Vhura MRI Scanners Bvisa Claustrophobic Kutya
Maonero: 0 Munyori: Saiti Edhita Nguva Yekuburitsa: 2023-08-09 Mabviro: Site
Bvunza
Magnetic resonance imaging (MRI) ndiyo imwe yenzira dzinokosha dzekurapa dzekufungidzira nhasi.Inoshandisa magineti akasimba uye radiofrequency pulses kuti iwane-yakakwirira-resolution cross-sectional mifananidzo yematishu evanhu, ichiita basa rakakosha mukuongorora zvirwere zvakawanda.Nekudaro, echinyakare maMRI scanner ane yakavharirwa tubular chimiro, ichimanikidza varwere kuti varare vachiri mugero rakamanikana panguva yekuongororwa.Izvi zvinounza kushushikana kukuru kwepfungwa, kunyanya kuvana, vakuru, uye varwere vane claustrophobia, sezvo kurara mukati memugero wakavharirwa kunogona kusagadzikana zvakanyanya.Uyezve, ruzha rukuru runogadzirwa nguva dzose panguva yeMRI scans, ichiwedzera kuwedzera kune kusagadzikana kwemurwere.Vhura maMRI scanners akagadzirwa kuti avandudze zvakanyanya ruzivo rwemurwere.
Chinhu chikuru cheMRI yakavhurika ndeye magineti ayo akaumbwa neC-shaped kana O-anogadzira mukana wakavhurika pamativi ese ebhore.Varwere vanoiswa panzvimbo yakazaruka kuitira kuti vaone nharaunda yekunze pane kuvharirwa munzvimbo yakamanikana.Izvi zvinoderedza zvakanyanya kushushikana kwemurwere uye manzwiro ekuvharirwa.Pamusoro pezvo, MRI yakavhurika inogadzira chete kutenderedza 70 decibels eruzha, kuderedzwa kwe40% kubva ku110 decibels echinyakare akavharirwa MRI scanners, zvichibvumira kuti iwedzere kugadzikana maitiro ekuvheneka.
C-yakaumbwa
O-shaped
Panyaya yezvikamu zvehurongwa, MRI yakavhurika inochengeta mativi epakati eyakajairwa MRI scanner, kusanganisira iyo magineti huru inoburitsa yakasimba static magineti, gradient makoiri anoburitsa gradient minda, uye RF coils yekunakidzwa uye kuona chiratidzo.Simba remumunda remagineti makuru muMRI yakazaruka rinogona kuramba richisvika 0.2 kusvika ku3 Tesla, pairi neMRI yakajairika.MRI yakavhurika inosanganisirawo mamwe magadzirirwo ekutsigira murwere uye nzira dzekumira kuti dzigadzirire yakavhurika gadziriso uye murwere anomisa zvinodiwa.Pakazara, uchivandudza ruzivo rwemurwere, MRI yakavhurika inochengeta misimboti yakakosha yemagnetic resonance imaging uye inogona kuramba ichipa mifananidzo yemhando yepamusoro yematishu evanhu.
Kana ichienzaniswa neyechinyakare yakavharirwa MRI, yakavhurika MRI ine zvinotevera zvakakosha zvakanaka:
1. Zvinonyanya kuderedza kutya kweclaustrophobic.Iyo yakavhurika dhizaini inoita kuti varwere vasanzwe vakavharirwa mukati memugero wakamanikana, ichipa nharaunda inodzikama kunyanya kuvana, vakweguru, kana claustrophobic varwere.Izvi zvinovandudza kutevedza uye zvinobvumira kuwanikwa kwemhando yepamusoro scans.
2. Ruzha rwakaderedzwa zvakanyanya, zvichiita kuti pave neakanyanya kugadzikana scan.Vhura MRI ruzha mazinga anenge 40% yakaderera pane yakavharirwa masisitimu.Ruzha rwakaderedzwa runoderedza kushushikana kwemurwere, zvichibvumira nguva yakareba yekuongorora uye yakawanda yekufungidzira yekutora.
