Patent ID: 6400792
Filing Date: 2002-06-04
Classification: G01F,G01N

Abstract:
A method for measuring the velocity of a moving object by a high-speed X-ray CT, said method comprising the steps of,simultaneously measuring the internal information at two sections in the moving object using a detector module in which a large number of slender devices formed of a compact semiconductor for detecting the X-rays are arranged alternately in a projecting manner in the direction opposite to each other so that a part of the devices on end part sides are adjacent to each other, aligning two slits with sparsely arranged portion of the devices, respectively, on both end sides of the detector module where said devices are arranged in every other interval, and detecting the X-rays irradiated from an X-ray source and passed through said two slits by said devices; simultaneously measuring the internal information at said two sections in the moving object by similarly detecting the X-ray through said two slits after a very short time interval; and comparing the internal information of the moving object measured through said two slits at different times with each other, and obtaining the velocity of the moving object based on the time interval when the internal information is closely similar to each other and the interval between said slits.