公开(公告)号：US20140146938A9

公开(公告)日：2014-05-29

申请号：US13788682

申请日：2013-03-07

申请人： GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLC

发明人： Akira Hagiwara

IPC分类号： G06T11/00

CPC分类号： G06T11/005 ,  A61B6/032

摘要： An image generating method is provided. The method includes performing a rearrangement process and an interpolation process on fan beam projection data, the fan beam projection data acquired by a scan that includes rotating a radiation source and a detector having a plurality of detecting elements arranged in a channel direction, wherein the interpolation process generates equally-spaced parallel beam projection data in which channel-direction intervals are equal therebetween, and wherein the interpolation process is performed with respect to a plurality of view directions. The method further includes performing a back-projection process on the equally-spaced parallel beam projection data to thereby reconstruct an image, wherein the channel-direction intervals between the equally-spaced parallel beam projection data are smaller than a reference interval obtained by dividing an interval between the detecting elements in the channel direction by a projection enlargement rate.

摘要翻译： 提供了一种图像产生方法。 该方法包括对扇形波束投影数据执行重排处理和内插处理，通过包括使辐射源旋转的扫描获得的扇形波束投影数据和具有沿通道方向布置的多个检测元件的检测器，其中插值 过程产生等间隔的平行光束投影数据，其中信道方向间隔在其间相等，并且其中针对多个视图方向执行插值处理。 该方法还包括对等间隔的平行波束投影数据执行反投影处理，从而重建图像，其中等间隔的平行波束投影数据之间的信道方向间隔小于通过将 在通道方向上的检测元件之间的间隔以投影放大率。

公开(公告)号：US20130343508A1

公开(公告)日：2013-12-26

申请号：US13923105

申请日：2013-06-20

申请人： GE Medical Systems Global Technology Company, LLC

发明人： Akira Hagiwara

IPC分类号： G06T5/00

CPC分类号： G06T5/001 ,  G06T11/006 ,  G06T2211/421

摘要： An image producing method is provided. The method includes acquiring regular-interval parallel-beam projection data whose intervals in a channel direction are the same and parallel to each other in a plurality of view directions by applying interpolation processing in a view direction, rearrangement processing, and interpolation processing in the channel direction to fan-beam projection data, and reconstructing an image by applying back projection processing to the acquired regular-interval parallel-beam projection data, wherein the interpolation processing in the view direction includes interpolation processing which is performed along a curve or a first straight line made by deforming or rotating a second straight line parallel to the view direction so as to be proximate to a trajectory drawn by dots corresponding to a desired position in a Scan Field Of View region on a sinogram of the collected fan-beam projection data in the plurality of views.

摘要翻译： 提供了一种图像产生方法。 该方法包括通过在视频方向上进行插值处理，重新排列处理和频道中的插值处理来获取频道方向上的间隔相同并且在多个视图方向上彼此平行的规则间隔平行波束投影数据 方向到扇形投影数据，以及通过对获取的规则间隔平行光束投影数据应用反投影处理来重建图像，其中在视图方向上的内插处理包括沿着曲线或第一直线执行的内插处理 通过使平行于视线方向的第二直线变形或旋转而形成的线，以便接近于与所收集的扇形束投影数据的正弦图上的扫描视野区域中的期望位置相对应的点绘制的轨迹 多个意见。

公开(公告)号：US09378567B2

公开(公告)日：2016-06-28

申请号：US13788682

申请日：2013-03-07

申请人： GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLC

发明人： Akira Hagiwara

IPC分类号： G06T11/00 ,  A61B6/03

CPC分类号： G06T11/005 ,  A61B6/032

摘要： An image generating method is provided. The method includes performing a rearrangement process and an interpolation process on fan beam projection data, the fan beam projection data acquired by a scan that includes rotating a radiation source and a detector having a plurality of detecting elements arranged in a channel direction, wherein the interpolation process generates equally-spaced parallel beam projection data in which channel-direction intervals are equal therebetween, and wherein the interpolation process is performed with respect to a plurality of view directions. The method further includes performing a back-projection process on the equally-spaced parallel beam projection data to thereby reconstruct an image, wherein the channel-direction intervals between the equally-spaced parallel beam projection data are smaller than a reference interval obtained by dividing an interval between the detecting elements in the channel direction by a projection enlargement rate.

