I have a question about this dataset that was made the last year, so my question is the next: When I was analyzing the dataset to work in a homework about my university, I saw a difference betwen some of this folders, for example the patient 8 had 2 folders 000 and 001, so what it is? I hope this dataset is preoperative, to train a model y have to pic alll data because this two folders can be two different patients? I hope to make myself understood. greetings!