Verfahren zur Verbesserung des Signal-/Rauschverhältnisses im Röntgenbild eines bewegten Objektes

摘要

The system uses summation of samples to improve signal to noise ratio. The radiographic procedure for an object enables examination whilst the object is moving. The object moves between a source (4) and a detector (6), following a procedure which includes the determination of an object projection plane. This is such that, for one of the positions of the moving object, the plane is a single line. A series of radiographic images are taken during the movement of the object, and the contributions from successive images are summed using a formula incorporating the thickness of the objects, the source-detector distance, and the number of successive positions of the object for which images are taken.