I have 2 questions regarding the brain MRI data from the dataset:
I see that except for T1 and T1POST (which are both described in the paper)
there is also T1PRE, what does that mean? Is it the same as T1?
As I understand from the paper, for some patients there were taken multiple modalities,
so that for instance there is patient X with T1 and T2 modalities. I see that for each modality
there is a separate H5 file. The question is how I can understand what modalities are of the same patient? Since the filenames are totally different as well as the patient_id that is in attributes.