Ubushakashatsi bwashyigikiwe na gahunda ya perezida yikigega cya siyansi yuburusiya kandi gisohoka muri rukuruzi ya rukuruzi ya magnetike mubuvuzi. Umwe mu banyeshuri batangayemukira ati: "Ku isi yose, kuvumbura kwacu bizemerera gutsimbataza inkombe y'icyiciro MRI no kwihutisha intangiriro y'imyitozo myinshi." Agace ka Scan, kandi kandi kugenzura neza inzira ubwayo. Ibisobanuro by'ingaruka byanyuma birakoroha kandi byihuse. "
Magnetic Resonance Topografiya - uburyo bwo mumiti ya none ni ngombwa bihenze. Iragufasha gucukumbura ingingo zimbere zumuntu udatera (nta autopsiene itaziguye) kandi mubyukuri ntabwo ifite ingaruka za ionizing ugereranije na x-ray tomography. Ariko, ibiciro bimwe bifite agaciro katarenze miliyoni 15 (kutabara ikiguzi cya serivisi) kandi gifite aho bihurira hamwe nububiko buto.
Mugihe kimwe, ubuziranenge kandi bwukuri byamashusho akenshi bisiga byinshi byifuzwa. Mubikorwa bya MRInical MRI, tomographs hamwe nurwego rwigice cyigice na tesla eshatu zikoreshwa. Ariko, kubikorwa bifitanye isano nubushakashatsi aho bisabwa kugirango ubone igisubizo ntarengwa, tomografi hamwe murwego rwo murwego rwa karindwi cyangwa benshi bakoreshwa.
Ihame ryo gukora rya MRI rishingiye ku mikoranire ya radiyo ya maguke ya magnetic hamwe na hydrogen nuclei. Muri icyo gihe, kubera ko nuclei ya atome ya hydrogen mu mubiri wacu harimo magnets nto, ireba imirongo yo mu murima ihindukirira icyerekezo kimwe.
Nibyo, iki kibazo ntangarugero kidafite imbaraga, kandi atome asubizwa igihugu cyabo "gisanzwe" cyane, akimara kwerekana imbaraga zirenze. Ni ukurikije umubare wacyo umuntu ashobora kumva niba hari atome nyinshi yibintu runaka muburyo bukwiye bwumuntu. Rero, ibikorwa by'ubwonko bikorwa mbere - nyuma ya byose, amaraso menshi (bityo rero amazi afite atome ya hydrogen) ahantu runaka, ibikorwa byayo. Birashoboka kandi kumenya ibibyimba mubyiciro byambere, kubera ko selile zanduye zikora amazi menshi kurenza ibisanzwe.
Imirima ya magnetiki yabonye ukoresheje inararibonye ya prosed yigice / © avdievich et al. / Resonance ya magnetic mubuvuzi, 2021
Kugirango ukore radiyo umurima wa rukuruzi muri tomographs hamwe nurwego rwo murwego, ibirenga tesla birindwi bikoresha icyiciro cya Antenna. Bafite inyungu zingenzi: Emerera guhindura uburyo bwo guhagarika ingingo yubushakashatsi, udakomeje icyarimwe akadomo ubwako. Dipole Antennas irashobora gukoreshwa nkibintu bya gari. Ariko, hashobora kubaho isano iri hagati ya dipoles, igabanya imikorere ya coil yinshi.
Kurinda iyi, dipoles ya pasiporo irakoreshwa. Mubisanzwe biri mubihe bisa, kandi bikemura ikibazo. Ariko ubu buryo bugomba gukoreshwa no kwitonda, kubera ko dipoles nini cyane ikorana numurima, yerekana ko homogeneity yayo, amaherezo iganisha ku kugabanuka kwishusho ya nyuma, bivuze ko ibisubizo byibizamini byose byubuvuzi.
Abahanga bo muri kaminuza ya ITMo bahinduye geometrie ya dipoles, zishyira dipoles ya pasiporo perpendicular kugirango ikore. Kandi, kugirango hamenyekane amashanyarazi akomeye hagati ya diplesi yaba fiziki, ikintu gisaruye cyakozwe ku mpera ya Grille. Mbere yo gukomeza gukora antna nshya, abashakashatsi bakoze imideli, byatumye bishoboka kunoza imiterere. Imikorere yayo yageragejwe imibare kandi ikoresheje kwigana mudasobwa. Byongeye kandi, abahanga mu bya fiziki bakoze ubushakashatsi bakora ubwonko bw'umugabo mukuru MRI. Sheki yerekana ko ikibanza nk'iki gikemura ikibazo kijyanye n'umuhigo wo mu murima, kandi umubano uri hagati ya dipoles ntizigaragara.
Inkomoko: Ubumenyi bwambaye ubusa