Brain Tumor Database for CNN? I'm trying to build a Convolutional Neural Network model to classify and predict a brain tumor based on images. I am looking for a database containing images of brain tumor. 

Can someone introduce some medical databases (small one to test or big ones) with links to download?
Some of the followings might be useful:


Brain Tumor Image Segmentation Challenge
Primary Tumor Data Set by UC Irvine Machine Learning Repository 
ncbi.nlm.nih.gov
University of Cyprus
Brain Tumor Dataset