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1. 发明申请

WO2009083851A1 SYNCHRONOUS INTERVENTIONAL SCANNER 审中-公开
标题翻译：同步传统扫描仪
公开(公告)号：WO2009083851A1
公开(公告)日：2009-07-09
申请号：PCT/IB2008/055275
申请日：2008-12-12
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , HEUSCHER, Dominic, J.
发明人： HEUSCHER, Dominic, J.
IPC分类号： A61B6/03 , A61B6/12
CPC分类号： A61B6/032 , A61B6/027 , A61B6/06 , A61B6/107 , A61B6/12 , A61B6/4441 , A61B6/542 , A61B6/547 , A61B34/20 , A61B2090/3762
摘要： When performing an interventional CT scan on a subject, radiation dose is limited by employing a dynamic collimator (142) that collimates X-rays emitted by an X- ray source (112). The X-ray source (112) and collimator (142) rotate around a VOI (122) in the subject, and move axially along the VOI (122) to maintain the tip of a medical instrument (144) within the field of view of the narrow cone beam. An instrument tracking component (146) maintains information related to previous and current positions of the instrument (144) relative to the VOI (122) and facilitates tracking the instrument as it moves through the VOI (122). A user interface (136) superimposes images of a sub-region of the VOI (122) in which the instrument tip is located onto a pre-generated diagnostic image for viewing by an operator, to track the medical instrument (144).
摘要翻译：当对受试者进行介入CT扫描时，通过使用准直X射线源（112）发射的X射线的动态准直器（142）来限制辐射剂量。 X射线源（112）和准直器（142）围绕对象的VOI（122）旋转，并沿着VOI（122）轴向移动，以将医疗器械（144）的尖端保持在窄锥形梁。仪器跟踪部件（146）保持与仪器（144）相对于VOI（122）的先前和当前位置相关的信息，并且便于当仪器通过VOI（122）时跟踪仪器。用户界面（136）将仪器尖端所在的VOI（122）的子区域的图像叠加到预先生成的诊断图像上以供操作者观看以跟踪医疗器械（144）。

2. 发明申请

WO2009056999A2 PROSPECTIVE CARDIAC GATING IN COMPUTED TOMOGRAPHY 审中-公开
标题翻译：前瞻性心脏病在计算机断层摄影中的应用
公开(公告)号：WO2009056999A2
公开(公告)日：2009-05-07
申请号：PCT/IB2008/054031
申请日：2008-10-02
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , HEUSCHER, Dominic, J. , ZABIC, Stanislav
发明人： HEUSCHER, Dominic, J. , ZABIC, Stanislav
IPC分类号： A61B6/00
CPC分类号： A61B6/541 , A61B6/027 , A61B6/503
摘要： A computed tomography scanner (10) acquires prospectively gated cardiac projection data. A scan controller (42) causes the scanner (10) to acquire projection data at the predicted location of a target cardiac phase in a cardiac cycle of the patient. An error determiner (44) determines an error between the target phase and the phase at which the projection data was actually acquired. Depending on the error, the patient is rescanned in a subsequent cardiac cycle.
摘要翻译：计算机断层摄影扫描仪（10）获取前瞻性门控心脏投影数据。扫描控制器（42）使得扫描仪（10）获取患者的心动周期中目标心脏时相的预测位置处的投影数据。错误确定器（44）确定目标相位与实际获取投影数据的相位之间的误差。根据错误情况，患者在随后的心动周期内重新扫描。

3. 发明申请

WO2010052614A1 CONE BEAM Z-AXIS COVERAGE 审中-公开
标题翻译： CONE光束Z轴覆盖
公开(公告)号：WO2010052614A1
公开(公告)日：2010-05-14
申请号：PCT/IB2009/054790
申请日：2009-10-28
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , BROWN, Kevin, M. , HEUSCHER, Dominic, J.
发明人： BROWN, Kevin, M. , HEUSCHER, Dominic, J.
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/4021 , A61B6/4085 , A61B6/5258 , A61B6/5282
摘要： An imaging system includes a radiation source (110) with an anode (202). The radiation source (110) rotates around an examination region (106) about a longitudinal axis (108) and emits radiation from a focal spot (206) on the anode (202). A source collimator (112) collimates the emitted radiation to produce a generally conically shaped radiation beam that traverses the examination region. The generally conically shaped radiation beam has an extended cone angle along the longitudinal axis that is greater than an effective maximum cone angle determined by an anode angle of the anode (202). A detector array (116) detects radiation that traverses the examination region and generates signals indicative thereof. A reconstructor (118) reconstructs the signals to generate volumetric image data indicative of the examination region.
摘要翻译：成像系统包括具有阳极（202）的辐射源（110）。辐射源（110）围绕纵向轴线（108）围绕检查区域（106）旋转，并且从阳极（202）上的焦点（206）发射辐射。源准直器（112）准直所发射的辐射以产生穿过检查区域的大致圆锥形的辐射束。大致圆锥形的辐射束沿着纵向轴线具有大于由阳极（202）的阳极角确定的有效最大锥角的扩展锥角。检测器阵列（116）检测穿过检查区域的辐射并产生指示其的信号。重建器（118）重建信号以产生指示检查区域的体积图像数据。

