FIG. 8 shows tomograms obtained based on respective X-ray detect signals detected by radiation examining apparatuses 1 and 40 in the first embodiment, wherein FIG. 8A is an explanatory view showing a first X-ray CT image obtained based on an X-ray detect signal obtained by an X-ray CT examination in an unbreathed state, which has been executed using the radiation examining apparatus 40, and FIG. 8