Aliasing


 * Reference for term: Ultrasonography - Goldberg, B. &amp; Pettersson, H.
 * Technical definition: Artefact, unique to Doppler, in which a high-frequency Doppler shift is interpreted as a lower frequency, which leads to erroneous estimations.
 * Reference for definition: Ultrasonography - Goldberg, B. &amp; Pettersson, H.
 * Comment: All the artefacts in imaging also occur in Doppler but aliasing is unique to Doppler.