De-aliasing method for Doppler velocity data of echocardiography in echodynamography

S. Oktamuliani, D. Fitriyani, R. Adrial, E. Sparzinanda, Y. Saijo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The de-aliasing method is developed for Doppler velocity data of echocardiography. Physiological flow velocities exceeded low and high Nyquist velocity, resulting in aliasing. Aliasing occurs when the sampled signal is less than twice the highest frequency in the signal. The system does not take enough samples to ascertain which direction the flow occurs. Therefore, the scale and direction are displayed incorrectly in echocardiography. Echodynamography, which came as an idea of the limited information obtained from color Doppler echocardiography, is a method of estimating and visualizing three-dimensional (3D) blood flow velocity vectors two-dimensional (2D) observations plane by applying flow dynamics theory to the Doppler velocity in the heart. Color Doppler echocardiography is the premiere modality to analyze blood flow in clinical practice. The de-aliasing method is applied in Echodynamography. De-aliasing extends the Nyquist velocity range to complete ambiguous estimates of blood flow direction caused by aliasing. A sufficient velocity data de-aliasing scheme must be applied to recover the actual signal from the raw measurement. The method is tested with color Doppler echocardiography. The results show that the analytical study demonstrated that the de-aliasing method could efficiently and effectively reconstruct color Doppler velocity at the blood data point. Future discussion of the method limitations and possible improvements are needed.

Original languageEnglish
Title of host publicationProceedings of the International Conference and School on Physics in Medicine and Biosystem, ICSPMB 2020
Subtitle of host publicationPhysics Contribution in Medicine and Biomedical Applications
EditorsLukmanda Evan Lubis, Nur Aisyah Nuzulia, Nur Rahmah Hidayati
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735440876
DOIs
Publication statusPublished - 2021 Mar 29
Event2020 International Conference and School on Physics in Medicine and Biosystem: Physics Contribution in Medicine and Biomedical Applications, ICSPMB 2020 - Depok, Virtual, Indonesia
Duration: 2020 Nov 62020 Nov 8

Publication series

NameAIP Conference Proceedings
Volume2346
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference2020 International Conference and School on Physics in Medicine and Biosystem: Physics Contribution in Medicine and Biomedical Applications, ICSPMB 2020
CountryIndonesia
CityDepok, Virtual
Period20/11/620/11/8

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'De-aliasing method for Doppler velocity data of echocardiography in echodynamography'. Together they form a unique fingerprint.

Cite this