摘要翻译： 提供了一种图像产生方法。 该方法包括对扇形波束投影数据执行重排处理和内插处理，通过包括使辐射源旋转的扫描获得的扇形波束投影数据和具有沿通道方向布置的多个检测元件的检测器，其中插值 过程产生等间隔的平行光束投影数据，其中信道方向间隔在其间相等，并且其中针对多个视图方向执行插值处理。 该方法还包括对等间隔的平行波束投影数据执行反投影处理，从而重建图像，其中等间隔的平行波束投影数据之间的信道方向间隔小于通过将 在通道方向上的检测元件之间的间隔以投影放大率。

公开(公告)号：US09208540B2

公开(公告)日：2015-12-08

申请号：US13923105

申请日：2013-06-20

申请人： GE Medical Systems Global Technology Company, LLC

发明人： Akira Hagiwara

IPC分类号： G06T5/00 ,  G06T11/00

CPC分类号： G06T5/001 ,  G06T11/006 ,  G06T2211/421

摘要： An image producing method is provided. The method includes acquiring regular-interval parallel-beam projection data whose intervals in a channel direction are the same and parallel to each other in a plurality of view directions by applying interpolation processing in a view direction, rearrangement processing, and interpolation processing in the channel direction to fan-beam projection data, and reconstructing an image by applying back projection processing to the acquired regular-interval parallel-beam projection data, wherein the interpolation processing in the view direction includes interpolation processing which is performed along a curve or a first straight line made by deforming or rotating a second straight line parallel to the view direction so as to be proximate to a trajectory drawn by dots corresponding to a desired position in a Scan Field Of View region on a sinogram of the collected fan-beam projection data in the plurality of views.

摘要翻译： 提供了一种图像产生方法。 该方法包括通过在视频方向上进行插值处理，重新排列处理和频道中的插值处理来获取频道方向上的间隔相同并且在多个视图方向上彼此平行的规则间隔平行波束投影数据 方向到扇形投影数据，以及通过对获取的规则间隔平行光束投影数据应用反投影处理来重建图像，其中在视图方向上的内插处理包括沿着曲线或第一直线执行的内插处理 通过使平行于视线方向的第二直线变形或旋转而形成的线，以便接近于与所收集的扇形束投影数据的正弦图上的扫描视野区域中的期望位置相对应的点绘制的轨迹 多个意见。

公开(公告)号：US20130243152A1

公开(公告)日：2013-09-19

申请号：US13788682

申请日：2013-03-07

申请人： GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY, LLC

发明人： Akira Hagiwara

IPC分类号： G06T11/00

CPC分类号： G06T11/005 ,  A61B6/032

摘要： An image generating method is provided. The method includes performing a rearrangement process and an interpolation process on fan beam projection data, the fan beam projection data acquired by a scan that includes rotating a radiation source and a detector having a plurality of detecting elements arranged in a channel direction, wherein the interpolation process generates equally-spaced parallel beam projection data in which channel-direction intervals are equal therebetween, and wherein the interpolation process is performed with respect to a plurality of view directions. The method further includes performing a back-projection process on the equally-spaced parallel beam projection data to thereby reconstruct an image, wherein the channel-direction intervals between the equally-spaced parallel beam projection data are smaller than a reference interval obtained by dividing an interval between the detecting elements in the channel direction by a projection enlargement rate.

摘要翻译： 提供了一种图像产生方法。 该方法包括对扇形波束投影数据执行重排处理和内插处理，通过包括使辐射源旋转的扫描获得的扇形波束投影数据和具有沿通道方向布置的多个检测元件的检测器，其中插值 过程产生等间隔的平行光束投影数据，其中信道方向间隔在其间相等，并且其中针对多个视图方向执行插值处理。 该方法还包括对等间隔的平行波束投影数据执行反投影处理，从而重建图像，其中等间隔的平行波束投影数据之间的信道方向间隔小于通过将 在通道方向上的检测元件之间的间隔以投影放大率。