Magnetic resonance imaging, inowanzonzi MRI, inzira isingapindike yekufungidzira yekufungidzira inowanzoshandiswa nenyanzvi dzehutano kuona zvimiro zvemukati zvemuviri.MRI inoshandisa simba remagineti uye masaisai eredhiyo kugadzira mifananidzo yakadzama yenhengo dzemuviri, matishu, uye mapfupa.
Nezvemuchina weMRI, mubvunzo unowanzo kumuka mupfungwa dzevanhu ndewekuti nei kamuri reMRI richifanira kunge rakaputirwa nemhangura?Mhinduro kumubvunzo uyu iri mumitemo ye electromagnetism.
Kana muchina weMRI wabatidzwa, unoburitsa simba remagineti iro rinogona kukanganisa midziyo yemagetsi iri pedyo uye masisitimu.Kuvapo kwemagineti kunogona kukanganisa zvimwe zvemagetsi zvakaita semakomputa, nharembozha, uye michina yekurapa, uye zvinogona kutokanganisa mashandiro epacemaker.
Kuti udzivirire midziyo iyi uye kuchengetedza kuvimbika kwemidziyo yekufungidzira, kamuri yeMRI inotarirwafoil yemhangura, iyo inoshanda sechipingamupinyi kune magnetic field.Mhangura inofambisa zvakanyanya, zvinoreva kuti inotora uye inoparadzira simba remagetsi uye inoshanda pakuratidzira kana kudzivirira magineti.
Chigadziko chemhangura pamwe chete nefuro rinodzivirira uye plywood inoumba kage yeFaraday yakatenderedza muchina weMRI.Kage yeFaraday inzvimbo yakavharirwa kuvharidzira minda yemagetsi uye kudzivirira kukanganiswa nemidziyo yemagetsi.Iyo Cage inoshanda nekugovera chaji yemagetsi zvakaenzana pamusoro pecheji, inonyatso kudzikamisa chero ekunze minda yemagetsi.
Copper foilhaishandiswe chete kudzivirira, asiwo pakuisa pasi.Michina yeMRI inoda kuti mafambiro akakwirira apfuure kuburikidza nemakoiri anogadzira magineti.Aya mafungu anogona kukonzera kuvakwa kwemagetsi akasimba anogona kukuvadza michina uye kunyange kuve nenjodzi kuvarwere.Foil yemhangura inoiswa pamadziro uye pasi pekamuri yeMRI kuti ipe nzira yekuchaja iyi kuti ibudise zvakachengeteka pasi.
Pamusoro pezvo, kushandisa mhangura sechinhu chekudzivirira kunopa zvakati wandei zvakanakira pamusoro pechinyakare nzira dzekudzivirira.Kusiyana nemutobvu, mhangura inoumbika zvakanyanya uye inogona kugadzirwa zviri nyore kuita maumbirwo nemasaizi akasiyana siyana kuti isangane nezvinodiwa zvekamuri yeMRI.Iyo zvakare inodhura-inoshanda uye ine ushamwari kwezvakatipoteredza kupfuura mutobvu.
Mukupedzisa, makamuri eMRI akaputirwa nemhangura foil nokuda kwechikonzero chakanaka.The shielding properties offoil yemhangurachengetedza michina yekufungidzira kubva kunze kwemagetsi kukanganiswa uku uchichengetedza murwere nevashandi kuchengetedza.Iyo yemhangura yemhangura inosanganiswa nezvimwe zvinhu kuti zvigadzire Faraday cage ine magnetic field inogadzirwa neMRI machine nenzira yakachengeteka uye inodzorwa.Copper yakanaka conductor yemagetsi, uye kushandisafoil yemhangurainovimbisa kuti muchina weMRI wakadzikwa zvakanaka.Nekuda kweizvozvo, kushandiswa kwemhangura foil muMRI shielding yave yakajairika tsika muindasitiri yekurapa, uye nechikonzero chakanaka.
Nguva yekutumira: May-05-2023