Automatic motion map generation in helical CT
    1.
    发明授权
    Automatic motion map generation in helical CT 有权
    螺旋CT中自动运动图生成

    公开(公告)号:US08478013B2

    公开(公告)日:2013-07-02

    申请号:US12787166

    申请日:2010-05-25

    IPC分类号: G06K9/00 A61B6/00

    CPC分类号: G06T11/005 G06T2211/412

    摘要: As an illustration of generating a motion map, although the cardiac CT is described for selecting an optimal phase, the disclosure is not limited to the cardiac CT. For the cardiac CT, the cardiac phase map is efficiently generated based upon helical scan data, and the optimal phase is selected within a reasonable time. At the same time, the optimal phase is accurately determined based upon complementary rays as indexes for minimal movement so as to select the projection data for minimizing artifacts in reconstructed cardiac images. The helically scanned data reflect motion within the same cardiac cycle or over the continuous cardiac cycles. The application of the complementary ray technique to the helically scanned data is accomplished by three-dimensionally determining a pair of the complementary rays in order to take into account motion within the same cardiac cycle or over the continuous cardiac cycles. The absolute sum of the differences for the top ray and or the bottom ray is determined in order to determine the amount of cardiac motion.

    摘要翻译: 作为生成运动图的说明,虽然描述了用于选择最佳相位的心脏CT,但是本公开不限于心脏CT。 对于心脏CT,基于螺旋扫描数据有效地生成心脏相位图,并且在合理的时间内选择最佳相位。 同时,基于互补射线作为最小运动的指标精确地确定最佳相位,以便选择用于最小化重建的心脏图像中的假象的投影数据。 螺旋扫描的数据反映在相同的心动周期或连续的心动周期内的运动。 将互补射线技术应用于螺旋扫描的数据是通过三维地确定一对互补射线来实现的,以便考虑在相同的心动周期内或在连续的心动周期上的运动。 确定顶部射线和/或底部射线的差异的绝对总和以确定心脏运动的量。

    METHOD AND SYSTEM FOR TOMOGRAPHIC RECONSTRUCTION IN MEDICAL IMAGING USING THE CIRCLE AND LINE TRAJECTORY
    2.
    发明申请
    METHOD AND SYSTEM FOR TOMOGRAPHIC RECONSTRUCTION IN MEDICAL IMAGING USING THE CIRCLE AND LINE TRAJECTORY 有权
    使用圆线和线路拍摄的医学成像中的图像重建方法和系统

    公开(公告)号:US20100283779A1

    公开(公告)日:2010-11-11

    申请号:US12445757

    申请日:2007-11-26

    IPC分类号: G06T15/00

    摘要: A method of reconstructing a volume image of an object includes receiving circle projection data collected by a detector along a circular path with respect to the object; receiving line projection data collected by the detector along a linear path with respect to the object; producing a reconstructed circle path volume image of the object from the pre-processed circle projection data using a reconstruction algorithm that includes a ramp filter; producing a reconstructed line path volume image of the object from pre-processed line projection data using a reconstruction algorithm that includes a Hubert filter; and combining the reconstructed circle path volume image and the reconstructed line path volume image to produce the volume image of the object. An apparatus and computer program product are also described.

    摘要翻译: 一种重建对象的体积图像的方法包括:接收由检测器沿相对于对象的圆形路径收集的圆投影数据; 沿着相对于物体的线性路径接收由检测器收集的线投影数据; 使用包括斜坡滤波器的重构算法从预处理的圆投影数据产生对象的重建圆路径体积图像; 使用包括胡伯特滤波器的重建算法从预处理线投影数据产生所述对象的重构线路体积图像; 并且将重构的圆路径体积图像和重建的线路体积图像组合以产生对象的体积图像。 还描述了一种装置和计算机程序产品。

    Method and system for tomographic reconstruction in medical imaging using the circle and line trajectory
    3.
    发明授权
    Method and system for tomographic reconstruction in medical imaging using the circle and line trajectory 有权
    使用圆线和线轨迹进行医学成像断层扫描重建的方法和系统

    公开(公告)号:US08270559B2

    公开(公告)日:2012-09-18

    申请号:US12445757

    申请日:2007-11-26

    IPC分类号: A61B6/00

    摘要: A method of reconstructing a volume image of an object includes receiving circle projection data collected by a detector along a circular path with respect to the object; receiving line projection data collected by the detector along a linear path with respect to the object; producing a reconstructed circle path volume image of the object from the pre-processed circle projection data using a reconstruction algorithm that includes a ramp filter; producing a reconstructed line path volume image of the object from pre-processed line projection data using a reconstruction algorithm that includes a Hubert filter; and combining the reconstructed circle path volume image and the reconstructed line path volume image to produce the volume image of the object. An apparatus and computer program product are also described.

