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

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

研究成果: Conference contribution

抄録

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.

本文言語English
ホスト出版物のタイトルProceedings of the International Conference and School on Physics in Medicine and Biosystem, ICSPMB 2020
ホスト出版物のサブタイトルPhysics Contribution in Medicine and Biomedical Applications
編集者Lukmanda Evan Lubis, Nur Aisyah Nuzulia, Nur Rahmah Hidayati
出版社American Institute of Physics Inc.
ISBN(電子版)9780735440876
DOI
出版ステータスPublished - 2021 3 29
イベント2020 International Conference and School on Physics in Medicine and Biosystem: Physics Contribution in Medicine and Biomedical Applications, ICSPMB 2020 - Depok, Virtual, Indonesia
継続期間: 2020 11 62020 11 8

出版物シリーズ

名前AIP Conference Proceedings
2346
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Conference

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

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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