I-magnetic resonance venography (MRV) uvavanyo lokucambula olusetyenziselwa ukucinga ngethambo emzimbeni. Imifuno imilambo yegazi ezisa igazi kwizitho zomzimba wakho emva kwentliziyo yakho nemiphunga, ngoko igazi lingazaliswa nge-oxygen kunye nezondlo.
Indlela i-Venography Resonance Works ngayo
Akumangalisi ukuba i-MRV yenziwe ngokusetyenziswa kwesicatshulwa esifanayo esisetyenziselwa ukuboniswa kwemifanekiso yamagnetic (MRI), umshini omkhulu osebenzisa ubuchule obuqilima kunye nokuthakazelisayo ukwenza umfanekiso omela oko kwenzeka ngaphakathi umzimba).
Ngokukodwa, umshini we-MRI usebenzisa amatshini akhethekileyo athi "ukufunda" ulwazi, oluthunyelwa kwikhomputha ene-software engakhethiweyo, echanekileyo engakwazi ukutolika ulwazi oluveliswe kwizixhobo zamagnetic.
Le ngcaciso isetyenziselwa ukuphinda iphinde ibe nomfanekiso womzimba, apho iqela lakho lononophelo lwempilo liyakubheka ngayo njengoko livavanya ingxaki yakho yonyango.
Umshini we-MRI ungaguqulelwa ukujonga imifanekiso yamacandelo ahlukeneyo omzimba, kubandakanywa imilo, indawo eziqinileyo kunye negazi okanye imithwalo yegazi. Ngamanye amaxesha i-MRI isetyenziselwa ukujonga izicubu, ukulimala okubuhlungu kunye nezifo ezinjenge-stroke.
Ngokuboniswa kwemithambo yegazi, kubalulekile ukungadibanisi i-Magnetic Resonance Angiography (MRA) nge-MRV. I-MRA isetyenziselwa ukujonga imirhoxo (uhlobo lwesitya segazi esithwala igazi elityebileyo kwizitho zomzimba) ngelixa i-MRV ibheka imivini.
Injongo yeMagnography Resonance Venography
I-MRV isetyenziselwa ukuhlola ukuhamba kwegazi kwimifuno kwaye iyakwazi ukubona ama-clots okanye igazi elingaqhelekanga.
Uninzi lwezifo ezinomkhuhlane wegazi, ezifana nokubetha kunye nokuhlaselwa kwentliziyo, kubangelwa ziziingxaki zeetriyeri, kungekhona ngeengxaki zemithanjeni.
Ngokuqhelekileyo, izifo zeemvini aziqhelekanga kunezifo zeetriyri. Kananjalo, ngokuphindaphindiweyo kunokuba kunjalo, iimeko zonyango ezibandakanya iimvumba zivame ukungathí sina kangangoko kuneemeko ezibangelwa isifo esichaphazelekayo.
Yingakho kuqhelekile ukuva malunga ne-MRI (eyenza umfanekiso wesigqeba ngokwawo, kungekhona imithwalo yegazi) okanye i-MRA (ejolise ekudaleni umfanekiso we-artery) kunokuba ive nge-MRV.
Umfanekiso omkhulu apha kukuba ukuba ufuna ukuba ne-MRV, mhlawumbi ugqirha wakho ukuvavanya ngeengxaki zempilo engezantsi ezingathatha ixesha ukuxilonga. Ezinye zeengxaki zibandakanya ukungavumeleki kwesisu okanye iingxaki zokuhamba kwegazi kwingqondo, ukungaphumeleli kwintsholongwane ephucukileyo kwintsana encinane kakhulu, kunye / okanye iimbambo zegazi ezichaphazela iimvini, kunokuba iirriyiti.
Enye imeko ehlolwayo kunye ne-MRV ibizwa ngokuba yi-cerebral thrombosis thrombosis, egazini legazi kwiimvini zengqondo. Nangona izibetho kunye nezifo zengqondo zingavamile kakhulu kubasetyhini abasebancinini bokubeletha, kunomngcipheko okhulayo xa ukhulelwe.
Ukongezelela, ngamanye amaxesha, isakhiwo sengqondo somntwana osakhulayo okanye umntwana osencinane asenokungabonakali njengoko kulindeleke, kwaye ingqondo ye-MRV ingenza ingqiqo ukuba ukuphuma kwegazi okanye isakhiwo esingavumelekanga seemvini kungabangela inxaxheba. Ekugqibeleni, iimeko ezinjenge- intracranial hypertenal okanye ingcinezelo eqhelekileyo i-hydrocephalus (i-NPH) ingabangela iimpawu ze-neurological, ezinokuhlolwa kunye ne-MRV.
Ukungqinelana kokungena kwe-MRV
Umshini we-MRI usebenzisa i-magnet, ngoko ke awukwazi ukufumana i-MRV (okanye i-MRI okanye i-MRA) ukuba unesicatshulwa setsimbi esakhiweyo emzimbeni wakho. Amandla ombane onamandla asetyenziswa kumatshini we-MRI angabangela iingxaki ezinzulu, ezifana nokuchithwa kwamagnet okanye ukulimala. Ngokufanayo, ukuba une-pacemaker, i-magnet ingabangela ukuba i-pacemaker ingasebenzi kakuhle, ibe nemiphumo emibi.
ILizwi
I-MRV ayilona vavanyo oluqhelekileyo lokuhlola. Ukuba uvavanywa kwimeko ekhethekileyo yonyango, okanye ukuba unengxaki yezokwelapha ezithatha ixesha elithile ukuxilonga, unokuba ukhathazekile malunga noko ukulindele.
Njengoko uhamba nale nkqubo, qi ni sekisa ukuba ufumane uninzi lwezempilo lwakho ngokubuza imibuzo kunye nokuthetha neqela lakho lezonyango.
> Imithombo:
> Ukhupha uM, uDudink J, uRaybaud C, uRamenghi L, i-Lequin M, i-Govaert P. Ubunzima beentlungu kwiintsana ezisandula. I-Med Med Child Neurol. Ngo-2015 uMar; 57 (3): 229-40
> Bidot S, uSaindane AM, uPeragallo JH, uBruce BB, u-Newman NJ, uByousse V. Ubungcamango beBrain kwi-idiopathic intracranial hypertension. J Neuroophthalmol . NgoDisemba ka-2015; 35 (4): 400-11