    摘要翻译: 一种重建对象的体积图像的方法包括:接收由检测器沿相对于对象的圆形路径收集的圆投影数据; 沿着相对于物体的线性路径接收由检测器收集的线投影数据; 使用包括斜坡滤波器的重构算法从预处理的圆投影数据产生对象的重建圆路径体积图像; 使用包括胡伯特滤波器的重建算法从预处理线投影数据产生所述对象的重构线路体积图像; 并且将重构的圆路径体积图像和重建的线路体积图像组合以产生对象的体积图像。 还描述了一种装置和计算机程序产品。

    X-ray computed tomography apparatus
    4.
    发明授权
    X-ray computed tomography apparatus 有权
    X射线计算机断层摄影装置

    公开(公告)号:US08755585B2

    公开(公告)日:2014-06-17

    申请号:US13107368

    申请日:2011-05-13

    IPC分类号: G06K9/00

    摘要: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, an X-ray detector, and a rotating unit. The first reconstruction processing reconstructs a clinical image based on projection data detected by the X-ray detector. The second reconstruction processing reconstructs a noise image based on noise data. The clinical image is combined with the noise image.

    摘要翻译: 根据一个实施例,X射线计算机断层摄影装置包括X射线管,X射线检测器和旋转单元。 第一重建处理基于由X射线检测器检测到的投影数据重建临床图像。 第二重建处理基于噪声数据重建噪声图像。 临床图像与噪声图像相结合。

    Eyelid detection device and program
    6.
    发明授权
    Eyelid detection device and program 有权
    眼睑检测装置及程序

    公开(公告)号:US08693784B2

    公开(公告)日:2014-04-08

    申请号:US13805597

    申请日:2011-07-06

    摘要: An eyelid detection device that, based on first order differential values and second order differential values of vertical density change at an eyelid boundary in an eye image, shifts the second order differential values upwards by ¼ of the cycle of density change frequency of an eyelid boundary and combines the first order differential values and the second order differential values to compute upper eyelid feature amounts. The eyelid detection device detects a boundary between an upper eyelid and eyeball based on peak points in the vertical direction of the computed upper eyelid feature amounts. Consequently, the boundary between an eyelid and eyeball can be accurately detected even when the eyelid has been applied with makeup.

    摘要翻译: 一种眼睑检测装置,其基于眼图中的眼睑边界处的垂直密度变化的一阶微分值和二阶微分值,将二阶微分值向上移动眼睑边界的密度变化频率周期的1/4 并组合一阶微分值和二阶微分值以计算上眼睑特征量。 眼睑检测装置基于计算的上眼睑特征量的垂直方向上的峰值点来检测上眼睑和眼球之间的边界。 因此,即使当眼睑已经被化妆时,也能够精确地检测眼睑和眼球之间的边界。

    Face feature point detection device and program
    7.
    发明授权
    Face feature point detection device and program 有权
    面部特征点检测装置和程序

    公开(公告)号:US08331630B2

    公开(公告)日:2012-12-11

    申请号:US13259065

    申请日:2010-03-26

    IPC分类号: G06K9/00 G06K9/46

    CPC分类号: G06K9/00281 G06T7/73

    摘要: Detecting with good precision an eye inside corner position and an eye outside corner position as face feature points even when the eye inside corner and/or the eye outside corner portions are obscured by noise. First eyelid profile modeling is performed with a Bezier curve expressed by a fixed control point P3 indicating an eye inside corner first position detected in an image, a fixed control point P4 indicating an eye outside corner first position, a control point P1 corresponding to an upper eyelid position candidate (first parameter), and a control point P2 corresponding to a lower eyelid position candidate (second parameter). Then in a second eyelid profile model with fixed P1 and P2 of the first eyelid profile model having the highest fitting evaluation value λ to the eyelid profile in the image, the values of a control point P3 indicating an eye inside corner position candidate (third parameter) and a control point P4 indicating an eye outside corner candidate (fourth parameter) at a maximum of a fitting evaluation value λ when changing the values of the control point P3 and control point P4 are determined as an eye inside corner second position and an eye outside corner second position, respectively.

