Boundary detection in scintigraphic images

Abstract

Automatic boundary detection in image signals obtained from an Anger scintillation camera requires special methods. On the one hand the mapped object is defocussed by the limited resolution of the camera and the radioactive process; on the other hand the true boundaries of the mapped organs for the comparison of different algorithms are not very easily obtainable. Therefore different filtering and boundary detection algorithms have been applied to phantom scintigrams from different objects, i.e., hollow spheres.