Patent ID: 8085898

Claim:
An X-ray apparatus for measuring a patient's bone density, comprising: a gantry having a base, a first end, and a second end, further comprising: a radiation source configured to direct radiation through said first end, wherein said radiation source comprises a mono-energetic generator producing radiation at a first energy, and a dual energy detector array located in said second end, comprising at least one detector element pair which comprises at least one high energy detector element and at least one low energy detector element that are arranged in a post-collimated stack configuration, wherein the post-collimated stack configuration comprises a metal strip placed underneath the low energy detector element and above the high energy detector element, a first metal piece for post-collimation positioned adjacent to the high energy detector element to reduce scatter radiation from entering into the high energy detector from a first side and a second metal piece for post-collimation positioned adjacent to the high energy detector element to reduce scatter radiation from entering into the high energy detector from a second side, wherein both said first metal piece and second metal piece are positioned in planes parallel to said high energy detector element and substantially perpendicular to said metal strip; an armrest area, further comprising a holding bar, for positioning a patient's forearm in the apparatus wherein said armrest area is positioned between said first end and said second end; and a computing system, further comprising a monitor having a display, wherein said display further comprises a graphical user interface (GUI) for controlling said apparatus.