Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2020 Apr;20(4):112-113.
doi: 10.1016/j.bjae.2020.01.003. Epub 2020 Feb 20.

Essential notes on the physics of Doppler ultrasound

P Magee  1
Affiliations

Essential notes on the physics of Doppler ultrasound

P Magee. BJA Educ. 2020 Apr.
No abstract available

PubMed Disclaimer

Conflict of interest statement

The author declares that they have no conflict of interest.

Figures

Fig. 1
Fig. 1
(A) Generation and transmission of an ultrasound pressure wave from a piezoelectric crystal using an alternating electrical signal input. (B) Reception and detection of a reflected ultrasound pressure wave by a piezoelectric crystal, which generates an electrical signal output (Supplementary material).
Fig. 2
Fig. 2
(A) When a transmitted (TX) wave is reflected off a stationary object, the reflected wave is received (RX) at the same frequency as the transmitted wave. (B) When the reflecting object is moving towards the transmitted wave, the frequency of the reflected wave increases; this is the Doppler effect (Supplementary material).
Fig. 3
Fig. 3
Doppler frequency shift spectrum for peak and mean blood velocity spectra; the density of grey dots represents the power spectrum within frequency bandwidths (Supplementary material).
See this image and copyright information in PMC

References

    1. The Physics, Clinical Measurement and Equipment of Anaesthetic Practice. Patrick Magee and Mark Tooley, OUP; 2011. Ch.10.