Hi, It's a bit hard to guess... I guess an issue with the geometry might cause such an artefact, e.g. a wrong detector offset in the direction perpendicular to the axis of rotation. Simon
On Fri, Dec 16, 2022 at 2:45 AM 王冬平 <dongping.w...@simmhealthcare.com> wrote: > hi Simon > i reconed one phantom with holes, but i found there is a higher density > area appeared in the center of holes. it can be very sure, it is only a > hole. so could you help to provide some suggestion about what may cause the > artifact of higher density area in the middle of hole? > regards > > Wang Dongping >
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