公开(公告)号：US07480363B2

公开(公告)日：2009-01-20

申请号：US11108498

申请日：2005-04-18

申请人： Brian W. Lasiuk ,  Thomas J. Batzinger ,  Manoharan Venugopal ,  Elizabeth L. Dixon ,  Michael R. Hopple ,  Nityanand Gopalika ,  Sivaramanivas Ramaswamy ,  Debasish Mishra ,  Rajashekar Venkatachalam ,  Vamishi Krishna Reddy Kommareddy

发明人： Brian W. Lasiuk ,  Thomas J. Batzinger ,  Manoharan Venugopal ,  Elizabeth L. Dixon ,  Michael R. Hopple ,  Nityanand Gopalika ,  Sivaramanivas Ramaswamy ,  Debasish Mishra ,  Rajashekar Venkatachalam ,  Vamishi Krishna Reddy Kommareddy

IPC分类号： G01B15/02

CPC分类号： G01B15/025

摘要： A digital radiography imaging system for acquiring digital images of an object, and a method for transforming digital images into an absolute thickness map characterizing the object under inspection. The system includes a radiation source for directing radiation through a desired region of the object, and a radiation detector having a plurality of sensing elements for detecting radiation passing through the object. Numerical data generated from each sensing element is calibrated, for example by correcting for variations in radiation paths between the source and detector, by correcting for variations in the spatial frequency response (MTF) of the detector, by correcting for variations in the geometric profile of the object under inspection, and by correcting for material contained in and/or around the object. The calibrated data is processed in order to generate and display an absolute thickness map of the object. The calibration procedures are adapted for extracting a thickness map from both isotope sources and X-ray tube sources.

摘要翻译： 一种用于获取对象的数字图像的数字放射线照相成像系统，以及将数字图像转换为表征检查对象的绝对厚度图的方法。 该系统包括用于引导辐射通过物体的期望区域的辐射源，以及具有用于检测通过物体的辐射的多个感测元件的辐射检测器。 通过校正检测器的空间频率响应（MTF）的变化，通过校正各个感测元件的几何轮廓的变化来校正每个感测元件产生的数值数据，例如通过校正源和检测器之间的辐射路径的变化 被检查物体，以及通过校正物体中和/或周围的物质。 对校准后的数据进行处理，以生成和显示对象的绝对厚度图。 校准程序适用于从同位素源和X射线管源提取厚度图。

公开(公告)号：US06925145B2

公开(公告)日：2005-08-02

申请号：US10646279

申请日：2003-08-22

申请人： Thomas J. Batzinger ,  Brian W. Lasiuk ,  Peter Allison ,  Gregory A. Mohr ,  August D. Matula

发明人： Thomas J. Batzinger ,  Brian W. Lasiuk ,  Peter Allison ,  Gregory A. Mohr ,  August D. Matula

IPC分类号： G01N23/04 ,  G01N23/18 ,  G01B15/06

CPC分类号： G01N23/04 ,  G01N23/18

摘要： A system and method for high-speed radiographic inspection of fluid transport vessels in which a radiation source and a radiation detector are positioned on opposite sides of the outside surface of the vessel. A positioning system is provided for moving and locating the radiation source and radiation detector longitudinally with respect to the vessel and for moving the radiation source and radiation detector circumferentially with respect to the vessel. In operation, the positioning system causes the radiation source and radiation detector to spiral along the vessel in a coordinated manner while the radiation source illuminates an adjacent region of the vessel with radiation. The radiation is converted into corresponding electrical signals used to generate images of objects in the radiation path. Finally, an operator inspects the images for defects.

摘要翻译： 一种用于流体输送容器的高速放射线检查的系统和方法，其中辐射源和辐射检测器位于容器的外表面的相对侧上。 提供了一种定位系统，用于相对于容器纵向移动和定位辐射源和辐射探测器，并使辐射源和辐射探测器相对于容器周向移动。 在操作中，定位系统使得辐射源和辐射检测器以协调的方式沿着容器螺旋，同时辐射源用辐射照射容器的相邻区域。 辐射被转换为用于在辐射路径中产生物体的图像的相应的电信号。 最后，操作员检查图像的缺陷。