Patent ID: 6895080

Claim:
An x-ray measuring apparatus comprising: an x-ray source for emitting x-rays from an x-ray focal spot to a subject; a flat-type x-ray detector in which a plurality of sensing elements each having a sensitive part and a blind part surrounding the sensitive part are arranged two-dimensionally and which detects an x-ray image which has passed through said subject; data processing means for collecting output signals of said sensing elements and performing data process on said x-ray image; and an anti-scatter grid which is disposed between said x-ray focal spot and said flat-type x-ray detector, with predetermined distance from the position of said x-ray focal spot and in which an x-ray transmitting member and an x-ray shielding member are alternately arranged in a first direction, wherein a pitch in said first direction of a linear projection image of said x-ray shielding member projected on a sensing surface of said flat-type x-ray detector by said x-ray is set to be substantially an integral multiple of two or larger of the pitch of arrangement of said sensing elements in said first direction, and a center of said linear projection image of said x-ray shielding member is positioned substantially in a center of an area of said blind part in said first direction.