4. 发明申请

WO2009083850A1 DYNAMIC COLLIMATION IN CONE BEAM COMPUTED TOMOGRAPHY TO REDUCE PATIENT EXPOSURE 审中-公开
标题翻译：锥体计算机图像中的动态收缩以减少患者的接触
公开(公告)号：WO2009083850A1
公开(公告)日：2009-07-09
申请号：PCT/IB2008/055269
申请日：2008-12-12
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , HEUSCHER, Dominic, J. , PEETERS, Godfried, P.
发明人： HEUSCHER, Dominic, J. , PEETERS, Godfried, P.
IPC分类号： A61B6/03
CPC分类号： A61B6/06 , A61B6/027 , A61B6/4085 , A61B6/4447 , A61B6/542
摘要： When performing a fly-by or helical CT scan of a subject, radiation dose is limited by positioning a dynamic collimator (142) between the subject and an X-ray source (112). The collimator moves axially with the X-ray source (112) along a volume of interest (VOI) (122) in the subject and gradually opens, such that a narrow portion of the cone beam of X-rays is permitted to pass through the collimator (142) at ends of the VOI (122) and a wider full cone beam is emitted at central portions of the VOI (122). In this manner, tissue surrounding the VOI (122) is not needlessly exposed to X-rays, as would be the case if a full-width cone beam were used for the entire scan of the VOI (122).
摘要翻译：当对受试者进行飞行或螺旋CT扫描时，通过在对象和X射线源（112）之间定位动态准直器（142）来限制辐射剂量。准直器沿X射线源（112）沿着受试者的感兴趣体积（VOI）（122）轴向移动并逐渐打开，使得X射线锥形束的窄部分被允许通过在VOI（122）的端部处的准直器（142）和更宽的全锥形束在VOI（122）的中心部分处被发射。以这种方式，围绕VOI（122）的组织不会不必要地暴露于X射线，如同使用全角锥形束用于VOI（122）的整个扫描的情况一样。

5. 发明申请

WO2006038142A1 IMAGE RECONSTRUCTION WITH VOXEL DEPENDENT INTERPOLATION 审中-公开
标题翻译：具有VOXEL依赖插值的图像重建
公开(公告)号：WO2006038142A1
公开(公告)日：2006-04-13
申请号：PCT/IB2005/053148
申请日：2005-09-22
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , ZIEGLER, Andy , KOEHLER, Thomas , NIELSEN, Tim , PROKSA, Roland , HEUSCHER, Dominic, J.
发明人： ZIEGLER, Andy , KOEHLER, Thomas , NIELSEN, Tim , PROKSA, Roland , HEUSCHER, Dominic, J.
IPC分类号： G06T11/00
CPC分类号： G06T11/006
摘要： A radiographic imaging apparatus includes a radiation detector (16) and a radiation source (12) which projects a non-parallel beam of radiation into field of view (14). A footprint of each voxel (v) which is projected on the detector (16) is corrected based on the position of the voxel (v) in the field of view (14) in relation to the radiation detector (16) and the radiation source (12). The contributions from substantially parallel redundant projections are further combined based on a fractional distance frac from a center point (82) of the voxel (v) to a center of each of the adjacent redundant projections.
摘要翻译：放射线照相成像装置包括辐射检测器（16）和辐射源（12），其将非平行辐射束投射到视场（14）中。基于在视场（14）中相对于放射线检测器（16）的体素（v）的位置和辐射源（v）来校正投影在检测器（16）上的每个体素（v）的足迹（12）。基于分数距离

