Oko kukuthi, indlela esetyenziswa ngayo
Ukukhishwa kwe-MUGA (ukufundwa kwe-Gtiple Gated Acquisition scan) kuyilingo elingenakuvakalayo elisetyenziselwa ukuhlola umsebenzi wentliziyo. Iskrini se-MUGA senza umfanekiso ohambelayo wentliziyo yokubetha, kwaye ukusuka kule mfa nekiso impawu ebalulekileyo inokumiselwa ngempilo yee-ventricle ezisekhohlo kunye namanqanaba amancinci (iintliziyo ezinkulu zamagumbi okupompa). I-scan ye-MUGA ibaluleke kakhulu ekunikeni ukufundwa kwekhono lokupompa jikelele lentliziyo.
I-MUGA Iskena Yenzani?
Ukuba unesisindo se-MUGA, inani elincinane le-Technetium 99 (inkunkuma ye-radioactive) ifakwe kwigazi lakho. I-Technetium 99 ifakela kwiiseli zakho ezibomvu zegazi, kwaye ijikeleza ngaphakathi kwegazi lakho. Emva koko uza kufakwa phantsi kwekhamera ekhethekileyo (ikhamera yegama), ekwazi ukubona i-radiation level-level ekhutshwa yii-cell elinebomvu ebizwa nge-Technetium. Ngenxa yokuba amangqombela egazi abomvu agcwalisa amagumbi omzimba, ikhamera yegma iyakwazi ukuvelisa into ebonakalayo ibhayisikobho yentliziyo yokubetha. Le "movie" yedijithali ingahlaziywa ngeendlela ezahlukeneyo zeekhompyutheni, ezinokumisela ulwazi oluncedo malunga nempilo yakho yonke.
Yintoni enokuyifunda kwi-MUGA Scan?
Iinkalo ezibalulekileyo zomsebenzi wenhliziyo zingalinganiswa kwi-scan ye-MUGA. Ukuba umntu unesifo senhliziyo i-scan ye-MUGA inokuxelela ukuba yeyiphi inxalenye yesisu senhliziyo esisebenza ngokungavumelekanga.
Ngokufumana indawo yokulimala kwemisipha yenhliziyo, i-scan ye-MUGA inika ugqirha obalulekileyo malunga nokuba iimpawu ze- coronary zivaliwe okanye zihluthwe ngokuthe ngcembe nge- atherosclerosis .
I-scan ye-MUGA nayo intle kakhulu ekulingeni umsebenzi wonke wentliziyo. Oku kubaluleke kakhulu ukuba kukho nayiphi na idideydididiyopathy .
Iskripthi se-MUGA sinika iindlela ezichanekileyo nezizalisekayo zokulinganisa kunye nokubeka iliso "iqhekeza le-ejection" yeengqungquthela zomzimba. Ingqungquthela ye-ejection ye-ejection (LVEF) iyona mlinganiselo ophezulu wento yonke yomzimba, kwaye incedo kakhulu ekuncedeni oogqirha ukuvavanya nokuphatha abantu abanesifo senhliziyo .
Xa i-MUGA ichitha ngakumbi ngakumbi kunezinye iimvavanyo zeentliziyo?
Kukho izibonelelo ezimbini eziqhelekileyo ze-MUGA ukuskena kwezinye iindlela (ezifana ne- echocardiogram ) yokuvavanya ukusebenza komzimba.
Okokuqala, i-LVEF efunyenwe nge-MUGA iskripthi ichanileyo kwaye ibonwa njengoluchanekileyo kunemilinganiselo ye-LVEF efunyenwe ngezinye iintlobo zeemvavanyo zengqondo.
Okwesibini, i-LVEF ilinganiswa ngeqhekeza le-MUGA yokukhangela i-ejection iqhele kakhulu. Oku kuthetha ukuba emva koko i-MUGA ihlola umlinganiselo kwi-LVEF, loo mmahluko unokubonakalisa utshintsho olwenziwe kwimeko yentliziyo (kwaye akuyiyo into eyenziwa ngokulinganayo). Ngezinye iimvavanyo, ukuhlukahluka kwimiqathango yeLVEF ephindaphindiweyo kuya kuba nzima.
Ezi zinto zimbini zenza ukuba i-MUGA isetshenziswe ngokukhethekileyo ukufumana utshintsho olusentshonkqweni kwintliziyo yomntu ngokuhamba kwesikhathi.
Umzekelo oqhelekileyo xa uvavanyo lweMUGA oluphindaphindiweyo luncedo luya kuba kuhloliseni umsebenzi womntu wenyama ngexesha le- chemotherapy yomhlaza.
Ezinye i-chemotherapeutic agents (i- Adriamycin yinto ephawulekayo) ingaba yicyhefu kwisifo senhliziyo.
I-scan ye-MUGA ichanekile kwaye ivelise ngokwaneleyo ukufumana ukucima, ukutshintsha kwangaphambili kwintliziyo yesimo esingahle ilahleke ngenye indlela. Ngokulinganisa i-LVEF kunye neengxelo ze-MUGA zexesha, i-oncologists iyakwazi ukuba ikhuselekile ukuba iqhubeke ne-chemotherapy, okanye ingaba imithi ethile kufuneka imisiwe.
Imida ye-MUGA Scan
Njengoko naluphi na uvavanyo lokuxilonga olusetyenziswa kumayeza, kukho ezinye iingxaki ezingena kwi-MUGA.
Ngenxa yokuba iskrini se-MUGA sidinga ukusebenzisa imveliso yomsakazo, umntu onokwenza oku kukhangela ubonakaliswe kwisixa esincinci se-radiation.
Isixa semisebe enxulumene ne-scan ye-MUGA sinoku malunga ne-6.2 mSv, ephindwe kabini imisebe eqhelekileyo yemvelaphi yomntu owathobela kunyaka owodwa, kunye namaxesha angama-10 amayeza atholakala kunye ne- mammogram .
Ukongezelela, ukuchaneka kwe-LVEF efunyenwe nge-MUGA ukuskena kuyancitshiswa kwizigulane ezineengcamango zentliziyo engavumelekanga, ingakumbi i-fibrillation ye-atrial .
Kwakhona, i-MUGA ukuskena ayinakunika ulwazi oluninzi malunga nomsebenzi weentsimbi zentliziyo, nokuba ingaba i- hypertrophic ventricular . I-echocardiogram, ngokuchaseneyo, ilungele ukufumana ulwazi olunje. Ngoko ke, kubantu abaninzi abaneengxaki zentliziyo ekhunjulwayo, isiskripthi se-MUGA kufuneka sisetyenziswe ngokunxulumene nezinye iimvavanyo zengqondo ukuze zithole ngokupheleleyo umfanekiso njengoko kunokwenzeka imeko yomntu jikelele.
> Imithombo:
> Hendel RC, uBerman DS, iDi Carli MF, et al. I-ACCF / ASNC / ACR / AHA / ASE / SCCT / SCMR / SNM 2009 Iimpawu ezifanelekileyo zokusetyenziswa kwe-Cardiac Radionuclide Imaging: Ingxelo yeKholeji yaseMerika yeCardiology Foundation Iimpawu ezifanelekileyo zokusetyenziswa, i-American Society of Nuclear Cardiology, i-American College of I-Radiology, i-American Heart Association, i-American Society of Echocardiography, i-Society of Cardiovascular Computed Tomography, i-Society for Cardiovascular Magnetic Resonance, kunye noMbutho weNyukliya. Ukuhamba ngo-2009; 119: e561.