公开(公告)号：WO2010041193A3

公开(公告)日：2010-04-15

申请号：PCT/IB2009/054353

申请日：2009-10-05

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  FORTHMANN, Peter ,  KOEHLER, Thomas ,  VAN STEVENDAAL, Udo ,  BERTRAM, Matthias ,  WIESNER, Steffen ,  SCHRETTER, Colas

Inventor： FORTHMANN, Peter ,  KOEHLER, Thomas ,  VAN STEVENDAAL, Udo ,  BERTRAM, Matthias ,  WIESNER, Steffen ,  SCHRETTER, Colas

IPC: G01N23/04 ,  A61B6/03

Abstract: A method and apparatus are provided to improve CT image acquisition using a displaced acquisition geometry. A CT apparatus may be used having a source (102) and a detector (104) transversely displaced from a center (114) of a field of view (118) during acquisition of the projection data. The amount of transverse displacement may be determined based on the size of the object (108). The source and the detector may be adjusted to vary the size of the transverse field of view. The first data set acquired by the detector may be reconstructed and used to simulate missing projection data that could not be acquired by the detector at each projection angle. The measured projection data and the simulated projection data may be used to obtain a second data set. The second data set may be compared to the first data set to produce a corrected data set.

公开(公告)号：WO2010041193A2

公开(公告)日：2010-04-15

申请号：PCT/IB2009054353

申请日：2009-10-05

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  FORTHMANN PETER ,  KOEHLER THOMAS ,  VAN STEVENDAAL UDO ,  BERTRAM MATTHIAS ,  WIESNER STEFFEN ,  SCHRETTER COLAS

Inventor： FORTHMANN PETER ,  KOEHLER THOMAS ,  VAN STEVENDAAL UDO ,  BERTRAM MATTHIAS ,  WIESNER STEFFEN ,  SCHRETTER COLAS

IPC: G01N23/04 ,  A61B6/03

CPC classification number: A61B6/032 ,  A61B5/107 ,  A61B6/027

Abstract: A method and apparatus are provided to improve CT image acquisition using a displaced acquisition geometry. A CT apparatus may be used having a source (102) and a detector (104) transversely displaced from a center (114) of a field of view (118) during acquisition of the projection data. The amount of transverse displacement may be determined based on the size of the object (108). The source and the detector may be adjusted to vary the size of the transverse field of view. The first data set acquired by the detector may be reconstructed and used to simulate missing projection data that could not be acquired by the detector at each projection angle. The measured projection data and the simulated projection data may be used to obtain a second data set. The second data set may be compared to the first data set to produce a corrected data set.

Abstract translation: 提供了一种方法和装置，用于改善使用位移采集几何形状的CT图像采集。 可以使用CT装置，在获取投影数据期间具有从视场（118）的中心（114）横向移位的源（102）和检测器（104）。 可以基于物体（108）的尺寸来确定横向位移量。 源和检测器可以被调节以改变横向视场的大小。 由检测器获取的第一数据集可以被重构并用于模拟在每个投影角度不能由检测器获取的丢失的投影数据。 所测量的投影数据和模拟投影数据可用于获得第二数据集。 可以将第二数据集与第一数据集进行比较以产生校正数据集。

公开(公告)号：WO2009063353A2

公开(公告)日：2009-05-22

申请号：PCT/IB2008/054589

申请日：2008-11-04

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  BERTRAM, Matthias ,  WIEGERT, Jens ,  VESEL, John, F. ,  SOWARDS-EMMERD, David ,  PETRILLO, Michael, J.

Inventor： BERTRAM, Matthias ,  WIEGERT, Jens ,  VESEL, John, F. ,  SOWARDS-EMMERD, David ,  PETRILLO, Michael, J.

IPC: A61B6/03 ,  G21K3/00

CPC classification number: A61B6/032 ,  A61B6/037 ,  A61B6/4035 ,  G21K1/10

Abstract: When generating a 3D image of a subject or patient, a cone beam X-ray source (20a, 20b) is mounted to a rotatable gantry (14) opposite an offset flat panel X-ray detector (22a, 22b). A wedge-shaped attenuation filter (24a, 24b) of suitable material (e.g., aluminum or the like) is adjustably positioned in the cone beam to selectively attenuate the beam as a function of the shape, size, and density of a volume of interest (18) through which X-rays pass in order to maintain X-ray intensity or gain at a relatively constant level within a range of acceptable levels.