3. Zvimwe zvinoshanduka uye zvinowanikwa kune varwere vose.Kupinda kwakavhurika uye kuderedzwa ruzha kunoita kuti kuongorora kuve nyore kune vashandisi vewiricheya, varwere vestretcher, kana avo vane matambudziko ekufamba.Vhura maMRI scanners anogona kuongorora varwere zvakananga pasina kuchinjika mumuviri uye mupfungwa.
4. Inogonesa kupindira maapplication.Iyo yakavhurika dhizaini inopa nyore kuwana kune varwere panguva yekuongororwa, kufambisa MRI-inotungamirwa nzira dzekupindira.Vanachiremba vanogona kuvhiya varwere-nguva chaiyo vachiramba vachifungidzira nzvimbo yekurapwa.
Pane zvimwe zvipimo zveMRI yakavhurika zvichienzaniswa neakavharirwa masisitimu:
1. Chimiro chemufananidzo chinogona kunge chakaderera zvishoma, kunyanya mukusiyana kwetishu dzakapfava uye kugadzirisa.Iyo yakavhurika dhizaini inoreva kuti iyo magineti ine inhomogeneous kupfuura echinyakare akavharirwa masilinda, zvichitungamira kune yakaderedzwa gradient mutsara uye yakaderera yekupedzisira mufananidzo kugadziriswa.Izvi zvinonyanya kukosha pane isina kusimba yakaderera-munda yakavhurika MRI scanners.Yakasimba 1.5T kana 3T yakavhurika scanner inogona kutsiva inhomogeneity yemunda ine shimming yepamusoro uye pulse sequence dhizaini.Asi ne theoretically, masilinda akavharirwa anogara achigonesa mamwe akakwenenzverwa uye homogeneous minda.
2. Kuderera kwekufungidzira kuita kwevarwere vakafuta nekuda kwekuwandisa inhomogeneous magineti.Varwere vakafutisa vane vhoriyamu yakakura yemuviri, uye iyo yakavhurika dhizaini inonetseka kuchengetedza homogeneous magineti yekuvhara pamusoro pavo.Traditional yakavharirwa MRI scanners inongoda optimize munda homogeneity pamusoro diki cylindrical tunnel nzvimbo, kuwana migumisiro iri nani kuvarwere vakuru.Asi vatengesi veMRI vakavhurika vari kushanda pamhinduro dzakagadziridzwa senge kuvhurika kwevarwere kwakakura uye simba remunda rakasimba kugadzirisa izvi.
3. Chimiro chakaoma chinotungamira kumutengo wepamusoro wekutenga nekugadzirisa.Iyo yakavhurika dhizaini inoda yakanyanya kuomarara magineti uye gradient coil geometries, pamwe neakajairwa murwere kubata masisitimu.Uku kuomarara kwekuvaka kunodudzira kumutengo wepamusoro wekutanga uchienzaniswa neakavharirwa magineti ecylindrical esimba remunda rakaenzana.Uyezve, chimiro chisina kujairika chemagetsi akavhurika eMRI chinoita kuti zviome kuisa mukati mezvivakwa zvechipatara zvakagadzirirwa zvakavharirwa MRI bores.Kuchengetedza kwenguva refu uye helium refills zvakare inodhura nekuda kwetsika yemaitiro akavhurika MRI masisitimu.Asi kune varwere vanobatsirwa zvakanyanya neyakavhurika dhizaini, idzi mari dzekuwedzera dzinogona kuve dzakakodzera.
Muchidimbu, magadzirirwo akazaruka eMRI scanners anokunda kusasimba kwechinyakare akavharirwa MR masisitimu uye anowedzera zvakanyanya kunyaradza kwevarwere uye kugamuchirwa.Ivo vanopa hushamwari scanning nharaunda inobatsira varwere vazhinji.Nekuenderera mberi kuenderera mberi, MRI yakazaruka ichawana kushandiswa kwekiriniki kwakakura, kunyanya kune vanonetsekana, vana, vakwegura, uye varwere vasingafambi.
