Patent ID: 7885381
Filing Date: 2011-02-08
Classification: G01B,G01N

Abstract:
1. An X-ray radiation non-destructive inspection system, comprising: an X-ray radiation source and a two-dimensional X-ray radiation detector for moving on a guide rail which is arranged along a longer direction of a pipe which is installed in a plant which is a subject of inspection, and arranged opposedly to each other across the pipe; a C-shaped arm fixing said X-ray radiation source and said two-dimensional X-ray radiation detector for scanning said X-ray radiation source and said two-dimensional X-ray radiation detector along the pipe side by side; and a control and arithmetic apparatus for acquiring transmission image data from said two-dimensional X-ray radiation detector for every fixed distance which moves on said C-shaped arm, in which the transmission image data include data at a projection part of a first subject of inspection and a projection part of a second subject of inspection which is located at a different depth from the first subject of inspection; wherein said control and arithmetic apparatus comprises: an image acquisition device for acquiring the transmission image data output from said two-dimensional X-ray radiation detector; a control device for controlling a position of said C-shaped arm; a transmission image storage device for saving a transmission image acquired in said image acquisition device; a judging device which, in accordance with the transmission image from said transmission image storage device, discriminates a region of the pipe that requires image reconstruction for a tomogram or a stereoscopic image; and an image reconstruction arithmetic device that reconstructs a three-dimensional stereoscopic image by reconstructing a part of the first subject of inspection from a plurality of the transmission image data based on information of the projection part of the first subject of inspection which is a part of the pipe discriminated by said judging device, and by reconstructing a part of the second subject of inspection from a plurality of the transmission image data based on information of the projection part of the second subject of inspection.