Abstract translation: 当生成对象或患者的3D图像时，锥形束X射线源（20a，20b）被安装到与偏移平板X射线检测器（20a，20b）相对的可旋转机架（14） 22a，22b）。 合适材料（例如，铝等）的楔形衰减滤波器（24a，24b）可调节地定位在锥形束中，以根据感兴趣体积的形状，大小和密度选择性地衰减束 （18），为了将X射线强度或增益保持在可接受的水平范围内的相对恒定的水平，X射线通过所述水平线（18）。

公开(公告)号：WO2009004523A3

公开(公告)日：2009-01-08

申请号：PCT/IB2008/052482

申请日：2008-06-23

Applicant: PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  WIEGERT, Jens ,  BERTRAM, Matthias

Inventor： WIEGERT, Jens ,  BERTRAM, Matthias

IPC: G01T1/164

Abstract: A method, a computer program as well as a corresponding apparatus for eliminating scatter artefacts that corrupt an image of an object using computed tomography, wherein X-ray projections of the object are at least partially truncated, whereas the method comprises the steps of: reconstructing a truncated image of the object with a limited field of view from the projections; constructing a model of the object in an extended field of view using the truncated image of the object; deriving a scatter estimate by means of Monte-Carlo simulation using the model of object; correcting a projection of the object for X-ray scatter based on the scatter estimate; reconstructing a scatter-corrected image using the corrected projections.

公开(公告)号：WO2008004144A3

公开(公告)日：2008-03-06

申请号：PCT/IB2007052234

申请日：2007-06-13

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  ZEITLER GUENTER ,  BERTRAM MATTHIAS ,  BAEUMER CHRISTIAN

Inventor： ZEITLER GUENTER ,  BERTRAM MATTHIAS ,  BAEUMER CHRISTIAN

IPC: B67D1/08 ,  B67D7/06 ,  B67D7/80

CPC classification number: B67D1/0884 ,  B67D1/0888 ,  Y10T436/11 ,  Y10T436/115831

Abstract: The present invention is directed to a freshness indicator (9) for a chilled beverage and in particular to a beverage dispensing device (1) with a freshness indicator (9) for a chilled beverage, wherein the beverage dispensing device (1) comprises an outer housing (7), a tapping device (2) for dispensing a beverage, a beverage container (4) being placeable in the outer housing (7) and connectable with the tapping device (2), and the outer housing (7) functioning as a chiller (8), characterized in that the beverage freshness indicator device (9) comprises: a display (10) for indicating the storage temperature, maximum storage period, actual freshness of the beverage, the time left until expiry of the freshness and/or the date of expiry of the freshness, a data input unit (11) for the input of data and/or means (12) for recording replacement of the beverage container (4), at least one temperature sensor (13) for measuring the storage temperature of the beverage, - a temperature controller (14) for adjusting the cooling temperature of the chiller (8), a data storage unit (15) for storing the freshness criteria, a signal processing unit (16), which temperature sensor (13) transmits a signal regarding the current beverage storage temperature to the signal processing unit (16) and the signal processing unit (16) calculates, depending on the recorded storage temperature period and based on stored freshness criteria, the actual freshness of the beverage, the time left until expiry of the freshness of the beverage and/or the date of expiry of the freshness of the beverage, and the signal processing unit (16) transmits the calculated data to the display (10).

Abstract translation: 本发明涉及一种用于冷冻饮料的新鲜度指示器（9），特别涉及一种具有用于冷冻饮料的新鲜度指示器（9）的饮料分配装置（1），其中所述饮料分配装置（1）包括外部 壳体（7），用于分配饮料的抽头装置（2），可放置在外壳体（7）中并可与排放装置（2）连接的饮料容器（4），以及作为 一种冷冻机（8），其特征在于，饮料新鲜度指示装置（9）包括：显示器（10），用于指示储存温度，最大储存期间，饮料的实际新鲜度，剩余时间直到新鲜度和/ 或新鲜度期满的日期，用于输入数据的数据输入单元（11）和/或用于记录饮料容器（4）的更换的装置（12），至少一个温度传感器（13），用于测量 饮料的储存温度，温度控制器 用于调节冷却器（8）的冷却温度的r（14），用于存储新鲜度标准的数据存储单元（15），该温度传感器（13）传送关于当前饮料的信号的信号处理单元（16） 信号处理单元（16）和信号处理单元（16）的存储温度根据记录的存储温度周期并基于存储的新鲜度标准计算饮料的实际新鲜度，直到剩余时间为止 饮料和/或饮料新鲜度到期的日期，信号处理单元（16）将计算出的数据发送到显示器（10）。

公开(公告)号：WO2006082557A3

公开(公告)日：2006-11-02

申请号：PCT/IB2006050329

申请日：2006-01-31

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY ,  BERTRAM MATTHIAS ,  WIEGERT JENS

