Aloka UST-5546 Linear Array Transducer 10Mhz High Frequency Linear Probe

Kujambula kwamitundu

Kujambula kwamtundu wamtundu ndi njira yowonjezera yaukadaulo wa Doppler ultrasound. Munjira yofanana ndi duplex ultrasound, imagwiritsa ntchito utoto kuwunikira komwe magazi akuyenda. Ziwiya zomwe magazi akuyenda zimakhala zofiira zofiira kuti ziziyenda mbali imodzi ndi buluu kuti ziziyenda mumzake, ndi sikelo yamtundu yomwe imasonyeza kuthamanga kwa magazi. kuwonetsa zowoneka bwino komwe akupita, liwiro, kuchuluka kwa magazi, komanso ngati pali vuto lakuyenda kwa magazi ndi njira zachilendo. Kuthamanga kwa magazi kumatanthawuza kuwonetsetsa pafupipafupi, komwe kumayimiridwa ndi matalikidwe amtengo mu spectral Doppler. Kuthamanga kwa magazi kumathamanga, ndipo matalikidwe pamtundu wa spectrum ndi apamwamba; liwiro la magazi ndi pang'onopang'ono, ndipo matalikidwe pa sipekitiramu pamapindikira ndi otsika, kotero matalikidwe akhoza molondola kuwerengera liwiro la magazi. Zithunzi zamtundu wa Doppler zimawonetsedwa ndi kuwala kosiyanasiyana.

Kujambula kwa Doppler yamtundu

Mtundu wa Doppler flow imaging system utha kuwonetsa nthawi imodzi chithunzi cha mtundu wa B ndi data yamagazi a Doppler (mayendedwe amagazi, kuthamanga kwakuyenda, kubalalitsidwa) kwamachitidwe apawiri a ultrasound. Colour power angio(CPA) idazindikira mphamvu yakumbuyo ya ma cell amagazi mukuyenda kwa magazi, zomwe sizimasiyanitsa komwe kumayenda, komanso zinalibe chochita ndi ngodya θ (ngodya yomwe ili pakati pa komwe kumamveka phokoso ndi komwe magazi amayendera. ). CPA imatha kupititsa patsogolo kuzindikira kwa kuthamanga kwa magazi, makamaka koyenera kuwonetsa kuthamanga kwa magazi m'mitsempha yaying'ono, koma osawonetsa komwe kumayenda magazi.
 

Akafukufuku wina

Mfundo ntchito zozungulira mphete gulu zazikulu segmented molunjika njira mu makina gawo-jambulani akupanga matenda zida ndi chimodzimodzi ndi liniya gulu zazikulu molunjika. Kugwiritsa ntchito kuchedwa koyenera ku siginecha yamagetsi ya chinthu chilichonse kumatha kuyang'ana mtunda uliwonse pakatikati pa axis, yomwe ili yofanana ndi ntchito ya ma lens acoustic, motero imagwira ntchito ngati "lens yoyang'ana pamagetsi".