel ray format. An adaptive filter (70) filters the parallel ray format data with each of a plurality of different filter channels based on a calculated photonic noise of each reading and assuming an arbitrary noise reduction factor, different for each filter channel. A convolver (78) convolves the data filtered with each of the filter channels. A noise reduction factor processor (84) determines the actual noise reduction factor occurring due to the weighted averaging of readings contributing to each voxel ν at an angle θ ε [0, 7π). A weighting processor (90) weights the convolved data from each of the filter channels based on the channels' noise reduction factors and the actual noise reduction factor. A backprojector (98) backprojects the combined weighted sum of projections to build an image representation that can be displayed in a human readable format.

Abstract translation: 在诊断成像系统（10）中，二维投影数据被收集在数据存储器（30）中。 数据被分类到在选定的心脏阶段收集的数据集。 重新分组处理器（38）将投影数据重新平行放入射线格式。 自适应滤波器（70）基于每个读取的计算的光子噪声并且假定每个滤波器通道不同的任意降噪因子，来对多个不同滤波器通道中的每一个滤波平行射线格式数据。 卷积器（78）卷积了每个滤波器通道滤波的数据。 噪声降低因子处理器（84）确定由于对每个体素有贡献的读数的加权平均而产生的实际噪声降低因子？ 在一个角度？ e [0，7p]。 加权处理器（90）基于信道的降噪因子和实际的噪声降低因子对来自每个滤波器信道的卷积数据进行加权。 背投影器（98）反投影组合加权的投影总和以构建可以以人类可读格式显示的图像表示。