I-MRI (imaging magnontic resonance) iyindlela yokuhlola izitho kanye nezicubu, ezimweni eziningi ezibalulekile ekuqaliseni ukwelashwa okunembile nokuhlonza. Le ndlela yenza kube lula ukuthola isithombe esicacile, esivumela ukudalula izimpawu ezincane kunazo zonke zenqubo ye-pathological.
Ngokuvamile, i-MRI isetshenziselwa ukuxilonga izitho zesistimu ye-central central, isimiso se-musculoskeletal, izitho zangaphakathi, umgogodla. Ukubukeka kubangelwa ukulinganisa kwempendulo yamandla kagesi ama-athomu e-hydrogen ekuphenduleni isenzo sabo ngamagagasi kagesi emkhakheni wegnetic ogxilile kakhulu. Indlela efundisayo yale ndlela yanda ngokusetshenziswa kwama-agent ehlukile.
Ingabe inqubo ye-MRI iyingozi?
Ukucabangela ukuboniswa kwamagnetic kubonakala kungenangqondo enkambweni yomzimba, okuqinisekiswa yizifundo eziningi. Kodwa naphezu kwalokhu, kunokunye okungahambisani nalokho ekufezeni ngakho, ngakho-ke kubalulekile ukwenza i-MRI kuphela ngokusho kwezinkomba zikadokotela bese ucabangela izinyathelo zokuphepha.
Kumele kuqondwe ukuthi ukuphikisana kwe-MRI akuhlobene nemiphumela engaba yingozi yendlela, kodwa izici zesiguli ngasinye kanye nokulinganiselwa okuhlobene nesidingo sokuhlala endaweni evaliwe ngaphansi kwesenzo segnetic. Lokhu kungenxa yethonya lensimu ezintweni zensimbi, ze-elekthronikhi ne-ferromagnetic ezingatholakala emzimbeni womuntu. Umthelela wamagnetic ungabangela ukuphazanyiswa emsebenzini wabo, ukufuduka.
Ukungafani kwe-MRI
Zonke izici, lapho i-imagination magnetic resonance engabi khona khona, ihlukaniswe ngamaqembu amabili: ukuphikisana okuhambisanayo nokuphelele. Ukuphikisana okuhambisanayo yizici lapho inqubo ingabhalwa khona, kodwa ngezimo ezithile. Ukuba khona kokuphikisana okuphelele kungukuvimbela le ndlela yokuxilonga, engakwazi ukukhanselwa phakade noma isikhathi eside.
Ngakho, i-MRI yokuphikisana ngokulinganayo yilezi:
- Ukuhluleka kwenhliziyo ehlukunyeziwe;
- ukukhulelwa (trimester yokuqala);
- i-insulin amaphampu;
- ama-valve yenhliziyo yokufakelwa;
- iziqeshana ze-hemostatic;
- abagqugquzeli besimiso sezinzwa;
- i-claustrophobia (yokuhlolwa emathini amathrekhi);
- imizimba emzimbeni, eyenziwe ngamabalabala anezinsimbi;
- jikelele isimo esibi sesiguli.
Ukuphikisana okungekho emthethweni kwe-MRI kunjengoba:
- ukutholakala kwe-pacemaker;
- ufake amadivayisi ka-Ilizarov;
- izimila ezinkulu zensimbi, izingcezu ze-ferromagnetic;
- ukufakwa kwendlebe ephakathi;
- ama-hepatatic engenawo ama-intracranial ezenziwe ngensimbi.
Lezi zingqinamba ezingenhla zibhekisela kwi-MRI yekhanda (ubuchopho), umgogodla , isisu, izilonda ezincelisayo kanye nanoma yiziphi ezinye izindawo zomzimba. Uma isiguli singenakho ukuphikisana nesifundo, i-MRI ingabuyekezwa izikhathi eziningi.
Ukuqhathaniswa kwe-MRI ngokuphambene
Kwezinye izimo, i-MRI iyadingeka ngokusetshenziswa kokuphambene - izidakamizwa ezikhethekile ezilawulwa ngokuqondile futhi zivumela "ukukhanyisa" izitho zangaphakathi. Njengomthetho, ukulungiswa okuhlukile akubanga imbangela ye-allergen nemiphumela emibi, awunayo umphumela omubi emzimbeni. Ngakho-ke, ukuphikisana kwe-MRI nge-agent ehlukile kuqhathanisa ne-trimestre yokuqala yokukhulelwa (ngalesi sikhathi, i-fetus iyingozi kakhulu), kanye nokubekezelelana ngabanye izingxenye ze-agent ehlukile.