Kalmar "mRI mai ƙarfi" tana nufin wani nau'in fasaha na maganadisu na maganadisu (fMRI) wanda ke auna canje-canje a matakan oxygenation na jini a cikin kwakwalwa. BOLD gagara ce ga "dogaran matakin oxygen na jini," kuma siginar da aka auna a cikin irin wannan fMRI. Ana amfani da siginar BOLD azaman wakili don ayyukan jijiyoyi a cikin kwakwalwa, kamar yadda aka yi imani cewa canje-canje a cikin ayyukan jijiyoyi suna haɗe da canje-canje a cikin jini da oxygenation. BOLD fMRI ana amfani da shi sosai a cikin binciken ilimin kimiyyar ƙwaƙwalwa don bincika alaƙar jijiya na matakai da ɗabi'u daban-daban.