TY - GEN
T1 - Transverse Spectral Analysis in Stenosis Diagnosis Using Transversely Oscillating Acoustic Field
AU - Makouei, Fatemeh
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/11
Y1 - 2019/11
N2 - Accurate estimation of maximum velocities in Doppler blood flow spectrograms is vital in diagnosis of cardiovascular anomalies such as stenosis. However, obtaining accurate maximum velocity is not straightforward due to intrinsic spectral broadening and variance in the power spectrum estimate. Therefore, employment of Doppler indices such as pulsatility index is commonplace. Moreover, the results attained by conventional blood spectrogram estimators fail when beam to flow angle is near to 90°. In this work, an approach for estimation of pulsatility index for a fully transverse blood flow is presented. The method has been validated using simulated Doppler signal with scatterers possessing the pulsating flow of femoral artery in Womersley-Evan's model. By investigation of three scenarios of a normal vessel, and vessel with 20% and 40% stenosis, the possibility of stenosis diagnosis is discussed.
AB - Accurate estimation of maximum velocities in Doppler blood flow spectrograms is vital in diagnosis of cardiovascular anomalies such as stenosis. However, obtaining accurate maximum velocity is not straightforward due to intrinsic spectral broadening and variance in the power spectrum estimate. Therefore, employment of Doppler indices such as pulsatility index is commonplace. Moreover, the results attained by conventional blood spectrogram estimators fail when beam to flow angle is near to 90°. In this work, an approach for estimation of pulsatility index for a fully transverse blood flow is presented. The method has been validated using simulated Doppler signal with scatterers possessing the pulsating flow of femoral artery in Womersley-Evan's model. By investigation of three scenarios of a normal vessel, and vessel with 20% and 40% stenosis, the possibility of stenosis diagnosis is discussed.
KW - Pulsatility Index
KW - Spectral Transverse Velocity Estimation
KW - Transverse Oscillations
KW - Vessel Stenosis
UR - http://www.scopus.com/inward/record.url?scp=85083361222&partnerID=8YFLogxK
U2 - 10.1109/ICBME49163.2019.9030402
DO - 10.1109/ICBME49163.2019.9030402
M3 - Article in proceedings
AN - SCOPUS:85083361222
T3 - 2019 26th National and 4th International Iranian Conference on Biomedical Engineering, ICBME 2019
SP - 11
EP - 14
BT - 2019 26th National and 4th International Iranian Conference on Biomedical Engineering, ICBME 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 26th National and 4th International Iranian Conference on Biomedical Engineering, ICBME 2019
Y2 - 27 November 2019 through 28 November 2019
ER -