Inventor： BERTRAM MATTHIAS ,  WIEGERT JENS

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

CPC classification number: G01N23/04 ,  A61B6/583 ,  G06T11/005 ,  G06T2211/424

Abstract: The present invention relates to an apparatus for iterative scatter correction of a data set of x-ray projections (10) of an object (1) for generation of a reconstruction image of said object. In particular for correction of artifacts caused by scatter or a truncation of x- ray projections, an apparatus is proposed, which requires less computational effort and which thus allows a correction in real-time, comprising: a model estimation unit (41) for estimating model parameters of an object model for said object by an iterative optimization of a deviation of forward projections, calculated by use of said object model and the geometry parameters for said x-ray projections, from the corresponding x-ray projections, - a scatter estimation unit (42) for estimating the amount of scatter present in said x-ray projections by use of said object model, and a correction unit (43) for correcting said x-ray projections by subtracting the estimated amount of scatter from said x-ray projections for determining an optimized object model using said corrected x-ray projections, said optimized object model being used in another iteration of said scatter correction, said scatter correction being iteratively carried out until a predetermined stop criterion has been reached. Further, corresponding apparatus for extension of truncated projections and a reconstruction apparatus is proposed.

Abstract translation: 本发明涉及一种用于对物体（1）的X射线投影（10）的数据集进行迭代散射校正的装置，用于生成所述物体的重建图像。 特别是为了校正由散射或截断X射线投影引起的伪影，提出了一种装置，该装置需要较少的计算量并且因此允许实时校正，该装置包括：模型估计单元（41），用于估计 用于所述对象的对象模型的模型参数通过正向投影的偏差时，通过使用所述对象模型和所述X射线投影，从相应的X射线投影，几何参数计算的迭代优化 - 一散射估计 单元（42），用于估计散射存在的量的所述通过使用所述对象模型的X射线投影，以及用于校正的校正单元（43），由所述从减去散射的估计量X射线投影所述x射线 用于使用所述校正的X射线投影来确定优化对象模型的投影，所述优化对象模型用于所述散射校正的另一次迭代中，所述散射校正是 迭代地执行直到达到预定的停止标准。 此外，提出了用于延长截断投影的相应装置和重建装置。

公开(公告)号：WO2006082557A2

公开(公告)日：2006-08-10

申请号：PCT/IB2006/050329

申请日：2006-01-31

Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  BERTRAM, Matthias ,  WIEGERT, Jens

Inventor： BERTRAM, Matthias ,  WIEGERT, Jens

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

CPC classification number: G01N23/04 ,  A61B6/583 ,  G06T11/005 ,  G06T2211/424

Abstract: The present invention relates to an apparatus for iterative scatter correction of a data set of x-ray projections (10) of an object (1) for generation of a reconstruction image of said object. In particular for correction of artifacts caused by scatter or a truncation of x- ray projections, an apparatus is proposed, which requires less computational effort and which thus allows a correction in real-time, comprising: a model estimation unit (41) for estimating model parameters of an object model for said object by an iterative optimization of a deviation of forward projections, calculated by use of said object model and the geometry parameters for said x-ray projections, from the corresponding x-ray projections, - a scatter estimation unit (42) for estimating the amount of scatter present in said x-ray projections by use of said object model, and a correction unit (43) for correcting said x-ray projections by subtracting the estimated amount of scatter from said x-ray projections for determining an optimized object model using said corrected x-ray projections, said optimized object model being used in another iteration of said scatter correction, said scatter correction being iteratively carried out until a predetermined stop criterion has been reached. Further, corresponding apparatus for extension of truncated projections and a reconstruction apparatus is proposed.

Abstract translation: 本发明涉及用于产生所述对象的重建图像的对象（1）的X射线投影（10）的数据集的迭代散射校正的装置。 特别是对于由X射线投影的分散或截断引起的伪像的校正，提出了一种需要较少计算量并因此允许实时校正的装置，包括：估计模型估计单元（41），用于估计 通过使用所述对象模型计算的前向投影的偏差和所述x射线投影的几何参数从对应的x射线投影的迭代优化，对所述对象的对象模型的模型参数，散射估计 单元（42），用于通过使用所述对象模型来估计存在于所述x射线投影中的散射量;以及校正单元（43），用于通过从所述x射线减去估计的散射量来校正所述x射线投影 用于使用所述校正的x射线投影确定优化对象模型的投影，所述优化对象模型用于所述散射校正的另一次迭代，所述散射校正是 迭代地执行直到达到预定的停止标准。 此外，提出了用于扩展截断投影的相应装置和重建装置。