I-MRI yenhliziyo

Ukuzibona nge-magnontic resonance ingenye yezindlela ezifundisayo zokuxilonga zanamuhla. Le ndlela yenza kube lula ukuthola izithombe zezitho ezahlukahlukene ngesikhathi sokunyakaza kwemvelo nokuphumula. Ngaphezu kwalokho, izithombe ze-MRI zithathwe ku-2-3 izilinganiso ngesinqumo esiphezulu, lokhu kuvumela ukuphenya izici zokusebenza zomzimba.

I-MRI ekuhlinzekeni kwezinhliziyo nokuhlinzwa komzimba kuyindlela ewusizo kakhulu. Ngesizo salo, funda umsebenzi wenhliziyo, ukusebenza kwamagagasi, izinguquko kuzo zonke izingxenye zenhliziyo ngesikhathi sokuphika, ukunyakaza kwegazi emithonjeni emikhulu (umthambo we-pulmonary, aorta). Ngokungangabazeki, izithombe ze-MRI zibalulekile ekutadisheni izinkinga zenhliziyo, nge-infarction ye-myocardial nesifo senhliziyo.

I-MRI isebenza kanjani?

Phakathi nenqubo, isiguli sigxiliwe ngamagagasi kagesi, sibeka ensimini yangaphandle magnetic. Amaseli a-irradiated abamba amandla emisebe ye-electromagnetic. Izinga lokumunca libizwa ngokuthi i-resonance, futhi kungenzeka ukulinganisa. Ngemuva kokuba i-irradiation ime, amangqamuzana anika amandla atholakele, futhi lokhu kulungiswa izinzwa ezikhethekile. Ukuhlaziya izinkomba zamandla abuye abuye alamukele, uhlelo lwekhompiyutha luveza izithombe zezicubu eziveziwe.

Ukuqopha kwe-MRI kwenziwa yizigaba ze-ultrathin, ungqimba ngendlala. Ngakho-ke, udokotela, lapho ehlaziya imiphumela, angabona futhi izinguquko ekujuleni kwenhliziyo yesisindo.

I-MRI yenhliziyo yenziwa kokubili ngokusetshenziswa kwama-agent ehlukile, futhi ngaphandle, kuxhomeke emisebenzini kanye nesimo esithile. Izinto zokungafani zisetshenziselwa ukuxilonga isandulela-infarction, postinfarction, ischemic nezinguquko ukuvuvukala emchocidini.

Ngokuvamile izinto eziphambene nazo yi-gadolinium - i-gadopentetate dimeglumine (i-gadopentetate dimeglumine) yezidakamizwa.

Imiphumela ye-MRI ekwenzeni izinhliziyo yenza kube lula ukunquma amaqhinga okuhlinza emva kokuhlaselwa kwenhliziyo ngokunemba okuphakeme. Ngokuhlaziya izinguquko ezinhlobonhlobo zenhliziyo, kungenzeka ukuthi ukhombise izinguquko eziye zavela ngenxa yokungabi khona kwegazi (ischemia) edongeni lezingxenyeni. I-Ischemia ivusa ukuchotshozeka okungavamile. I-MRI ivumela ukutadisha okuningiliziwe kokulingana kwalezi zinguquko kanye nombuzo wokuthi ukuhlinzeka nge-aorto-coronary bypass kudingekile . Uma inani elinyuka le-gadolinium liqoqa ezindaweni ze-myocardium, lokhu kubonisa ushintsho lwe-necrotic elingenakuguquka emaqenjini enhliziyo. Ukuhlinzwa kwe-CABG kungabuyisa ukugeleza kwegazi, ngokudlula izindawo ezivinjiwe zokugeleza kwegazi. Kodwa uma kusungulwa i-necrosis yezicubu, ukungenelela okuhlinzayo ngeke kuhlinzeke umphumela oyifunayo, ukukhiqiza umthwalo ongadingekile emzimbeni. Nokho, uma i-necrosis ingekho, i-CABG izosindisa inhliziyo yesiguli. Ngenxa yalesi sizathu, i-MRI yenhliziyo idlala indima ebalulekile ekunqumeni kwemisebenzi yezinhliziyo.

Uma siqhathanisa i-MRI ne-echocardiography noma i-positron emission tomography, khona-ke singakwazi ukukhuluma ngecala elilandelayo eliqinile le-imaging magnontic resonance: ukuqoqwa kwe-gadolinium kwenza kube lula ukukhomba ngokunembile kakhulu izingxenye ze-myocardium engabonakali futhi ebonakalayo ephakathi kwodonga lwezincubu zomzimba ze-muscle.

I-MRI yenhliziyo: inqubo

Endaweni yesenzo se-MRI, isiguli sigxilile, ngoba ukunyakaza kunciphisa ikhwalithi yesithombe. Ubude benkambiso bungathatha emaminithini ama-30 ukuya kumaminithi angu-90. Ihhovisi lapho isheke liqhutshwa khona lihle futhi liphuze umoya. Ngesikhathi sokuhlola, abasebenzi bezokwelapha kudingeka banikeze isiguli esinezifo.

Ukungafani kwe-MRI kungase kube i-pacemaker efakwe, izimpande zensimbi nezinye izinto ezifanayo.

Kungenjalo, ngoba i-MRI yenhliziyo ayidingi ukuqeqeshwa okukhethekile.