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Fix #452

@axel-grc axel-grc requested a review from SimonRit December 19, 2025 09:48
@axel-grc axel-grc changed the title ENH: Check attenuation map in Joseph back and forward projection filters ENH: Require attenuation map for JosephAttenuated projection methods Dec 19, 2025
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Thanks. There should be an error message at the application level as you suggest. But there should also be an exception raised in JosephBackAttenuatedProjectionImageFilter as you had initially suggested.

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Attenuated forward and backprojectors should display an error message when the attenuation map is not set

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