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1. 发明申请

WO2006136973A3 BANDS ARTIFACT REDUCTION FOR CARDIAC CT IMAGING 审中-公开
标题翻译：用于CARDIAC CT成像的BANDS ARTIFACT减少
公开(公告)号：WO2006136973A3
公开(公告)日：2007-07-26
申请号：PCT/IB2006051889
申请日：2006-06-13
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS CORP , SHECHTER GILAD
发明人： SHECHTER GILAD
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4085
摘要： 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.
摘要翻译：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。时间加权分布处理器（64）产生依赖于投影的时间加权分布（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为体积图像表示。

2. 发明申请

WO2007026273A3 IMPROVED REBINNING FOR COMPUTED TOMOGRAPHY IMAGING 审中-公开
标题翻译：改进的重建计算机断层摄影成像
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
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS CORP , SHECHTER GILAD
发明人： SHECHTER GILAD
IPC分类号： G01T1/29
CPC分类号： G01T1/2985 , Y10S378/901
摘要： 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.
摘要翻译：一种层析成像设备包括：具有多个焦点（F _{a ，F _{b ，F _{c ，F}}}

3. 发明申请

WO2007140094A3 DYNAMIC COMPUTED TOMOGRAPHY IMAGING 审中-公开
标题翻译：动态计算机图像成像
公开(公告)号：WO2007140094A3
公开(公告)日：2008-01-17
申请号：PCT/US2007068539
申请日：2007-05-09
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS CORP , SHECHTER GILAD , GRINGAUS ASHER , BAR YOAV , LAVI GUY
发明人： SHECHTER GILAD , GRINGAUS ASHER , BAR YOAV , LAVI GUY
IPC分类号： G06T11/00
CPC分类号： G06T11/005 , A61B6/027 , G06T2211/404 , G06T2211/412
摘要： 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.
摘要翻译：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。

4. 发明申请

WO2008075267A3 DEVICE AND METHOD FOR IMAGING AN OBJECT 审中-公开
标题翻译：用于成像对象的设备和方法
公开(公告)号：WO2008075267A3
公开(公告)日：2008-08-14
申请号：PCT/IB2007055083
申请日：2007-12-13
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS INTELLECTUAL PROPERTY , SHECHTER GILAD , GLASBERG SHMUEL , VAN STEVENDAAL UDO , FORTHMANN PETER , KOEHLER THOMAS , BONTUS CLAAS
发明人： SHECHTER GILAD , GLASBERG SHMUEL , VAN STEVENDAAL UDO , FORTHMANN PETER , KOEHLER THOMAS , BONTUS CLAAS
IPC分类号： A61B6/06
CPC分类号： A61B6/06
摘要： 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).
摘要翻译：用于对受试者（4,44）感兴趣的体积（5,45）进行成像的成像装置（100,200）包括用于发射辐射（6）的辐射源（1），其布置成围绕轴线（8 ），用于在穿过被摄体（4,44）之前至少在被检体（4,44）的轴向上校准辐射（6）的准直器（3），检测器（4,44） 2），用于接收已经穿过被摄体的准直辐射（11,12,13,14,15,16），以及用于至少基于控制单元（7）控制准直仪（3）的控制单元（7）一个几何参数，其定义感兴趣的体积（5,45）和成像装置（100,200）之间的几何关系。成像装置（100,200）提供施加到对象的减少剂量的辐射（4,44）。

5. 发明申请

WO2004075119A3 IMPROVED TEMPORAL RESOLUTION FOR MULTI-SLICE CARDIAC CT 审中-公开
标题翻译：改进的多级心脏CT的时间分辨率
公开(公告)号：WO2004075119A3
公开(公告)日：2005-02-03
申请号：PCT/IL0300699
申请日：2003-08-25
申请人： KONINKL PHILIPS ELECTRONICS NV , SHECHTER GILAD , GRASS MICHAEL
发明人： SHECHTER GILAD , GRASS MICHAEL
IPC分类号： A61B6/00 , A61B6/03 , G06T11/00 , G06T7/20
CPC分类号： A61B6/541 , A61B6/027 , A61B6/032 , A61B6/4085 , A61B6/503 , G06T11/005 , G06T2211/412
摘要： There is therefore provided in accordance with an embodiment of the present invention, a CT scanner for providing an image of a region a patient's heart 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 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 illuminate the patient with X-rays so as to acquire attenuation data for the region during a plurality of heart cycles; and a processor that receives the signals and: determines a duration, 2DtM, of at least one imaging window centered at the heart phase of each of the heart cycles for each voxel of the region independent of determining the duration of the at least one imaging window for the other voxels; determines an attenuation value for each voxel using substantially only attenuation data acquired during the at least one window; and generates the image of the region using the determined attenuation values.
摘要翻译：因此，根据本发明的实施例提供了一种用于提供患者心脏区域的图像的CT扫描器，包括：用于用X射线照射该区域的至少一个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射线衰减的信号; 控制器，其控制所述至少一个X射线锥束以X射线照射所述患者，以便在多个心脏周期期间获取所述区域的衰减数据; 以及处理器，其接收所述信号，并且：确定至少一个成像窗口的持续时间2DtM，所述至少一个成像窗口以所述区域中的每个体素的每个心脏周期的心脏相位为中心，与确定所述至少一个成像窗口的持续时间无关为其他体素; 使用基本上仅在所述至少一个窗口期间获取的衰减数据来确定每个体素的衰减值; 并使用所确定的衰减值产生该区域的图像。

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