X-RAY IMAGING APPARATUS AND METHOD FOR ESTIMATING DEGREE OF WEAR OF X-RAY SOURCE

摘要

To provide an x-ray imaging apparatus and a method for estimating the degree of wear of an x-ray source which can estimate the degree of wear of an x-ray source without measuring a grid voltage.SOLUTION: An x-ray control unit includes a tube current value setting unit that sets a tube current value to be supplied to an x-ray source, a tube current value measurement unit that measures a cathode current value as a tube current value by a cathode current detector 15, a time measurement unit that measures a time when a tube current value is set by the tube current value setting unit and a time when a tube current value measured by the tube current value measurement unit reaches a set value, and a wear level estimating unit that estimates the wear level of a cathode 12 in the x-ray source on the basis of a time until a tube current value becomes the set value after the tube current value has been set.SELECTED DRAWING: Figure 2