Ho-ho-ho! Gather ’round, my curious elves, for I have a tale that weaves through the wondrous labyrinth of the human brain, as seen through the magical looking glass known as diffusion MRI (dMRI). Now, imagine if you will, a sleigh that not only glides over the snowy rooftops but also delves deep into the fabric of our very thoughts, revealing the secrets of our inner workings. This sleigh is akin to the advanced relaxation-diffusion MRI (rdMRI), a nifty extension of our trusty dMRI that twinkles with the promise of peering into the brain’s microarchitecture.

Our tale takes a turn into the hallowed halls of neurosurgery, where the elves in white coats are ever so eager to grade brain tumors and monitor how well they respond to their healing spells. Alas, the rdMRI, as splendid as it is, has been like a rare toy on Christmas Eve—scarcely seen in the clinical workshop due to a lack of data. But fear not, for we have a sack full of gifts this year!

We’ve gathered a merry collection of rdMRI data from 18 patients with a jolly variety of brain lesions, and to add a sprinkle of sugarplum fairy dust, we’ve included data from two healthy individuals for good measure. Each brain was imaged with rdMRI using 7 different echo times (TEs), capturing the dance of water molecules at high spatial and angular resolutions.

But what’s a Christmas treat without a bit of quality? Each scan has been checked twice, corrected for any naughty artifacts and distortions, using a process as meticulous as the elves’ toy-making. We’ve made our list and checked it twice, ensuring the dataset is as nice as a warm mug of cocoa on a frosty night.

So, my dear friends, this treasure trove of rdMRI data is now as open as the doors to Santa’s workshop. It’s a gift to all the good boys and girls in neurosurgical research, ready to light up studies like a Christmas tree. May it bring joy, discovery, and perhaps a few miracles to the world of medicine!