Gradient Coil don MRI
A cikin tsarin sikanin MRI, aikin coil ɗin gradient galibi don gane ɓoye bayanan sarari. Lokacin da ake duba hoton, maɗaɗɗen nau'ikan nau'ikan nau'ikan nau'ikan nau'ikan X, Y da Z suna aiki tare don aiwatar da zaɓin yanki, rikodin mitar da rikodin lokaci bi da bi. Lokacin da halin yanzu ya wuce ta waɗannan coils an ƙirƙiri filin maganadisu na biyu. Wannan filin gradient yana ɗan karkatar da babban filin maganadisu a cikin sifar da ake iya faɗi, yana haifar da mitar protons don bambanta a matsayin aikin matsayi. Babban aikin gradients, don haka, shine ba da izinin ɓoye sarari na siginar MR. Har ila yau, coils na gradient suna da mahimmanci ga fasahohin "physiologic" iri-iri, kamar MR angiography, yadawa, da kuma hoton perfusion.
A lokaci guda, na'urar gradient suma suna da alhakin aikin shimming da anti-eddy current
Kamfaninmu yana ba da coils na gradient mai lebur tare da kyakkyawan aiki, wanda zai iya biyan bukatun amfani.
Daga mahangar tsarin, wannan madaidaicin fale-falen yana da coils na hanyoyi uku na X, Y, Z, mai sauƙin haɗawa, kuma ana iya sanye shi da tsarin sanyaya ruwa, wanda zai iya kwantar da na'urar gradient yadda ya kamata tare da yin hoto. karin kwanciyar hankali;
Hakanan za'a iya ƙirƙira shi azaman coil ɗin gradient mai kariya da gaske don ƙara rage ɓacin rai daga tushen. Domin hanya mafi inganci don sarrafa ɓacin rai shine a hana haɓakar ruɗaɗɗen igiyoyin ruwa da farko. Wannan shine dalili don haɓaka garkuwa mai aiki (garkuwar kai) gradients; Ana amfani da halin yanzu a cikin coil ɗin garkuwa don gudu zuwa akasin shugabanci zuwa na'urar gradient na hoto don rage igiyoyin ruwa. Gilashin gradient da aka yi ta wannan hanyar abin dogaro ne kuma mai dorewa.
1. Ƙarfin gradient: 25mT/m
2. Madaidaicin layi: <5%
3. Lokacin tashi: ≥0.3ms
4. Canjin canjin yanayi: ≥80mT/m/ms
Ana iya daidaita girman girman bisa ga bukatun abokin ciniki