Hello,

The "d" prefix stands for "denoised". Therefore, "dswau" would be denoised (d), smoothed (s), normalized (w), slice timing corrected (a), and motion corrected+unwarped (u) images. [Reference: https://www.nitrc.org/forum/message.php?msg_id=28801]

The reason for increased file size could simply be the resolution you have selected during normalization (the typical resolution selected during normalization is 2mm isotropic).



Best
Pravesh