I-angiography yamagnetic resonance

I-Magnetic resonance angiography (MRA) ukuhlolwa kwe-MRI yemithambo yegazi. Ngokungafani ne-angiography yendabuko ebandakanya ukufaka ishubhu (ipayipi) emzimbeni, i-MRA ayifuni.

Ungacelwa ukuthi ugqoke ingubo yasesibhedlela. Ungagqoka futhi izingubo ezingenazo izinto zokubopha zensimbi (njengezikibha zezithukuthuku nesikibha). Izinhlobo ezithile zensimbi zingadala izithombe ezifiphele.

Uzolala etafuleni elincane, elingena kuskena esikhulu esime njengomhubhe.

Ezinye izivivinyo zidinga udayi okhethekile (umehluko). Imvamisa, udayi unikezwa ngaphambi kokuhlolwa ngomthambo (IV) osesandleni sakho noma engalweni. Idayi isiza udokotela we-radiologist ukuthi abone izindawo ezithile ngokucace kakhudlwana.

Ngesikhathi seMRI, umuntu osebenzisa umshini uzokubuka ukwelinye igumbi. Ukuhlolwa kungathatha ihora eli-1 noma ngaphezulu.

Ungacelwa ukuthi ungadli noma uphuze noma yini amahora amane kuya kwayisithupha ngaphambi kokuskena.

Tshela umhlinzeki wakho wezokunakekelwa kwezempilo uma wesaba izindawo eziseduze (une-claustrophobia). Unganikezwa umuthi ozokusiza uzizwe ulele futhi ungakhathazeki kangako. Umhlinzeki wakho angaphakamisa i-MRI "evulekile". Ku-MRI evulekile, umshini awusondelene nomzimba.

Ngaphambi kokuhlolwa, tshela umhlinzeki wakho uma ngabe:

• Iziqeshana ze-aneurysm zobuchopho
• I-valve yenhliziyo yokufakelwa
• Inhliziyo defibrillator noma i-pacemaker
• Ukufakwa kwendlebe kwangaphakathi (cochlear)
• I-insulin noma imbobo yamakhemikhali
• Idivayisi ye-intrauterine (IUD)
• Isifo sezinso noma i-dialysis (ungahle ungakwazi ukuthola umehluko)
• I-Neurostimulator
• Amalunga wokufakelwa asanda kufakwa
• I-Vascular stent
• Kusetshenziswe ngensimbi yensimbi esikhathini esedlule (ungadinga ukuhlolwa ukuhlola izingcezu zensimbi emehlweni akho)

Ngoba i-MRI iqukethe odonsa abanohlonze, izinto zensimbi azivunyelwe ukungena egumbini elinesithwebuli se-MRI. Gwema ukuphatha izinto ezinjengalezi:

• Amapokhethi, amapeni nezibuko zamehlo
• Amawashi, amakhadi esikweletu, ubucwebe nezinsiza-kuzwa
• Ama-hairpins, uziphu wensimbi, izikhonkwane, nezinto ezifanayo
• Izimila zamazinyo ezisusekayo

Ukuhlolwa kwe-MRA akubangeli buhlungu. Uma unezinkinga zokulala unganyakazi noma unovalo kakhulu, unganikezwa umuthi (wokuthambisa) wokukuphumuza. Ukuhamba kakhulu kungafiphaza izithombe futhi kubangele amaphutha.

Itafula lingaba nzima noma libande, kepha ungacela ingubo noma umcamelo. Umshini ukhiqiza imisindo emikhulu yokuqhuma nokuhayiza lapho uvuliwe. Ungafaka ama-plugs endlebe ukusiza ukunciphisa umsindo.

I-intercom egumbini ikuvumela ukuba ukhulume nomuntu nganoma yisiphi isikhathi. Amanye ama-scanner anamathelevishini namahedfoni akhethekile ongawasebenzisa ukusiza isikhathi sidlule.

Asikho isikhathi sokululama, ngaphandle kokuthi unikwe umuthi wokuphumula.

I-MRA isetshenziselwa ukubheka imithambo yegazi kuzo zonke izingxenye zomzimba. Ukuhlolwa kungenzelwa ikhanda, inhliziyo, isisu, amaphaphu, izinso nemilenze.

Ingasetshenziselwa ukuxilonga noma ukuhlola izimo ezinjenge:

• I-arterial aneurysm (ukunwetshwa okungajwayelekile noma ukubhaliswa kwengxenye yomthambo ngenxa yobuthakathaka odongeni lomthambo wegazi)
• Ukuthambekela kwe-aortic
• Ukuhlukaniswa kwe-aortic
• Unhlangothi
• Isifo semithambo yeCarotid
• I-atherosclerosis yezingalo noma yemilenze
• Isifo senhliziyo, kufaka phakathi isifo senhliziyo esizalwe naso
• Umthambo we-Mesenteric ischemia
• I-renal artery stenosis (ukuncipha kwemithambo yegazi ezinso)

Umphumela ojwayelekile usho ukuthi imithambo yegazi ayikhombisi zimpawu zokuncipha noma ukuvimba.

Umphumela ongajwayelekile uphakamisa inkinga ngomthambo owodwa noma eminingi yegazi. Lokhu kungaphakamisa:

• I-atherosclerosis
• Ukuhlukumezeka
• Isifo sokuzalwa
• Esinye isimo semithambo

I-MRA ngokuvamile iphephile. Ayisebenzisi imisebe. Kuze kube manje, akukho miphumela emibi evela kumandla kazibuthe namagagasi omsakazo abikiwe.

Uhlobo oluvame kakhulu lokuqhathanisa olusetshenzisiwe luqukethe i-gadolinium. Kuphephe kakhulu. Ukusabela okweqile kulesisithako akuvamile ukwenzeka. Kodwa-ke, i-gadolinium ingaba yingozi kubantu abanezinkinga zezinso abadinga i-dialysis. Uma unezinkinga zezinso, sicela utshele umhlinzeki wakho ngaphambi kokuhlolwa.

Amandla kazibuthe aqinile adalwe ngesikhathi seMRI angadala ukuthi izinhliziyo zisebenze futhi nezinye izinto zokufakelwa zingasebenzi. Futhi zingadala ukuthi ucezu lwensimbi ngaphakathi komzimba wakho luhambe noma lushintshe.

I-MRA; I-Angiography - amandla amakhulu kazibuthe

• Ukuhlolwa kwe-MRI

Umbazi uJP, uLitt H, uGowda M. Magnetic resonance imaging kanye ne-arteriography. Ku: Sidawy AN, Perler BA, ama-eds. Rutherford’s Vascular Surgery and Endovascular Therapy. Umhlaka 9. IPhiladelphia, PA: Elsevier; 2019: isahluko 28.

I-Kwong RY. Ukucabanga kwe-resonance kazibuthe yenhliziyo. Ku: Zipes DP, Libby P, Bonow RO, Mann DL, Tomaselli GF, Braunwald E, ama-eds. Isifo Senhliziyo SikaBraunwald: Incwadi Yemithi Yezinhliziyo Nemithambo. Umhla ka-11. IPhiladelphia, PA: Elsevier; 2019: isahluko 17.