公开(公告)号：US20160189403A1

公开(公告)日：2016-06-30

申请号：US14979259

申请日：2015-12-22

Applicant: GRANDPECT COMPANY LIMITED ,  NUCTECH COMPANY LIMITED

Inventor： Yongshun XIAO ,  Zhiqiang CHEN ,  Ming CHANG ,  Ziran ZHAO

IPC: G06T11/00 ,  G06T7/00 ,  G06T3/60 ,  G01N23/04

CPC classification number: G01N23/046 ,  G01N2223/3306 ,  G06T11/005 ,  G06T2211/421

Abstract: A CT detection method is provided, comprising the steps of: (1) scanning circumferentially an object to be detected by means of X-ray according to a preset angle sampling value, which represents the number of sampling points in one circle, so as to obtain a group of projection sampling data in different projection angles, the preset angle sampling value being greater than 1000; (2) processing the projection sampling data so as to obtain projection data of a plurality of virtual sub-focuses equivalent to a large focus of radiation source in a CT system; and (3) implementing an image reconstruction according to the projection data of the plurality of virtual sub-focuses.

Abstract translation: 提供了一种CT检测方法，包括以下步骤：（1）根据表示一个圆圈中的取样点数量的预设角度采样值，通过X射线沿周向扫描待检测物体，以便 以不同的投影角度获取一组投影采样数据，预设角度采样值大于1000; （2）处理投影采样数据，以获得与CT系统中的大量辐射源相当的多个虚拟子焦点的投影数据; 和（3）根据多个虚拟子焦点的投影数据实现图像重建。

公开(公告)号：US10175182B2

公开(公告)日：2019-01-08

申请号：US14979259

申请日：2015-12-22

Applicant: GRANDPECT COMPANY LIMITED ,  NUCTECH COMPANY LIMITED

Inventor： Yongshun Xiao ,  Zhiqiang Chen ,  Ming Chang ,  Ziran Zhao

IPC: G01N23/00 ,  G01N23/046 ,  G06T11/00

Abstract: A CT detection method is provided, comprising the steps of: (1) scanning circumferentially an object to be detected by means of X-ray according to a preset angle sampling value, which represents the number of sampling points in one circle, so as to obtain a group of projection sampling data in different projection angles, the preset angle sampling value being greater than 1000; (2) processing the projection sampling data so as to obtain projection data of a plurality of virtual sub-focuses equivalent to a large focus of radiation source in a CT system; and (3) implementing an image reconstruction according to the projection data of the plurality of virtual sub-focuses.