Extracting breathing traces from any cone-beam image-set

Abstract

A new technique is presented for obtaining breathing traces from any sequential planar X-ray image-set, such as that acquired during a cone-beam CT scan (CBCT). The technique is based on extracting a signal from the fast variations in summations of pixels values. The method has been tested against existing methods using patient data and verified using a breathing phantom. The advantage of this technique over existing methods is that it can be completed for any field of view. © 2009 Springer-Verlag.