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On the Aliasing Problem in Pulsed Doppler Cardiac Studies
Author(s) -
Bom Klaas,
De Boo Job,
Rijsterborgh Hans
Publication year - 1984
Publication title -
journal of clinical ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.272
H-Index - 61
eISSN - 1097-0096
pISSN - 0091-2751
DOI - 10.1002/jcu.1870120906
Subject(s) - aliasing , doppler effect , medicine , cardiology , doppler echocardiography , radiology , computer science , filter (signal processing) , physics , computer vision , astronomy , blood pressure , diastole
Abstract : In pulsed Doppler echocardiography the maximum measurable velocity is limited due to the aliasing phenomenon. Particularly in cardiac echo studies in adults, aliasing may occur frequently. The principle of and the parameters that influence aliasing will be explained. The importance of aliasing is demonstrated in examples of tricuspid, mitral, and aortic Doppler echocardiographic studies in adults. Ways to reduce or avoid aliasing are presented. Indexing Words : Doppler echocardiography Aliasing · Zero shift · Extended range · Secondary sample volumes.