I-magnetic resonance venography (MRV) isilingo sokuhlola izithombe esetshenziselwa ukubona ngeso lengqondo imithanguzo emzimbeni. Imifino yimizila yegazi efaka igazi egazini lomzimba wakho emuva kwenhliziyo yakho namaphaphu, ngakho igazi lingagcwaliswa nge-oxygen nezakhi.
Yeka ukuthi i-Magnetic Resonance Venography isebenza kanjani
Ngeke kusimangaze ukuthi i-MRV yenziwa ngokusebenzisa imishini efanayo yezokwelapha esetshenziselwa ukucabanga kwe- magnetic resonance (MRI), umshini omkhulu osebenzisa inqubo eyinkimbinkimbi nokuthakazelisayo ukwenza isithombe esimele okwenzeka ngaphakathi umzimba).
Ngokuqondile, umshini we-MRI usebenzisa ama-magnets akhethekile okuthi "funda" ulwazi, oluthunyelwa kwikhompyutha ene-inthanethi eyakhelwe ngaphakathi, engalinganiselwe engakwazi ukuhumusha ulwazi olwenziwe kwimishini yamagnetic.
Lolu lwazi lusetshenziselwa ukuphinda lusethe isithombe somzimba, okuyinto ithimba lakho lokunakekelwa kwezempilo lingabuka njengoba lihlola inkinga yakho yezokwelapha.
Umshini we-MRI ungaguqulwa ukuze ubone ngeso lengqondo izithombe zezingxenye ezahlukene zomzimba, kufaka phakathi izimo, izindawo eziqinile, nemithwalo yegazi noma yegazi. Ngezinye izikhathi i-MRI isetshenziselwa ukubuka izicubu, ukulimala okubuhlungu, nezifo ezinjenge-stroke.
Ngokubukwa kwemisipha yegazi, kubalulekile ukuthi ungadideli i-Magnetic Resonance Angiography (MRA) nge-MRV. I-MRA isetshenziselwa ukubheka imishanguzo (uhlobo lwesitsha segazi eliletha igazi elicebile oksijini ezithombeni zomzimba) ngenkathi i-MRV ibheka imivimbo.
Inhloso yeMagnetic Resonance Venography
I-MRV isetshenziselwa ukuhlola ukugeleza kwegazi emithanjeni futhi ingakwazi ukubona ama- blood clots noma ezinye izinto ezingavamile.
Eziningi zezifo ezithwala igazi, ezifana nokushaya kwesifo nesifo senhliziyo, zibangelwa izinkinga ezine-arteries, hhayi ngezinkinga zemithanjeni.
Ngokuvamile, izifo ze-veins azifani kakhulu kunezifo ze-arteries. Kanti futhi, kaningi kunalokho, izimo zezokwelapha ezibandakanya imithanjeni zivame ukungathí sina kunezimo ezibangelwa isifo esihlasela.
Yingakho kuvame ukuzwa nge-MRI (eyenza isithombe sesitho ngokwazo, hhayi kakhulu imithwalo yegazi) noma i-MRA (okugxile ekwakheni isithombe somthambo) kunokuzwa nge-MRV.
Isithombe esikhulu lapha ukuthi uma udinga ukuba ne-MRV, kungenzeka ukuthi udokotela wakho ukulinganisa inkinga yezempilo engavamile engathatha isikhashana ukuxilongwa. Ezinye zalezi zinkinga zibandakanya ukungavamile kwezakhiwo noma izinkinga zokugeleza kwegazi ebuchosheni, ukukhubazeka okubangelwa yizinyosi emntwaneni osencane kakhulu, kanye / noma izindwangu zegazi ezithinta imithanjeni, kunokuba imishanguzo.
Isimo esithile esithile esihlolwe nge-MRV ibizwa ngokuthi i-cerebral thrombosis ene-cerebral, okuyi-blood clot emithanjeni yobuchopho. Nakuba izigameko nezifo zobuchopho zingavamile kakhulu kwabesifazane abasha abaneminyaka yobudala yokubeletha, kunengozi encane ngesikhathi sokukhulelwa.
Ngaphezu kwalokho, ngezinye izikhathi, isakhiwo sobuchopho somntwana okhulayo noma usana olusencane angeke lubonakale njengoba kulindeleke, futhi i-MRV yobuchopho ingabonisa ukuthi ukugeleza kwegazi noma isakhiwo esingavamile emithanjeni kungabangela yini. Okokugcina, izimo ezinjengokucindezeleka komfutho wegazi ophezulu noma ingcindezi evamile i-hydrocephalus (i-NPH) ingabangela izimpawu ze-neurological, ezingahlolwa nge-MRV.
Ukuqhathaniswa kokungena kwe-MRV
Umshini we-MRI usebenzisa i-magnet, ngakho-ke awukwazi ukuba ne-MRV (noma i-MRI noma i-MRA) uma unedivayisi yensimbi efakwe emzimbeni wakho. Amandla kagesi anamandla asetshenziselwa umshini we-MRI angabangela izinkinga ezinkulu, ezifana nokuhlukaniswa kwamagnet noma ukulimala. Ngokufanayo, uma une-pacemaker, i-magnet ingabangela ukuthi i-pacemaker ingasebenzi kahle, nemiphumela engaba yingozi.
Izwi elivela
I-MRV akuyona ukuhlolwa okujwayelekile kokuxilonga. Uma uhlolwa ngesimo sezokwelapha esikhethekile, noma uma unenkinga yezokwelapha ethatha isikhashana ukuxilonga, ungase ukhathazeke ngalokho okumele ukwenze.
Njengoba uqhubeka nale nqubo, qiniseka ukuthi uthola okuningi ekunakekelweni kwezempilo ngokubuza imibuzo nokuxhumana neqembu lakho lezokwelapha.
> Imithombo:
> Ukhulisa uM, uDudink J, uRaybaud C, uRamenghi L, uLequin M, iGovaert P. Brain izinkinga zezinsana ezinsana ezisanda kuzalwa. I-Dev Med Child Neurol. 2015 uMar; 57 (3): 229-40
> I-Bidot S, uSaindane AM, uPeragallo JH, uBruce BB, uNewman NJ, uByousse V. Brain ekucabangeni nge-hypertension ye-idiopathic engavamile. J Neuroophthalmol . 2015 Dec; 35 (4): 400-11