| 摘要 |
PURPOSE:To easily judge whether or not there is an internal defect in a body by multiplying a detected value of each data sampling position of an X-ray quantity detecting means by a corresponding attenuation constant. CONSTITUTION:Data at each sampling position of an X-ray image which is transmitted through a material 3 to be inspected is converted by an A/D converter 7a into a digital value, which is stored in a memory 7b temporarily and outputted to a multiplier 11b. Then the command signal from the control part of an image processor is outputted to a 1/alpha setter 11a to assign the address corresponding to the sampling position of the data outputted from the memory 7b. Consequently, the 1/alpha setter 11a outputs the data (1/alpha) stored in the address. The multiplier 11b multiplies the output data of the memory 7b by the output data of the 1/alpha setter 11a and outputs the value to a memory 11c. Consequently, even when the material to be inspected has ununiform thickness in an X-ray irradiation direction, the brightness of a visible image is uniformed and light and shade due to the defect are easily discriminated. |
