Mauaina o le Coil
I le MRI system, o le mauaina coil o se taua vaega, lea e aʻafia tonu le lelei o le ata. Mauaina coil e nafa ma le sailia o le MR faʻailo. O le oscillating net flux flux mai le fiafia viliina sisitema mafai ona puʻeina e le coil o loʻo faʻatupuina ai se eletise faʻaosoina e maua mai ai. Lenei o loʻo faʻamalosia ona faʻalauteleina lea, faʻanumeraina, ma faʻamamaina e aveʻese mai ai taimi ma vaega faʻamatalaga.
Ina ua mavae tausaga o unremitting sailiiliga ma galue malosi, la matou kamupani R & D 'au na atiaʻe a latou lava mauaina coil e ala i le tele o toe faia suʻega ma faʻatusatusaga, ma ana faʻailoga faʻailo ua taunuʻu i le alualu i luma tulaga.
E tele a matou ituaiga o mauaina uila e filifili mai ai, e mafai ona faʻavasegaina e tusa ma foliga vaaia, e mafai ona vaevaeina i luga, birdcage, ma transceiver coils. I se faʻaopopoga, e mafai e le tagata faʻaaoga ona filifilia le numera o auala o le coil pe a manaʻomia,
O le mea e masani ai, o fulufulu manulele e sili ona lautele faʻaaogaina, ma e mafai ona faʻaaogaina ile ulu, ua, tuli, ma isi. mo se faʻataʻitaʻiga, o le lua-auala birdcage coil e aofia ai solenoid coil ma nofoa nofoa. Tatou coils maua maualuga tulaga tulaga taua ma lelei toniga, Mafai ona faʻamalieina eseese o scanning manaʻoga, i le taimi e tasi, tatou te saunia foi tuʻusaʻoina auaunaga, tagata faʻaaoga mafai ona filifilia le tele naʻo latou.
O le pito i luga coil mafai ona faʻaaogaina e scan le tuasivi po o isi vaega o le fiafia; pe a faʻaaogaina le pito i luga coil, ona o lona matala, oe mafai ona vaʻaia le vaega o le fiafia i eseʻese tulaga.
O le transceiver coil o se fou ituaiga o coil. O lona faʻasalalauina ma le mauaina o loʻo tuʻufaʻatasia, o lea la o le tele o le coil e laʻititi nai lo masani coil. I lalo o tuutuuga lava e tasi, faʻatusatusa i le tuʻufaʻatasia o tuʻufaʻatasiga transceiver, e i ai ona laʻititi manaʻoga ile malosiʻaga ole RF power amplifier. I se faʻaopopoga, ona o lona laʻititi, e le manaʻomia tele lapoʻa maneta lapoʻa, ma e mafai ona faʻaaogaina mo laʻititi polokalama poʻo isi faiga ma le manaʻomia avanoa avanoa.
1, Ituaiga: fola luga, voluma coil, transmitter-taliaina coil tuufaatasia
2, Faʻafia: faʻapitoa e tusa ma tagata faʻatau
3 、 Auala: tasi ala, lua auala, fa ala, 8 ala, 16 ala, etc.
4, Avanoa ulufale: 50 ohms
5 、Tuʻua: sili atu ile 20dB
6, Muai faʻatele mauaina: 30dB
7, Noise numera: 0.5-0.7
8 、 Galulue bandwidth: 1MHz,