Siemens EV-8C4 Ultrasound Transducer Probe Endocavitary

Mfundo yachidziwitso

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.

Kujambula kwa Harmonic

Kujambula kwa Harmonic kumagwiritsa ntchito kufalitsa kosasinthika kwa ultrasound kudzera m'thupi. Pamene mafunde amawu otuluka ndi f 0, ma frequency a echo (chifukwa cha kusinkhasinkha kapena kubalalitsidwa) kumaphatikizapo f 0 (yotchedwa fundamental wave), 2f 0, 3F 0 ndi zina zotero The harmonic yachiwiri (2f 0) ili ndi mphamvu yaikulu .

Kujambula kwa akupanga kwamtundu (UHI) kumachokera ku chidziwitso cha thupi la munthu chonyamulidwa ndi chachiwiri cha harmonic mu echo (kulingalira kapena kubalalitsa). Kujambula kwa Harmonic popanda UCA kumatchedwa kuyerekezera kwachilengedwe kapena kujambulidwa kwa minofu. Kujambula kwa Harmonic pogwiritsa ntchito UCA (ultrasound kusiyanitsa wothandizila) kumatchedwa kusiyanitsa harmonic imaging