Uniform spacing for prediction task

In case of prediction and feature extraction,
is it necessary to have uniform spacing for ct images by doing resampling?

@lassoan I would appreciate if you share your opinions with me.

Best regard

Yes, generally for any 3D processing or analysis you can avoid some problems if you resample the image to have isotropic resolution. Resampling is a lossy operation, so try to keep the current resolution along axes (e.g, if you have a 0.8x0.8x3mm spacing then resample to 0.8x0.8x0.8 instead of 1.0x1.0x1.0).

1 Like

Thank you. How about filtering such as wavelet or LoG?

Noise filtering or other arbitrary enhancement or feature extraction filters are probably unnecessary and may even lead to worse end results.

1 Like