公开(公告)号：EP3108813A1

公开(公告)日：2016-12-28

申请号：EP16172349.9

申请日：2016-06-01

申请人： Konica Minolta, Inc.

发明人： MAKIFUCHI, Chiho

IPC分类号： A61B6/00

CPC分类号： G06T7/0002 ,  A61B6/4291 ,  A61B6/484 ,  A61B6/505 ,  A61B6/5205 ,  A61B6/5211 ,  A61B6/5264 ,  G06T11/005 ,  G06T2207/10116 ,  G06T2207/30008 ,  G06T2207/30168

摘要： A radiation imaging system includes a radiation imaging device, a reconstruction unit and a detection unit. The reconstruction unit generates at least two of a differential phase image, an absorption image and a small-angle scattering image based on periodic pattern images of a subject obtained by the imaging device. The detection unit performs regression analysis on at least two images of (a) the differential phase image, a differential absorption image of the absorption image and a differential small-angle scattering image of the small-angle scattering image or (b) a phase image of the differential phase image, the absorption image and the small-angle scattering image; calculates a value of an indicator indicating a relationship between the at least two images; and detects image quality deterioration due to change in relative position of the imaging device and the subject based on the value.

摘要翻译： 辐射成像系统包括放射线成像装置，重建单元和检测单元。 重建单元基于由成像装置获得的对象的周期性图案图像，生成差分相位图像，吸收图像和小角度散射图像中的至少两个。 检测单元对（a）差分相位图像，吸收图像的差分吸收图像和小角度散射图像的差分小角度散射图像的至少两个图像执行回归分析，或者（b）相位图像 的差分相位图像，吸收图像和小角度散射图像; 计算指示所述至少两个图像之间的关系的指示符的值; 并且基于该值检测由于成像装置和被摄体的相对位置的变化而导致的图像质量恶化。

公开(公告)号：EP3449832A1

公开(公告)日：2019-03-06

申请号：EP18201488.6

申请日：2016-06-01

申请人： Konica Minolta, Inc.

发明人： MAKIFUCHI, Chiho

IPC分类号： A61B6/00

摘要： A radiation imaging system includes a radiation imaging device, a reconstruction unit and a detection unit. The radiation imaging device includes a first mechanism that carries a subject in an orthogonal direction which is at right angles to the emission axis direction or a second mechanism that moves the radiation imaging device in the orthogonal direction. The radiation imaging device is capable of obtaining a plurality of periodic pattern images while carrying the subject with the first mechanism or moving the radiation imaging device with the second mechanism. The reconstruction unit generates reconstructed images of a differential phase image, an absorption image and a small-angle scattering image based on periodic pattern images of a subject obtained by the imaging device. The detection unit performs regression analysis on at least two images of (a) the differential phase image, a differential absorption image of the absorption image and a differential small-angle scattering image of the small-angle scattering image or (b) a phase image of the differential phase image, the absorption image and the small-angle scattering image; calculates a value of an indicator indicating a relationship between the at least two images; and detects image quality deterioration due to change in relative position of the imaging device and the subject based on the value.

公开(公告)号：EP3108813B1

公开(公告)日：2018-12-12

申请号：EP16172349.9

申请日：2016-06-01

申请人： Konica Minolta, Inc.

发明人： MAKIFUCHI, Chiho

IPC分类号： A61B6/00

CPC分类号： G06T7/0002 ,  A61B6/4291 ,  A61B6/484 ,  A61B6/505 ,  A61B6/5205 ,  A61B6/5211 ,  A61B6/5264 ,  G06T11/005 ,  G06T2207/10116 ,  G06T2207/30008 ,  G06T2207/30168

摘要： A radiation imaging system includes a radiation imaging device, a reconstruction unit and a detection unit. The reconstruction unit generates at least two of a differential phase image, an absorption image and a small-angle scattering image based on periodic pattern images of a subject obtained by the imaging device. The detection unit performs regression analysis on at least two images of (a) the differential phase image, a differential absorption image of the absorption image and a differential small-angle scattering image of the small-angle scattering image or (b) a phase image of the differential phase image, the absorption image and the small-angle scattering image; calculates a value of an indicator indicating a relationship between the at least two images; and detects image quality deterioration due to change in relative position of the imaging device and the subject based on the value.