![PW thiab CW hauv ultrasound yog dab tsi? PW thiab CW hauv ultrasound yog dab tsi?](https://i.answers-medical.com/preview/medical-health/14100934-what-is-pw-and-cw-in-ultrasound-j.webp)
Video: PW thiab CW hauv ultrasound yog dab tsi?
![Video: PW thiab CW hauv ultrasound yog dab tsi? Video: PW thiab CW hauv ultrasound yog dab tsi?](https://i.ytimg.com/vi/_9-40PVJzO0/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
PW stands rau pulsed yoj Doppler thiab CW rau nruam nthwv dej Doppler. Lawv yog ob daim ntawv ntawm Doppler spectral thiab muaj qhov sib txawv tseem ceeb thiab siv. Pulsed Wave Doppler (Cov PW ) PW tso cai rau peb ntsuas cov ntshav nrawm ntawm ib qho taw tes, lossis hauv lub qhov rais me me ntawm qhov chaw.
Hauv qhov no, CW ultrasound yog dab tsi?
Ultrasound kev siv duab yog ib qho ntawm kev kho mob ntau tshaj plaws hauv kev siv niaj hnub no vim nws muaj kev nyab xeeb thiab raug nqi. Raws li tawm tsam A-hom thiab B-hom ultrasound , nthwv dej tsis tu ncua ( CW ) Doppler tshuaj ultrasound pab txheeb xyuas tsis yog qhov chaw nyob ntawm cov ntaub so ntswg nkaus xwb tab sis kuj tseem ua rau cov kua thiab cov kabmob hauv lub cev.
Qhov thib ob, PW txhais li cas ntawm ultrasound? Pulsed Wave Doppler
Ib yam li ib tug yuav nug, CW Doppler yog dab tsi?
Hauv nthwv dej txuas ntxiv Doppler ( CWJ Doppler ), ultrasound nthwv dej tsis tu ncua los ntawm tus hloov pauv thiab qhov kev xav ntawm cov nthwv dej no tau tshuaj xyuas tas li (Daim duab 1).
PRF hauv ultrasound yog dab tsi?
Pulse rov ua dua zaus ( PRF ) qhia tus naj npawb ntawm ultrasound pulses tawm los ntawm lub transducer nyob rau lub sijhawm teem tseg. Nws yog feem ntau ntsuas raws li kev voj voog ib ob lossis hertz (Hz). Hauv kev kho mob ultrasound feem ntau siv ntau yam ntawm PRF sib txawv ntawm 1 thiab 10 kHz 1.
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