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== ERROR: DataSymmetriesForBins_PET_CartesianGrid can currently only support z-grid spacing equal to the ring of the scanner divided by an integer. Sorry == You can see this error when using forward projection of an image (e.g. when computing attenuation correction factors), or backprojection to an image. It happens because the projectors try to save memory (and time) by using a symmetry in the axial direction. To avoid this error, you have to use a z-spacing for the image which is half the ring-spacing of the scanner. (Although the symmetries could be used in other cases as well, there seem to be some problems with the projectors in such cases in the current version of STIR).
Summary:
Please note that all contributions to STIR may be edited, altered, or removed by other contributors. If you do not want your writing to be edited mercilessly, then do not submit it here.
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