Patent ID: 6920195

Claim:
A radiographic image forming apparatus comprising: a radiation source for irradiating conical radiation to a test body, the radiation source being in a fixed location; a stimulable phosphor plate, fixedly arranged opposite to the radiation source with the test body sandwiched in-between the stimulable phosphor plate and the radiation source, for recording an intensity of radiation having passed through the test body; a rotatable table for rotating the test body about a body axis with respect to the radiation source; a radiation shield plate having multiple slits orthogonal to the body axis of the test body, and being arranged between the test body and the stimulable phosphor plate; a moving section for moving the radiation shield plate along the body axis of the test body, for each partial rotation of the rotatable table; a controller for controlling radiation from the radiation source, and synchronizes the movement of the rotatable table and the radiation shield plate to form a sinogram of one or more slit images on one plate of the stimulable phosphor plate; a reading section for reading the sinogram; and an image processing section for forming a two-dimensional or a three-dimensional tomographic image by processing the sinogram read by the reading section.