1.5T vs 3T MRI - kusiyana kwake ndi kotani?

Ma scanner ambiri a MRI omwe amagwiritsidwa ntchito mu zamankhwala ndi 1.5T kapena 3T, ndipo 'T' ikuyimira gawo la mphamvu ya maginito, lotchedwa Tesla. Ma scanner a MRI okhala ndi ma Tesla apamwamba amakhala ndi maginito amphamvu kwambiri mkati mwa bore la makina. Komabe, kodi zazikulu nthawi zonse zimakhala bwino? Pankhani ya mphamvu ya maginito ya MRI, sizili choncho nthawi zonse.

MRI yamphamvu kwambiri ya maginito sikutanthauza kuti munthu azitha kuyeza bwino matenda ake. Ndipotu, kusankha bwino MRI kumadalira zinthu zosiyanasiyana monga ziwalo zomwe zikujambulidwa, chitetezo cha wodwala komanso chitonthozo chake, komanso mtundu wa kujambula. Ndiye, ndi liti pamene kuli koyenera kugwiritsa ntchito scanner ya 1.5T kapena 3T? Tiyeni tiwone kusiyana kwakukulu pakati pa ziwirizi.

Chitetezo ndi liwiro la chithunzi

Kulinganiza liwiro la scan ndi kusunga kutentha kwa thupi kumakhala kovuta mu MRI ya thupi lonse. Chimodzi mwa zinthu zomwe zimachokera ku MRI ndikuwonjezera kutentha kwa thupi, chifukwa minofu ya thupi imayamwa mphamvu yamagetsi panthawi ya scan, yomwe imadziwika kuti Specific Absorption Rate (SAR). Mukasanthula ndi makina a 1.5T, malire otenthetsera amafikiridwa pamalo enaake panthawi ya scan. Ngati scan yomweyi inachitika ndi 3T scanner, kutentha kwa thupi kumakwera kanayi, kupitirira malire a kutentha ndi kanayi. Pali njira zothetsera vutoli, monga kupatula nthawi ya scan kuti muwonjezere nthawi ya scan kapena kuchepetsa kutsimikiza kwa scans. Chifukwa chake, kugwiritsa ntchito 1.5T MRI ndikoyenera chifukwa kumapereka chidziwitso chomasuka komanso chotetezeka kwa wodwalayo popanda kuwononga mawonekedwe a chithunzi.

Kujambula Odwala Ndi Zipatso Zosalowa M'thupi

Chodetsa nkhawa chachikulu pa mayeso aliwonse ojambula zithunzi ndi kuchuluka kwa chitetezo, ndichifukwa chake mayeso onse ojambula zithunzi ali ndi malangizo okhwima kwambiri. Ponena za MRI, nthawi zambiri, odwala amatha kujambulidwa mosamala pogwiritsa ntchito makina a 1.5T ndi 3T MRI.

Komabe, mphamvu yayikulu ya maginito imabwera ndi zoopsa zambiri. Odwala omwe ali ndi zida zoyikira zitsulo ndi zida, kuphatikizapo makina oletsa kupweteka, AIDS yomvera, ndi mitundu yonse ya zoyikira, ali ndi mwayi wokhudzidwa kwambiri ndi mphamvu ya maginito mu zoyikira za 3T. Chifukwa chake, odwalawa angakhale otetezeka ndi choyikira cha 1.5T MRI.

Ubwino wa kujambula

Kulondola kwa zithunzi za MRI ndikofunikira kwambiri pakupeza matenda enieni komanso kuzindikira zolakwika m'thupi. Nthawi zambiri zimaganiziridwa kuti MRI yokhala ndi mphamvu yamaginito yochulukirapo ingapangitse zithunzi zabwino kwambiri. Ngakhale izi ndi zoona nthawi zina, makina a 1.5T MRI ndi othandiza kwambiri pojambula zithunzi, pomwe makina a 3T MRI nthawi zambiri amagwiritsidwa ntchito kujambula zithunzi zatsatanetsatane za kapangidwe kakang'ono monga ubongo kapena dzanja.

Ubwino wa zithunzi za MRI ndi wofunikira kwambiri pakupeza matenda molondola komanso kuzindikira zolakwika. Chojambulira cha 3T MRI chimagwiritsidwa ntchito bwino pojambula madera ang'onoang'ono monga ubongo ndi mafupa ang'onoang'ono. Komabe, mphamvu ya maginito yokwera ikhoza kukhala lupanga lakuthwa konsekonse. Vuto limodzi ndilakuti makina a 3T MRI amakhala osavuta kujambula zinthu zakale. Zolepheretsa zomwe zikuchitika za 3T msana ndi thupi zimaphatikizapo kukhudzidwa ndi mpweya m'matumbo, zomwe zimatha kubisa ziwalo zozungulira, komanso mphamvu ya dielectric, komwe madera a chithunzicho amawoneka amdima chifukwa cha kutalika kwa nthawi ya radiofrequency yomwe imagwiritsidwa ntchito pojambula zithunzi za 3T. Palinso kuwonjezeka kwa zinthu zakale zomwe zimachitika chifukwa cha madzi. Mavuto onsewa amatha kukhudza ubwino wa scan.

Mu Mawu Amodzi

Ngakhale zingawoneke ngati scanner ya MRI yamphamvu kwambiri ndiyo njira yabwino kwambiri, si nkhani yonseyi. M'dziko langwiro, akatswiri a radiology angafune kuti MRI ipange zithunzi zapamwamba kwambiri kwa odwala awo mwachangu komanso mosamala. Komabe, zenizeni zikuwonetsa kuti simungathe kukhala ndi imodzi popanda kuwononga. Ndiye, kodi mupeza scan yachangu popanda kuwononga mtundu wa chithunzi? Kapena sankhani scan yotetezeka, koma muika odwala pachiwopsezo chowonekera pamakina kwa nthawi yayitali? Yankho lolondola limadalira kwambiri kugwiritsa ntchito koyamba kwa MRI.

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