An X-ray CT apparatus having X-ray irradiator for irradiating an X-ray to an
object
to be inspected, an X-ray semiconductor sensor for detecting an X-ray passed through
the object to be inspected, an X-ray sensor signal processing circuit for processing
an output signal from the X-ray semiconductor sensor, and a CT control apparatus
for reconstructing an image of the object to be inspected on the basis of the output
signal of the X-ray semiconductor sensor processed by the X-ray sensor signal processing
circuit. The X-ray sensor signal processing circuit includes a filter for removing
a DC component from the output signal of the X-ray semiconductor sensor, and an
integration circuit for integrating an output signal of the X-ray semiconductor
sensor from which the DC component is removed by the filter.