    摘要翻译: 即使当角落内部的眼睛和/或眼睛的外角部被噪声遮蔽时,以高精度检测眼内角位置和眼外角位置作为面部特征点。 用固定控制点P3表示的Bezier曲线进行第一次眼皮轮廓建模,所述固定控制点P3表示在图像中检测到的角内第一位置内的眼睛,指示眼睛外角角位置的眼睛的固定控制点P4,对应于上部 眼睑位置候选(第一参数)和对应于下眼睑位置候选的控制点P2(第二参数)。 然后,在具有对图像中的眼睑轮廓具有最高拟合评估值λ的第一眼睑轮廓模型的具有固定的P1和P2的第二眼睑轮廓模型中,指示角内位置候选中的眼睛的控制点P3的值(第三参数 )和将控制点P3和控制点P4的值改变时,以拟合评估值λ的最大值指示眼睛外角候选(第四参数)的控制点P4被确定为眼角内第二位置和眼睛 外角第二位。

    DATA PROCESSING DEVICE
    8.
    发明申请
    DATA PROCESSING DEVICE 审中-公开
    数据处理设备

    公开(公告)号:US20120036310A1

    公开(公告)日:2012-02-09

    申请号:US13197755

    申请日:2011-08-03

    IPC分类号: G06F12/02

    摘要: A data processing device is provided enabling faster read access to data in an on-chip EEPROM with relative ease, without increasing the area occupied by the chip and its power consumption. The on-chip nonvolatile memory included in the data processing device is provided with a pre-read cache which latches all or part of data, once having been read to bit lines from an array of nonvolatile memory cells by selecting a row address, and a selecting circuit which selects a portion of the data latched by the pre-read cache by selecting a portion of columns. Control is performed to retain address information for data latched by the pre-read cache, inhibit latching new data into the pre-read cache for read access to data in the nonvolatile memory according to the same address as the retained address information, and cause the selecting circuit to select the data latched by the pre-read cache.

    摘要翻译: 提供了一种数据处理装置,其能够相对容易地更快地读取片内EEPROM中的数据,而不增加芯片占用的面积及其功耗。 包括在数据处理装置中的片上非易失性存储器设置有预读高速缓冲存储器,其通过选择行地址从锁存非易失性存储器单元的阵列而将数据的全部或部分锁存到位线中,并且 选择电路,其通过选择列的一部分来选择由预读高速缓存器锁存的数据的一部分。 执行控制以保留由预读高速缓存锁存的数据的地址信息,根据与保留的地址信息相同的地址,禁止将新数据锁存到预读高速缓存中以对非易失性存储器中的数据进行读访问,并且使 选择电路以选择由预读高速缓存锁存的数据。

    X-ray CT apparatus and data detecting method of X-ray CT apparatus
    10.
    发明授权
    X-ray CT apparatus and data detecting method of X-ray CT apparatus 失效
    X射线CT装置X射线CT装置及数据检测方法

    公开(公告)号:US07421062B2

    公开(公告)日:2008-09-02

    申请号:US11367324

    申请日:2006-03-06

    IPC分类号: H05G1/58 G01N23/083

    摘要: An X-ray CT apparatus comprises three X-ray generating units, three groups of detecting elements and a reconstructing unit. The three X-ray generating units are arranged so as to make an angle formed by a first X-ray exposure direction and a second X-ray exposure direction on a rotational plane thereof be a same angle as that formed by the second X-ray exposure direction and a third X-ray exposure direction on the rotational plane, the same angle being smaller than 120 degree. The three groups of detecting elements are arranged opposite to the three X-ray generating units respectively so as to make a field of view formed in a center wider than two side fields of view. The reconstructing unit is configured to reconstruct an image using detection data detected by at least desired one of the three groups of the detecting elements.

    摘要翻译: X射线CT装置包括三个X射线产生单元,三组检测元件和重建单元。 三个X射线产生单元被布置成使得其旋转平面上由第一X射线曝光方向和第二X射线曝光方向形成的角度与由第二X射线 曝光方向和旋转平面上的第三X射线曝光方向,相同的角度小于120度。 三组检测元件分别与三个X射线产生单元相对地布置,以便形成在比两个侧视场宽的中心的视场。 重建单元被配置为使用由三组检测元件中的至少期望的一组检测的检测数据来重建图像。