Error: No image data in input volume #0

Hello,

I have CT images of the plastic water phantom loaded for orthovoltage dose calculation. The same images were used by my colleagues last year. Surprisingly, I get this error Error: No image data in input volume #0 when I try to calculate the dose similar to what my colleagues did.

Anyone aware of what might be the reason for this error.

Thank you,

Tom

Based on the error message the selected reference image is invalid. Make sure you select it and that it is the right one.