Patent ID: 6980626

Claim:
A method for operating an x-ray arrangement to compensate for scattered radiation, said x-ray arrangement comprising a first x-ray system having a first x-ray source and a first x-ray detector and a second x-ray system having a second x-ray source and a second x-ray detector, said method comprising the steps of: with said first and second x-ray systems in a specified position relative to each other, irradiating a subject with x-rays from said first x-ray source, thereby producing scattered radiation, and detecting said scattered radiation with the second x-ray detector with said second x-ray source being unactivated, thereby obtaining a scattered radiation image from said second x-ray detector; saving said scattered radiation image; operating both of said first and second x-ray systems to obtain diagnostic x-ray images of said subject and subtracting said scattered radiation image from the diagnostic images obtained from said second x-ray system; and obtaining said scattered radiation image using a first x-ray dose from said first x-ray source and obtaining said diagnostic images using a second x-ray dose from said second x-ray source, different from said first x-ray dose, and scaling said scattered radiation image, prior to subtraction from said diagnostic images obtained from said second x-ray source, dependent on a relationship between said first x-ray dose and said second x-ray dose.