Mafunde a maginito amatha kuchotsa kapena kuwononga zipangizo zina
Anthu oposa 2 miliyoni a ku America ali ndi chipangizo chochiritsira chomwe amapanga 50 peresenti omwe amafunika kuunika komwe kumafuna kugwiritsira ntchito maginito otchedwa resonance imaging (wotchedwa MRI scan ). MRIs amagwiritsidwa ntchito kuti azindikire ndi kuyang'anira mitundu yambiri ya mankhwala, kuphatikizapo matenda a mitsempha ndi a mtima. Komabe, anthu okhala ndi mtundu wina wa zitsulo sangathe kuchitapo kanthu.
Chifukwa chomwe MRIs amagwiritsira ntchito mphamvu yamaginito kwambiri kuti apange zithunzi zojambulidwa. Zitsulo zina zazitsulo sizingangosokoneza mafano, zimatha kukhudza mafunde amphamvu kwambiri.
Mafilimu ambiri (RF) omwe amapangidwa ndi MRI angachititse kuti zipangizo zina zisamagwire ntchito kapena zisamatenthe kwambiri, zomwe zingasokoneze chipangizocho ndikuvulaza munthuyo. Kuthamangitsidwa ndi kuthamangitsidwa kwa chokhazikika kwadziwikiranso kuti chikuchitika.
Mapulogalamu Ambiri Omwe Amakhudzidwa ndi Amayi
Zida zowonjezereka zomwe zimakhala zovuta kwambiri pa nthawi ya ma ARV zimaphatikizapo:
- otetezera
- mavitamini a mtima wa prosthetic
- zopangira zitsulo mu ubongo wa wodwalayo
- zopangira zitsulo mu diso kapena makutu a wodwalayo
- catheters kulowetsedwa
Anthu ambiri okhala ndi mitundu iyi ya implants sangathe kukhala ndi MRI. Kuwonjezera apo, anthu omwe anavulala ndi zipolopolo kapena zida, kapena omwe amagwira ntchito ndi zitsulo, ayenera kufunsidwa mwachindunji kuti aone ngati MRI ingatheke.
Sikuti zipangizo zonse zitsulo zimakhudzidwa ndi MRI. Ena asankhidwa kukhala "MRI otetezeka" pamene ena amatengedwa kuti "MRI yokhazikika." Ndipotu ena mwazitsulo zamakono komanso zowonjezereka zimagwiritsa ntchito matekinoloje apamwamba ndipo amawonedwa kuti ndi otetezeka pamene ali ndi mphamvu za MRI.
Mitundu ya Ferromagnetic ndi Mitundu Yachimake Yachiberekero
Pali mitundu iwiri ya zitsulo zomwe zimagwiritsidwa ntchito, kaya mbali kapena zonse, m'zinthu zina.
Mmodzi ndi ferromagnetic ndipo winayo alibe ferromagnetic.
Zitsulo zapromromagnetic monga chitsulo, nickel, ndi cobalt ndizo zomwe, zikaikidwa mu maginito, zimakhala maginito okha. Pamene zitsulozi zimagwidwa ndi MRI, mavuto akhoza kuchitika.
Choyamba, MRI ndi ferromagnetic metal zimakhala maginito omwe ali ndi vuto loipa. Mofanana ndi magetsi onse, awiriwo amakopeka ndipo nthawi yomweyo agwirizane polekeza. Maginito amodzi (MRI) olemera matani angapo ndipo winayo (kuika kwa ferromagnetic) polemera ma ounces angapo, mphamvu yamphamvu yamaginito ingayambitse kupangira, kutembenuka, ndi kuchotsa kwathunthu.
Zitsulo zosagwiritsa ntchito ferromagnetic ndizo zomwe sizikhala magetsi pamtundu wa MRI. Izi sizikutanthawuza, komabe, kuti sadzakhala opanda mavuto. Zitsulo zosagwiritsa ntchito ferromagnetic zimatha kusokoneza maginito opangidwa ndi MRI ndi kusokoneza mafano kuti asawerenge bwino.
Kuwonjezera pamenepo, RF mphamvu yomwe imapangidwa ndi MRI ingayambitse vuto linalake lopangidwa ndi chitsulo chomwe chingathe kukhala chithunzithunzi cha wailesi. Izi zikachitika, chitsulocho chimatha kutenga mphamvu za RF ndikuyamba kuwononga, zomwe zingayambitse kuyika ndi minofu yowzungulira.
Metal Implants ndi MRI Safety
Masiku ano, mipangidwe yambiri ya zitsulo, kuphatikizapo ma prostheses a mafupa ndi implants a mano, amapangidwa ndi zitsulo zotetezedwa ndi MRI monga titaniyano. Izi zimaphatikizapo zida zotsalira za hip ndi mabondo (mbale, zokopa, ndodo) ndi zowonjezera.
Ngakhale kuti mapulaneti onsewa angasokoneze chithunzi cha MRI ngati pafupi ndi gawo la thupi likuyesedwa, kawirikawiri sichimayambitsa mavuto omwe asayansi sangakwanitse kugonjetsa.
Pankhani ya chitetezo cha MRI, mfundo yaikulu ndi iyi: Nthawi zonse muziwalangiza dokotala wanu ndi ogwira ntchito za MRI kuti mukhale ndi zinthu zina zomwe sangakhale nazo. Ngakhale mukuganiza kuti mapulogalamuwa ndi ogwirizana, nkofunika kuti odziwawa adziwe kuti awatsimikizire kuti mwina MRI ili bwino kapena MRI.
Zina zomwe mungachite ( CT scans , PET scans ) zingakhalepo.
> Chitsime:
> American College of Cardiology. "MRI mu Odwala Amene Ali ndi Magetsi Opangidwa: Mikangano Yamakono - Akatswiri Ofufuza." Washington, DC; August 1, 2016.