Patent ID: 7809110
Filing Date: 2010-10-05
Classification: A61B,G01T

Abstract:
1. An X-ray imaging device including a means for generating X-rays, a limiting collimator that limits an X-irradiation range, and an X-ray detection means for detecting an image of X-rays transmitted by a subject, the X-ray imaging device comprising: a plurality of pieces of reference signal detection means located at the ends of the X-ray detection means and provided with anti-scattering collimators that intercept X-rays transmitted by the subject and scattered from the subject and that lie on faces of the reference signal detection means side of an X-ray incident direction, the reference signal detection means detecting electromagnetic-wave noise generated externally as external noise; a reference signal memory means in which the external noise detected by the respective pieces of reference signal detection means is stored as reference signals; a frame memory means in which projection signal data detected by the X-ray detection means with X-irradiation from the X-ray generation means to the X-ray detection means limited by the limiting collimator is stored; and a calculation means that calculates a noise removal signal using the stored projection signal data and reference signals.