Magnetic resonance venography (MRV) ndi mayeso ojambula zithunzi omwe amagwiritsidwa ntchito kuti aganizire mitsempha m'thupi. Mitsempha ndi mitsempha yamagazi yomwe imabweretsa magazi kuchokera ku ziwalo za thupi lanu kubwerera m'mtima ndi m'mapapu, choncho magazi akhoza kubweretsedwa ndi mpweya ndi zakudya.
Momwe Magnetic Resonance Venleton Imagwirira Ntchito
Simungadabwe kuti MRV imagwiritsidwa ntchito pogwiritsira ntchito zipangizo zamankhwala zomwe zimagwiritsidwa ntchito pa kujambula kwa maginito (MRI), yomwe ndi makina akulu omwe amagwiritsa ntchito njira yopambana komanso yochititsa chidwi kuti apange chithunzi chomwe chimaimira zomwe zikuchitika mkati mwa thupi).
Makamaka, makina a MRI amagwiritsa ntchito maginito apadera omwe "amawerenga" zambiri, zomwe zimatumizidwa ku kompyutala yomwe ili ndi mapulogalamu odziwika, omwe angathe kutanthauzira uthenga wopangidwa kuchokera ku maginito.
Chidziwitso ichi chimagwiritsidwa ntchito kubwezeretsanso fano la thupi lomwe gulu lanu la thanzi likhoza kuyang'ana pamene akuyesa vuto lanu lachidwi.
Makina a MRI angasinthidwe kuti aganizire mafano a ziwalo zosiyanasiyana za thupi, kuphatikizapo maonekedwe, malo olimba, ndi mitsempha ya magazi kapena mitsempha. Nthaŵi zina MRI imagwiritsidwa ntchito kuyang'ana zotupa, kuvulala koopsa, ndi matenda monga stroke.
Poyang'ana mitsempha ya mitsempha, nkofunika kusokoneza Magnetic Resonance Angiography (MRA) ndi MRV. MRA imagwiritsidwa ntchito kuyang'ana mitsempha (mtundu wamagazi omwe umabweretsa magazi okosijeni ku ziwalo za thupi) pamene MRV ikuyang'ana mitsempha.
Cholinga cha Magnetic Resonance Venography
MRV imagwiritsidwa ntchito kuyesa magazi m'mitsempha ndipo ikhoza kuzindikira kupha magazi kapena zina zolakwika.
Ambiri mwa matenda akuluakulu a mitsempha ya magazi, monga matenda a stroke ndi matenda a mtima, amayamba ndi mavuto a mitsempha, osati ndi mavuto a mitsempha.
Kawirikawiri, matenda a mitsempha sali ochepa kusiyana ndi matenda a mitsempha. Komanso, nthawi zambiri, matenda omwe amaphatikizapo mitsempha imakhala yochepa kwambiri kusiyana ndi mikhalidwe yomwe imayambitsa matenda oopsa.
Ichi ndichifukwa chake zimakhala zofala kwambiri kumva za MRI (zomwe zimapanga chithunzi cha limba palokha, osati mitsempha ya mitsempha) kapena MRA (yomwe ikuyang'ana kupanga chithunzi cha mitsempha) kusiyana ndi kumva za MRV.
Chithunzi chachikulu apa ndi chakuti ngati mukufuna kukhala ndi MRV, ndiye kuti adokotala akukuyang'anirani chifukwa cha vuto la thanzi limene lingatenge nthawi kuti mudziwe. Zina mwa mavutowa ndi monga zovuta zowonongeka kapena mavuto a m'magazi, ubongo wambiri wa mwana wamng'ono, ndi / kapena magazi omwe amakhudza mitsempha, osati mitsempha.
Chinthu chimodzi chomwe chimayesedwa ndi MRV chimatchedwa cerebral venous thrombosis, yomwe imakhala magazi m'mitsempha ya ubongo. Ngakhale kuti sitiroko ndi matenda a ubongo si zachilendo kwa atsikana omwe ali ndi msinkhu wobereka, chiwopsezo chikuwonjezeka panthawi ya mimba.
Kuonjezera apo, nthawi zina, ubongo wa mwana yemwe akukula kapena mwana wamng'ono sungakhoze kuwoneka monga momwe amayembekezerekera, ndipo ubongo wa MRV ukhoza kumvetsetsa ngati kutuluka kwa magazi kapena kapangidwe kake ka mitsempha kungakhale chothandizira. Potsirizira pake, zinthu monga intracranial hypertension kapena matenda oopsa hydrocephalus (NPH) angayambitse matenda a ubongo, omwe angayesedwe ndi MRV.
Kusamvana kwa Pulogalamu ya MRV
Mankhwala a MRI amagwiritsa ntchito maginito, choncho simungathe kukhala ndi MRV (kapena MRI kapena MRA) ngati muli ndi chipangizo chopangidwa ndi zitsulo m'thupi lanu. Mphamvu ya maginito amphamvu yogwiritsidwa ntchito mu makina a MRI ingayambitse mavuto aakulu, monga kusokoneza magnet kapena kuvulala. Mofananamo, ngati muli ndi pacemaker, maginito amachititsa kuti pacemaker isagwire ntchito, ndipo zotsatira zake zingakhale zovuta.
Mawu Ochokera
MRV siyeso yowonetsera matenda. Ngati mukuyesedwa kuti mukhale ndi matenda apadera, kapena ngati muli ndi vuto lachipatala lomwe limatenga nthawi kuti mudziwe, mungakhale oopsya pa zomwe muyenera kuyembekezera.
Pamene mukudutsa njirayi, onetsetsani kuti mumapindula kwambiri ndi chisamaliro chanu mwa kufunsa mafunso ndikuyankhula ndi gulu lanu lachipatala.
> Zotsatira:
> Amalankhula M, Dudink J, Raybaud C, Ramenghi L, Lequin M, Govaert P. Brain matenda a mitsempha mwa makanda obadwa kumene. Dev Med Child Neurol. 2015 Mar; 57 (3): 229-40
> Bidot S, Saindane AM, Peragallo JH, Bruce BB, Newman NJ, Biousse V. Brain amaganiza kuti ali ndi matenda opatsirana opatsirana. J Neuroophthalmol . 2015 Dec; 35 (4): 400-11