Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) S Ogawa and T M Lee and A R Kay and D W Tank,Brain magnetic resonance imaging with contrast dependent on blood oxygenation.,Proceedings of the National Academy of Sciences,0027-8424,Proceedings of the National Academy of Sciences,1990-12,87,24,9868-9872,https://cir.nii.ac.jp/crid/1361418521043451904,https://doi.org/10.1073/pnas.87.24.9868