6. 发明申请

WO2004072904A1 SYSTEM AND METHOD FOR EXACT IMAGE RECONSTRUCTION FOR HELICAL CONE BEAM COMPUTED TOMOGRAPHY INCLUDING REDUNDANT DATA 审中-公开
标题翻译：用于实时图像重建的系统和方法，用于包括冗余数据的螺旋锥束计算机图
公开(公告)号：WO2004072904A1
公开(公告)日：2004-08-26
申请号：PCT/IB2004/000365
申请日：2004-02-09
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HEUSCHER, Dominic, J. , BROWN, Kevin, M.
发明人： HEUSCHER, Dominic, J. , BROWN, Kevin, M.
IPC分类号： G06T11/00
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/416
摘要： A conebeam computed tomography scanner (10) acquires conebeam projection data along a generally helical source trajectory around an examination region (14). An exact reconstruction processor (40) includes a convolution processor (42) and an aperture weighted backprojection processor (46, 66). The convolution processor (42) performs at least one convolution of the acquired projection data. The convolving operates on projection data falling within an exact reconstruction window (38) and on at least some redundant projection data falling outside the exact reconstruction window (38) to produce convolved projection data. The aperture-weighted backprojection processor (46, 66) performs aperture-weighted backprojecting of the convolved projection data using an aperture weighting function that weightedly combines at least some convolved redundant projection data with convolved projection data falling within the exact reconstruction window (38) to generate a reconstructed image with contributions from redundant projection data.
摘要翻译：锥束计算机断层摄影扫描器（10）沿着围绕检查区域（14）的大致螺旋状的源轨迹获取锥束投影数据。精确重建处理器（40）包括卷积处理器（42）和孔径加权反投影处理器（46,66）。卷积处理器（42）执行所获取的投影数据的至少一个卷积。所述卷积对落在精确重构窗口（38）内的投影数据和落在精确重建窗口（38）之外的至少一些冗余投影数据进行操作以产生卷积投影数据。孔径加权反投影处理器（46,66）使用孔径加权函数来执行卷积投影数据的孔径加权反投影，所述孔径加权函数将至少一些卷积的冗余投影数据与落在精确重建窗口（38）内的卷积投影数据加权地组合到生成具有来自冗余投影数据的贡献的重建图像。

7. 发明申请

WO2004072905A1 SYSTEM AND METHOD FOR HELICAL CONE-BEAM COMPUTED TOMOGRAPHY WITH EXACT RECONSTRUCTION 审中-公开
标题翻译：用于具有精确重建的螺旋锥体计算机图像的系统和方法
公开(公告)号：WO2004072905A1
公开(公告)日：2004-08-26
申请号：PCT/IB2004/000386
申请日：2004-02-09
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HEUSCHER, Dominic, J. , NOO, Frederic, N. , BROWN, Kevin, M. , PACK, Jed, D.
发明人： HEUSCHER, Dominic, J. , NOO, Frederic, N. , BROWN, Kevin, M. , PACK, Jed, D.
IPC分类号： G06T11/00
CPC分类号： G06T11/006 , A61B6/027 , G06T2211/416 , G06T2211/421
摘要： A helical conebeam computed tomography imaging system includes an x-ray source (12) that produces an x ray conebeam, and an x-ray detector array (16) that detects the x ray conebeam after passing through an examination region (14). The x-ray detector array (16) generates projection data in a detector coordinate system defined with reference to the detector array (16). A derivative processor (60) computes a derivative of the projection data with respect to a helix angle of the helical trajectory at fixed projection direction to generate differentiated projection data. A convolution processor (64) convolves the differentiated projection data with a kernel function to produce filtered projection data. The convolving is performed in the detector coordinate system. A backprojector (42, 82) backprojects the filtered projection data to obtain an image representation.
摘要翻译：螺旋锥束计算机断层摄影成像系统包括产生x射线锥束的X射线源（12）和在通过检查区域（14）之后检测x射线锥束的x射线检测器阵列（16）。 X射线检测器阵列（16）在参考检测器阵列（16）定义的检测器坐标系中产生投影数据。衍生处理器（60）计算相对于在固定投影方向的螺旋轨迹的螺旋角的投影数据的导数，以产生微分投影数据。卷积处理器（64）将差分投影数据与内核函数进行卷积，以产生经滤波的投影数据。在检测器坐标系中进行卷积。背投影机（42,82）反投影经过滤的投影数据以获得图像表示。

8. 发明申请

WO2004037087A3 METHOD AND APPARATUS FOR ECG GATED VOLUMETRIC CARDIAC COMPUTED TOMOGRAPHY IMAGING 审中-公开
公开(公告)号：WO2004037087A3
公开(公告)日：2004-05-06
申请号：PCT/IB2003/004469
申请日：2003-10-09
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , U.S. PHILIPS CORPORATION
发明人： JOHNSON, Peter, C. , CHANDRA, Shalabh , SHRETER, Uri , STEINBERG, Ammon , HEUSCHER, Dominic, J.
IPC分类号： A61B6/03
摘要： In a diagnostic cardiac imaging session of a patient's heart using a computed tomography imaging scanner (10) and a cardiac cycle monitor (42), a diagnostic objective (100) is received. Survey imaging (104) of the heart is performed to determine optimized imaging parameter values for the received diagnostic objective (100). Monitor imaging (108) of a limited portion of the heart is performed during influx of a contrast agent (22) using a low patient x ray exposure condition to detect a trigger condition. Volume imaging (110) of the heart responsive to detection of the trigger condition is performed using the optimized imaging parameter values to obtain volumetric imaging data. Cardiac cycle data is recorded during at least a portion of the survey imaging (104), the monitor imaging (108), and the volume imaging (110). High resolution reconstructing (130) of at least some volumetric imaging data is performed to produce high resolution image representations (132).

