Ts'ebetsong ea scan ea MRI, ts'ebetso ea `` coil gradient '' ke ho fumana kh'outu ea sebaka. Ha o skena setšoantšo, li-coil tsa X, Y, le Z tse tharo li sebetsa 'moho ho etsa likhetsi, likhetho tsa kh'outu le kh'outo ea mekhahlelo ka tatellano. Ha hona joale ho fetisoa ka li-coil tsena ho hlahisoa matla a khoheli a bobeli. Tšimo ena ea gradient e sotha matla a khoheli ka mokhoa o ka tsejoang esale pele, e etsa hore maqhubu a li-resonance a fetohe joaloka ts'ebetso ea boemo. Mosebetsi oa mantlha oa li-gradients, ka hona, ke ho lumella kh'outu ea sebaka sa lets'oao la MR. Likhoele tsa gradient le tsona li bohlokoa bakeng sa mekhoa e fapaneng ea "physiologic", joalo ka MR angiography, diffusion le imaging perfusion.

Ka nako e ts'oanang, li-coil tsa gradient le tsona li ikarabella bakeng sa ts'ebetso ea hona joale ea shimming le anti-eddy

Khamphani ea rona e fana ka li-coil gradient gradient ka ts'ebetso e ntle, e ka fihlelang litlhoko tsa ts'ebeliso.

Ho ea ka pono ea sebopeho, sethala sena se sephara se na le X, Y, Z, li-coil tsa tsela tse tharo, se bonolo ho hokela, 'me se ka ba le sistimi ea ho futhumatsa metsi, e ka phodisang kela ea gradient le ho etsa litšoantšo. ho tsitsa haholoanyane;

E ka boela ea etsoa e le kela e sirelelitsoeng ka mafolofolo e le ho fokotsa matla a morao-rao ho tsoa mohloling. Hobane mokhoa o sebetsang ka ho fetesisa oa ho laola maqhubu a eddy ke ho thibela tlhahiso ea maqhubu a eddy pele. Ena ke tšusumetso ea ho nts'etsapele mekhabiso e sirelletsang ea ho itšireletsa; hajoale e khoeling e sirelletsang e sebelisoa ho matha ka lehlakoreng le leng ho ea ho coil gradient coil ho fokotsa maqhubu a eddy. Kela ea gradient e entsoeng ka tsela ena ea ts'epahala ebile ea tšoarella.