  For the lossless compression of dynamic 3-D+t volumes as produced by medical
devices like Computed Tomography, various coding schemes can be applied. This
paper shows that 3-D subband coding outperforms lossless HEVC coding and
additionally provides a scalable representation, which is often required in
telemedicine applications. However, the resulting lowpass subband, which shall
be used as a downscaled representative of the whole original sequence, contains
a lot of ghosting artifacts. This can be alleviated by incorporating motion
compensation methods into the subband coder. This results in a high quality
lowpass subband but also leads to a lower compression ratio. In order to cope
with this, we introduce a new approach for improving the compression efficiency
of compensated 3-D wavelet lifting by performing denoising in the update step.
We are able to reduce the file size of the lowpass subband by up to 1.64\%,
while the lowpass subband is still applicable for being used as a downscaled
representative of the whole original sequence.