9. 发明申请

WO2009141766A2 DYNAMIC ADJUSTABLE SOURCE COLLIMATION DURING FLY-BY SCANNING 审中-公开
标题翻译：动态扫描期间的动态可调源数据收集
公开(公告)号：WO2009141766A2
公开(公告)日：2009-11-26
申请号：PCT/IB2009/051986
申请日：2009-05-13
申请人： KONINKLIJKE PHILIPS ELECTRONICS, N.V. , HEUSCHER, Dominic, J.
发明人： HEUSCHER, Dominic, J.
IPC分类号： G06T11/00 , A61B6/00
CPC分类号： A61B6/032 , A61B6/027 , A61B6/035 , A61B6/06 , A61B6/4085 , A61B6/4476 , A61B6/466 , A61B6/503 , A61B6/542
摘要： A medical imaging system (100) includes a radiation source (112) that rotates around an examination region about a longitudinal axis and emits radiation while translating in a direction of the longitudinal axis during a fly-by scan. A source collimator (114) collimates the emitted radiation during the fly-by scan to form a generally conical shaped radiation beam that traverses the examination region. The source collimator (114) dynamically varies collimation during the scan so as to increase and decrease a width of the radiation beam in the longitudinal axis direction during the scan. A detector array (122) detects radiation that traverses the examination region and generates signals indicative thereof. A reconstructor (126) reconstructs the signals to generate volumetric image data indicative of the examination region.
摘要翻译：医疗成像系统（100）包括辐射源（112），辐射源围绕纵向轴线的检查区域旋转，并且在飞行扫描期间沿纵向轴线的方向发射辐射。源准直器（114）在飞越扫描期间校准所发射的辐射，以形成穿过检查区域的大致圆锥形的辐射束。源准直器（114）在扫描期间动态地改变准直，以便在扫描期间增加和减小辐射束在纵向轴线方向上的宽度。检测器阵列（122）检测穿过检查区域并产生指示其的信号的辐射。重建器（126）重建信号以产生指示检查区域的体积图像数据。

10. 发明申请

WO2009133530A1 SOURCE AND/OR DETECTOR POSITIONING SYSTEM 审中-公开
标题翻译：源和/或检测器定位系统
公开(公告)号：WO2009133530A1
公开(公告)日：2009-11-05
申请号：PCT/IB2009/051764
申请日：2009-04-30
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH , THRAN, Axel , BONTUS, Claas , FORTHMANN, Peter , PROKSA, Roland , SHARPLESS, Ronald, B. , HEUSCHER, Dominic, J. , PEETERS, Felix , SOETENS, Johannes, Bathazar, Maria
发明人： THRAN, Axel , BONTUS, Claas , FORTHMANN, Peter , PROKSA, Roland , SHARPLESS, Ronald, B. , HEUSCHER, Dominic, J. , PEETERS, Felix , SOETENS, Johannes, Bathazar, Maria
IPC分类号： A61B6/03
CPC分类号： A61B6/4447 , A61B6/06 , A61B6/4021
摘要： A medical imaging system includes a generally stationary gantry (102) and a rotating gantry (106), rotatably supported by the generally stationary gantry (102), that rotates about a longitudinal axis around an examination region. The medical imaging system further includes a radiation source (112) that emits a radiation beam that traverses the examination region. The radiation source (112) is moveably affixed to the rotating gantry (106) so as to translate in a direction of the longitudinal axis with respect to the rotating gantry (106) while scanning a subject in the examination region. The medical imaging system further includes a detector array (120) that detects the radiation beam that traverses the examination region and generates a signal indicative thereof. The detector array (120) is moveably affixed to the rotating gantry (106) so as to move in coordination with the radiation source (112) while scanning the subject in the examination region.
摘要翻译：医疗成像系统包括大致固定的机架（102）和旋转支架（106），旋转机架（106）由大体上固定的机架（102）可旋转地支撑，围绕检查区域围绕纵向轴线旋转。医疗成像系统还包括发射穿过检查区域的辐射束的辐射源（112）。辐射源（112）可移动地固定到旋转机架（106）上，以便在扫描检查区域中的被检体的同时相对于旋转台架（106）在纵向轴线的方向上平移。医疗成像系统还包括检测器阵列（120），其检测穿过检查区域的辐射束并产生指示其的信号。检测器阵列（120）可移动地固定到旋转机架（106），以在扫描检查区域中的对象时与辐射源（112）协调地移动。

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