Abstract: An X-ray CT apparatus includes a unit for transmitting an X-ray at not less than two different heights of a measurement object and obtaining a given CT image. Alternatively, the X-ray CT apparatus includes a unit for causing an X-ray to pass through the measurement object and obtaining a CT image and a unit for positioning the X-ray source at not less than two different heights of the measurement object, emitting the X-ray, and obtaining the given CT image. Alternatively, the X-ray CT apparatus includes a unit for causing an X-ray to pass through the measurement object and obtaining a CT image and a unit for obtaining CT image data at a third height position between a first and a second height positions based on CT image data of the first and second height positions of the measurement object.

Abstract: An X-ray CT apparatus includes a unit for transmitting an X-ray at not less than two different heights of a measurement object and obtaining a given CT image. Alternatively, the X-ray CT apparatus includes a unit for causing an X-ray to pass through the measurement object and obtaining a CT image and a unit for positioning the X-ray source at not less than two different heights of the measurement object, emitting the X-ray, and obtaining the given CT image. Alternatively, the X-ray CT apparatus includes a unit for causing an X-ray to pass through the measurement object and obtaining a CT image and a unit for obtaining CT image data at a third height position between a first and a second height positions based on CT image data of the first and second height positions of the measurement object.

Abstract: A novel optical molding process for forming a three-dimensional article from a photosensitive resin which is liquid at normal temperatures which involves forming a plurality of laminated cured resin layers by a repetition of the step of forming a cured resin layer by selectively irradiating the surface of a photosensitive resin, wherein the photosensitive resin has been coagulated by cooling and the coagulated resin is irradiated to cure it. The process can produce a three-dimensional article having an overhanging part without producing warping in the finished product and without requiring a support for the overhanging part while this part is being optically molded.