Abstract: An image pickup unit is disposed so as to be able to obtain a scan projection image of an inspection subject from each of a vertical direction and a horizontal direction. An X-ray absorption coefficient of an object in the inspection subject is obtained from the vertical scan projection image and the horizontal scan projection image. It is determined whether there is a threat in the inspection subject on the basis of the X-ray absorption coefficient. Furthermore, a CT image is obtained by moving the image pickup unit around the inspection subject. It is determined whether there is a threat in the inspection subject, on the basis of the CT values of the CT image.

Abstract: An image pickup unit is disposed so as to be able to obtain a scan projection image of an inspection subject from each of a vertical direction and a horizontal direction. An X-ray absorption coefficient of an object in the inspection subject is obtained from the vertical scan projection image and the horizontal scan projection image. It is determined whether there is a threat in the inspection subject on the basis of the X-ray absorption coefficient. Furthermore, a CT image is obtained by moving the image pickup unit around the inspection subject. It is determined whether there is a threat in the inspection subject, on the basis of the CT values of the CT image.

Abstract: A non-destructive inspection apparatus has a radiation source, a radiation detector, a radiation source diver, a detector driver, a drive controller, a delay circuit, a radiation signal processing circuit, a memory, a computer, a display device, and an input device. The radiation detector consists of one-dimensional or two-dimensional array of detectors having a long collimator whose pores are in parallel with the radiation angle of the radiation emitted in an angular pattern from the radiation source, whereby a transmission image of a large size structure can be obtained at high speed and with a high resolution. Furthermore, the detect position in an inspection object can be specified by analyzing a plurality of specified transmission images using the inspection apparatus.

Abstract: A non-destructive inspection apparatus has a radiation source, a radiation detector, a radiation source diver, a detector driver, a drive controller, a delay circuit, a radiation signal processing circuit, a memory, a computer, a display device, and an input device. The radiation detector consists of one-dimensional or two-dimensional array of detectors having a long collimator whose pores are in parallel with the radiation angle of the radiation emitted in an angular pattern from the radiation source, whereby a transmission image of a large size structure can be obtained at high speed and with a high resolution. Furthermore, the detect position in an inspection object can be specified by analyzing a plurality of specified transmission images using the inspection apparatus.

Abstract: A non-destructive inspection apparatus has a radiation source, a radiation detector, a radiation source diver, a detector driver, a drive controller, a delay circuit, a radiation signal processing circuit, a memory, a computer, a display device, and an input device. The radiation detector consists of one-dimensional or two-dimensional array of detectors having a long collimator whose pores are in parallel with the radiation angle of the radiation emitted in an angular pattern from the radiation source, whereby a transmission image of a large size structure can be obtained at high speed and with a high resolution. Furthermore, the detect position in an inspection object can be specified by analyzing a plurality of specified transmission images using the inspection apparatus.