JPS6472730A - High resolving power x ray tomographic imaging apparatus - Google Patents

Abstract

PURPOSE:To measure a plurality of tomographic images with the optimum resolving power at every size of an object to be examined, by mounting an X-ray detector having function capable of changing position resolving power to the size of the object to be examined. CONSTITUTION:The X-rays emitted from a synchrotron emitting light source 16 pass through a slit 17 to be brought to monochromatic X-rays having an arbitrary wavelength and high parallelization by a spectroscope 18. X-rays (two-dimensional projection image) after transmitted through an object to be examined are detected by an X-ray imaging tube 3 to be taken in a computer 10 through an X-ray imaging tube control apparatus 8 and a sequencer 9 and subsequently passed through a mechanism 7 for supporting and rotating the object to be examined from the computer 10 to rotate the object to be examined at an equal angle interval to again detect the two-dimensional projection image of the object to be examined. This operation is repeated until the angle of rotation of the object to be examined becomes 180 deg. or 360 deg.. From the obtained two-dimensional projection image group, image reconstituting operational processing is performed at every XY plane and a plurality of tomographic images are displayed on an image display apparatus 11. As mentioned above, since two-dimensional projection image measurement can be performed within one exposure time by the X-ray imaging tube, a plurality of tomographic images due to X-rays can be obtained within a short time.