I-imaging resonance magnetic, evame ukubizwa ngokuthi i-MRI, iyindlela yokuhlola engahlaseli esetshenziswa kakhulu ochwepheshe bezempilo ukuze babone ngeso lengqondo izakhiwo zomzimba zangaphakathi.I-MRI isebenzisa amandla kazibuthe aqinile namaza omsakazo ukuze yakhe izithombe ezinemininingwane yezitho zomzimba, izicubu namathambo.
Mayelana nomshini we-MRI, umbuzo ovame ukuvela ezingqondweni zabantu ukuthi kungani igumbi le-MRI kufanele lifakwe ngethusi?Impendulo yalo mbuzo ilele ezimisweni ze-electromagnetism.
Uma umshini we-MRI uvuliwe, ukhiqiza inkambu kazibuthe enamandla engathinta amadivayisi namasistimu kagesi aseduze.Ukuba khona kwamandla kazibuthe kungaphazamisa ezinye izinto zikagesi ezinjengamakhompuyutha, amafoni, kanye nemishini yezokwelapha, futhi kungathinta ngisho nokusebenza kwezihlinzeki zenhliziyo.
Ukuze kuvikelwe lezi zixhobo futhi kugcinwe ubuqotho bemishini yokuthwebula izithombe, ikamelo le-MRI lihlanganisweucwecwe lwethusi, esebenza njengesithiyo endaweni kazibuthe.Ithusi lisebenza kahle kakhulu, okusho ukuthi limunca futhi lihlakaze amandla kagesi futhi lisebenza ngempumelelo ekuboniseni noma ekuvikeleni izizinda kazibuthe.
Ulwelwesi lwethusi oluhambisana negwebu elivikelayo kanye neplywood lwakha ikheji yaseFaraday ezungeze umshini we-MRI.Ikheji ye-Faraday iyindawo ebiyelwe eklanyelwe ukuvimba izinkambu kazibuthe kagesi futhi ivimbele ukuphazamiseka kwemishini kagesi.Ikheji lisebenza ngokusabalalisa ukushaja kagesi ngokulinganayo endaweni yonke yekheji, lisebenzisa kalula noma yiziphi izinkambu zangaphandle zikazibuthe.
I-copper foilayisetshenziselwa ukuvikela kuphela, kodwa futhi nokubeka phansi.Imishini ye-MRI idinga ukuthi imisinga ephezulu idluliswe kumakhoyili akhiqiza amandla kazibuthe.Le misinga ingabangela ukunqwabelana kukagesi omile ongalimaza amathuluzi futhi ube yingozi ezigulini.Ucwecwe lwethusi lubekwe ezindongeni naphansi kwegumbi le-MRI ukuze kuhlinzekwe indlela yokuthi le nkokhelo iphume ngokuphepha phansi.
Ngaphezu kwalokho, ukusebenzisa ithusi njengento yokuvikela kunikeza izinzuzo eziningana kunezindlela zokuzivikela zendabuko.Ngokungafani nomthofu, ithusi lithambile kakhulu futhi lingakhiwa kalula libe yizimo nobukhulu obuhlukahlukene ukuze lihlangabezane nezidingo ezithile zegumbi le-MRI.Iphinde ingabizi kakhulu futhi ivikele imvelo kunomthofu.
Ekuphetheni, amakamelo e-MRI ahlanganiswe ne-foil yethusi ngesizathu esihle.Izakhiwo zokuvikela zeucwecwe lwethusivikela okokusebenza kwezithombe ekuphazamisekeni kwangaphandle kwe-electromagnetic ngenkathi uqinisekisa ukuphepha kwesiguli nabasebenzi.I-foil yethusi ihlanganiswe nezinye izinto zokwakha ikheji ye-Faraday equkethe insimu yamagnetic eyenziwe umshini we-MRI ngendlela ephephile futhi elawulwayo.I-Copper iyi-conductor enhle kakhulu kagesi, nokusebenzisaucwecwe lwethusiiqinisekisa ukuthi umshini we-MRI usekelwe kahle.Ngenxa yalokho, ukusetshenziswa kwe-foil yethusi ekuvikeleni i-MRI sekuyinto evamile kuyo yonke imboni yezokwelapha, futhi ngesizathu esihle.
Isikhathi sokuthumela: May-05-2023