method for precise determination of geometrical sizes of investigated object at radiological research

摘要

A method for precise determination of geometrical sizes of investigated object at radiological research comprises the roentgenoscopy and rontgenography of measured object of research, measurement of tobject size on a wall, determination of a distance from radiation center of x-ray tube in the cartridge, measurement of a distance from the cartridge to object of research and determination of size of object of research, measurement of distance from focal axis of x-ray tube to external wall of the cartridge and from internal side of the cartridge to film. The thicknesses of photoemulsion layer and basis in film thickness are measured and determined. An actual size of object of research is calculated.