Umbala weDoppler VS iDoppler yaMandla

 

Yintoni iDoppler yoMbala?

 

Olu hlobo lweDoppler lutshintsha amaza omsindo abe yimibala eyahlukeneyo ukuze abonise isantya kunye nomkhombandlela wokuhamba kwegazi ngexesha lokwenyani.

Ingasetyenziselwa ukuqikelela ukuhamba kwegazi kwimithambo yakho yegazi ngokubetha amaza esandi esikwizinga eliphezulu (i-ultrasound) ephuma kwiiseli ezibomvu zegazi.I-ultrasound eqhelekileyo isebenzisa amaza omsindo ukuvelisa imifanekiso, kodwa ayikwazi ukubonisa ukuhamba kwegazi.

Yintoni iPower Doppler?

I-Power Doppler isekwe ekubhaqweni kwemiqondiso yokuhamba kancinci kwegazi, isusa isiginali ye-frequency shift, kwaye isebenzisa umqondiso we-amplitude owenziwe ngamandla asasaziweyo eeseli ezibomvu zegazi ukubonisa ukuhanjiswa kwemithambo yegazi emincinci ngovakalelo ngakumbi.

Nguwuphi umahluko phakathi kweDoppler yoMbala kunye neDoppler yaMandla?

Umbala weDoppler uguqula imilinganiselo yokuqukuqela kwegazi ibe yimibala eyahlukeneyo ukubonisa isantya kunye necala lokuhamba kwegazi kwinqanawa.

I-Power Doppler ibukhali ngakumbi kune-Doppler yombala ekuboneni ukuhamba kwegazi, nangona ingaboneleli ngolwazi malunga necala lokuhamba kwegazi.

 

I-Dawei High-end color ultrasonica izixhobo zokuxilonga,DW-T8, kungekhona kuphela i-Power Doppler Imaging (PDI), kodwa i-Directional Power Doppler Imaging (DPDI).