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Gradient Coil mo le MRI

Faʻamatalaga puʻupuʻu:

O le tele e mafai ona faʻapitoa e tusa ma manaoga o tagata faʻatau.


  • Malosiaga agavaʻa malosi:

    25mT / m

  • Laʻasaga linearity:

    < 5%

  • Tulai taimi:

    ≥0.3ms

  • Fesuiaʻi fua faatatau:

    ≥80mT / m / ms

  • Oloa Faʻamatalaga

    Pine o oloa

    Faatomuaga Oloa

    I le MRI scan system, o le gaioiga o le gradient coil e tele lava ina ia iloaina spatial encoding. Pe a suʻesuʻeina le ata, o le X, Y, ma le Z tolu-gradient coil galulue faʻatasi e faʻataʻitaʻie fasi fasi, faʻatulagaina o taimi ma faʻavaitaimi faʻavasega. A pasi le taimi nei i totonu o nei uila, e faʻatupuina le faʻaluaina o maneta. O lenei gradient fanua teisi faʻaletonu le autu maneta autu i se mamanu vaʻaiaina, mafua ai le resonance taimi o protons e fesuisuiaʻi i totonu o se gaioiga o tulaga. O le aoga muamua a gradients, o le mea lea, o le faʻatagaina o le vateatea faʻavasegaina o le MR faʻailo. Gradient coils e taua foi mo le lautele o ituaiga "physiologic" metotia, pei o MR angiography, diffusion, ma perfusion ata.

    I le taimi lava e tasi, o le gradient coil e tali atu foi mo le gaioiga o le susulu ma le anti-eddy o loʻo i ai nei

    O la matou kamupani faʻaavanoaina ipu mafolafola gradient coil ma lelei faʻagaioiga, lea e mafai ona faʻamalieina ai manaʻoga o le faʻaaogaina.

    Mai se vaaiga faʻavae o le vaaiga, lenei mafolafola vaega vaega X, Y, Z tolu-ala gradient coil, faigofie e fesoʻotaʻi, ma e mafai ona faʻaauupegaina i se vai mauaina vai faiga, lea e mafai ona faʻamaluluina lelei le gradient coil ma faia le ata. sili atu fale o manu;

    E mafai foi ona fuafuaina o se puipuia puipuia gradient coil e atili faʻaititia ai le eddy āu mai le mafuaʻaga. Aua o le auala sili ona lelei e faʻatonutonu ai āu tafe o le puipuia muamua o le gaosiga o vaitafe. Lenei o le faʻaosofia e atiaʻe toaaga puipuia (lava puipuia) gradients; o le taimi nei i le coil puipuia o loʻo faʻaaogaina e tamoʻe i le isi itu i le ata faʻafanua coil e faʻaititia ai gaʻalu āu. O le gradient coil faia i lenei auala e faʻatuatuaina ma anagata.

    Tapulaʻa faʻatekonolosi

    1. Malosiaga gradient: 25mT / m

    2. Gradient laina laina: <5%

    3. Tulai taimi: ≥0.3ms

    4. Fesuiaiga fua faatatau: ≥80mT / m / ms

    O le tele e mafai ona faʻapitoa e tusa ma manaoga o tagata faʻatau


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  • Fesootaiga Oloa