Magnetic resonance angiography

Magnetic resonance angiography (MRA) ndi mayeso a MRI amitsempha yamagazi. Mosiyana ndi zojambula zakale zomwe zimaphatikizapo kuyika chubu (catheter) mthupi, MRA siyowonekera.

Mutha kupemphedwa kuvala chovala chaku chipatala. Muthanso kuvala zovala zopanda zomangira zachitsulo (monga thukuta ndi t-sheti). Mitundu ina yazitsulo imatha kubweretsa zithunzi zosalongosoka.

Mudzagona pa tebulo laling'ono, lomwe limalowa mu sikani yayikulu yooneka ngati ngalande.

Mayeso ena amafuna utoto wapadera (kusiyanitsa). Nthawi zambiri, utoto umaperekedwa musanayezedwe kudzera mumitsempha (IV) yomwe ili m'manja mwanu. Utoto umathandiza radiologist kuwona madera ena bwino lomwe.

Pa MRI, munthu amene amagwiritsa ntchito makinawo amakuwonerani kuchokera kuchipinda china. Mayesowo atha kutenga ola limodzi kapena kupitilira apo.

Mutha kupemphedwa kuti musadye kapena kumwa chilichonse kwa maola 4 kapena 6 musanajambulitse.

Uzani wothandizira zaumoyo wanu ngati mukuwopa malo oyandikira (khalani ndi claustrophobia). Mutha kupatsidwa mankhwala okuthandizani kuti mukhale ogona komanso osakhala ndi nkhawa. Wopereka wanu atha kunena za MRI "yotseguka". Mu MRI yotseguka, makinawo sali pafupi ndi thupi.

Asanayesedwe, uzani omwe akukuthandizani ngati muli ndi:

• Zithunzi za ubongo
• Vuto lopangira mtima
• Mtetezi wamtima kapena pacemaker
• Zodzala zamakutu zamkati (cochlear)
• Insulini kapena doko la chemotherapy
• Chipangizo cha intrauterine (IUD)
• Matenda a impso kapena dialysis (mwina simungathe kusiyanitsa)
• Neurostimulator
• Zowayika posachedwa
• Mphamvu yamitsempha
• Ankagwira ntchito ndi chitsulo m'mbuyomu (mungafunike kuyesa kuti muwone ngati zidutswa zazitsulo zili m'maso mwanu)

Chifukwa MRI imakhala ndi maginito amphamvu, zinthu zachitsulo siziloledwa kulowa mchipindacho ndi sikani ya MRI. Pewani kunyamula zinthu monga:

• Zikopa, zolembera, ndi magalasi amaso
• Mawotchi, makhadi a ngongole, zodzikongoletsera, ndi zothandizira kumva
• Zipini zopangira tsitsi, zipi zachitsulo, zikhomo, ndi zinthu zina zofananira
• Zipatso za mano zochotseka

Kuyesedwa kwa MRA sikumapweteka. Ngati mukukumana ndi mavuto ogona kapena mukuchita mantha kwambiri, mutha kupatsidwa mankhwala (ogonetsa) kuti musangalale. Kusuntha kwambiri kumatha kusokoneza zithunzi ndikupanga zolakwika.

Gome likhoza kukhala lolimba kapena lozizira, koma mutha kufunsa bulangeti kapena pilo. Makinawo amapanga phokoso lalikulu ndikumveketsa mukatsegulidwa. Mutha kuvala mapulagi amakutu kuti muchepetse phokoso.

Intakomu m'chipindamo imakupatsani mwayi wolankhula ndi munthu nthawi iliyonse. Makina ena okhala ndi ma televizioni ndi mahedifoni apadera omwe mungagwiritse ntchito kuthandizira nthawiyo.

Palibe nthawi yochira, pokhapokha mutapatsidwa mankhwala oti musangalale.

MRA imagwiritsidwa ntchito kuyang'ana mitsempha yamagazi m'mbali zonse za thupi. Kuyesaku kungachitike pamutu, pamimba, pamimba, m'mapapo, impso, ndi miyendo.

Itha kugwiritsidwa ntchito kuzindikira kapena kuwunika zinthu monga:

• Arterial aneurysm (kukulira modabwitsa kapena kubaluni kwa gawo lamitsempha chifukwa chofooka pakhoma la chotengera chamagazi)
• Matenda aortic
• Kutseka kwa minyewa
• Sitiroko
• Matenda a mitsempha ya Carotid
• Atherosclerosis ya mikono kapena miyendo
• Matenda amtima, kuphatikiza matenda obadwa nawo amtima
• Mitsempha ya Mesenteric ischemia
• Aimpso mtsempha wamagazi stenosis (kuchepa kwa mitsempha ya impso)

Zotsatira zabwinobwino zimatanthauza kuti mitsempha yamagazi siziwonetsa zizindikilo za kuchepa kapena kutsekeka.

Zotsatira zosazolowereka zimawonetsa vuto ndi mtsempha umodzi kapena zingapo zamagazi. Izi zitha kunena kuti:

• Matenda a m'mimba
• Zowopsa
• Matenda obadwa nawo
• Matenda ena

MRA nthawi zambiri amakhala otetezeka. Sigwiritsa ntchito radiation. Pakadali pano, palibe zovuta kuchokera kumaginito ndi mawailesi omwe adanenedwa.

Mtundu wofala kwambiri womwe umagwiritsidwa ntchito uli ndi gadolinium. Ndi otetezeka kwambiri. Thupi lawo siligwirizana ndi zinthu sizichitika kawirikawiri. Komabe, gadolinium itha kuvulaza anthu omwe ali ndi vuto la impso omwe amafunikira dialysis. Ngati muli ndi vuto la impso, chonde uzani omwe amakupatsani chithandizo asanayesedwe.

Mphamvu zamaginito zomwe zimapangidwa mu MRI zimatha kupangitsa kuti mtima uzikhala wolimba komanso zopangira zina kuti zisagwire ntchito. Zitha kupanganso chitsulo mkati mwathupi kusuntha kapena kusintha.

MRA; Angiography - maginito amvekedwe

• Kujambula kwa MRI

Mmisiri wamatabwa JP, Litt H, Gowda M. Magnetic resonance imaging and arteriography. Mu: Sidawy AN, Perler BA, olemba. Rutherford Opaleshoni ya Mitsempha ndi Endovascular Therapy. 9th ed. Philadelphia, PA: Elsevier; 2019: mutu 28.

Kwong RY. Kujambula kwa mtima wamagnetic. Mu: Zipes DP, Libby P, Bonow RO, Mann DL, Tomaselli GF, Braunwald E, olemba. Matenda a Mtima a Braunwald: Buku Lophunzitsira la Mankhwala Amtima. 11th ed. Philadelphia, PA: Elsevier; 2019: chap.