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Adaptive spectral Doppler estimation

Gran, Fredrik; Jakobsson, Andreas LU and Jensen, Jörgen (2009) In IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 56(4). p.700-714
Abstract
In this paper, 2 adaptive spectral estimation techniques are analyzed for spectral Doppler ultrasound. The purpose is to minimize the observation window needed to estimate the spectrogram to provide a better temporal resolution and gain more flexibility when designing the data acquisition sequence. The methods can also provide better quality of the estimated power spectral density (PSD) of the blood signal. Adaptive spectral estimation techniques are known to provide good spectral resolution and contrast even when the observation window is very short. The 2 adaptive techniques are tested and compared with the averaged periodogram (Welch's method). The blood power spectral capon (BPC) method is based on a standard minimum variance technique... (More)
In this paper, 2 adaptive spectral estimation techniques are analyzed for spectral Doppler ultrasound. The purpose is to minimize the observation window needed to estimate the spectrogram to provide a better temporal resolution and gain more flexibility when designing the data acquisition sequence. The methods can also provide better quality of the estimated power spectral density (PSD) of the blood signal. Adaptive spectral estimation techniques are known to provide good spectral resolution and contrast even when the observation window is very short. The 2 adaptive techniques are tested and compared with the averaged periodogram (Welch's method). The blood power spectral capon (BPC) method is based on a standard minimum variance technique adapted to account for both averaging over slow-time and depth. The blood amplitude and phase estimation technique (BAPES) is based on finding a set of matched filters (one for each velocity component of interest) and filtering the blood process over slow-time and averaging over depth to find the PSD. The methods are tested using various experiments and simulations. First, controlled flow-rig experiments with steady laminar flow are carried out. Simulations in Field II for pulsating flow resembling the femoral artery are also analyzed. The simulations are followed by in vivo measurement on the common carotid artery. In all simulations and experiments it was concluded that the adaptive methods display superior performance for short observation windows compared with the averaged periodogram. Computational costs and implementation details are also discussed. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
common carotid artery, adaptive spectral estimation, spectral Doppler ultrasound, temporal resolution, data acquisition sequence, power spectral density, blood power spectral capon method, matched filters, blood amplitude and phase estimation technique, steady laminar flow, pulsating flow, femoral artery
in
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
volume
56
issue
4
pages
700 - 714
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000264246400003
  • scopus:65349116619
ISSN
0885-3010
DOI
10.1109/TUFFC.2009.1093
language
English
LU publication?
yes
id
9ec4b4cc-e929-4823-952b-3c8b2c08866f (old id 1397931)
alternative location
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4815300
date added to LUP
2009-05-20 14:26:36
date last changed
2017-05-21 03:37:55
@article{9ec4b4cc-e929-4823-952b-3c8b2c08866f,
  abstract     = {In this paper, 2 adaptive spectral estimation techniques are analyzed for spectral Doppler ultrasound. The purpose is to minimize the observation window needed to estimate the spectrogram to provide a better temporal resolution and gain more flexibility when designing the data acquisition sequence. The methods can also provide better quality of the estimated power spectral density (PSD) of the blood signal. Adaptive spectral estimation techniques are known to provide good spectral resolution and contrast even when the observation window is very short. The 2 adaptive techniques are tested and compared with the averaged periodogram (Welch's method). The blood power spectral capon (BPC) method is based on a standard minimum variance technique adapted to account for both averaging over slow-time and depth. The blood amplitude and phase estimation technique (BAPES) is based on finding a set of matched filters (one for each velocity component of interest) and filtering the blood process over slow-time and averaging over depth to find the PSD. The methods are tested using various experiments and simulations. First, controlled flow-rig experiments with steady laminar flow are carried out. Simulations in Field II for pulsating flow resembling the femoral artery are also analyzed. The simulations are followed by in vivo measurement on the common carotid artery. In all simulations and experiments it was concluded that the adaptive methods display superior performance for short observation windows compared with the averaged periodogram. Computational costs and implementation details are also discussed.},
  author       = {Gran, Fredrik and Jakobsson, Andreas and Jensen, Jörgen},
  issn         = {0885-3010},
  keyword      = {common carotid artery,adaptive spectral estimation,spectral Doppler ultrasound,temporal resolution,data acquisition sequence,power spectral density,blood power spectral capon method,matched filters,blood amplitude and phase estimation technique,steady laminar flow,pulsating flow,femoral artery},
  language     = {eng},
  number       = {4},
  pages        = {700--714},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control},
  title        = {Adaptive spectral Doppler estimation},
  url          = {http://dx.doi.org/10.1109/TUFFC.2009.1093},
  volume       = {56},
  year         = {2009},
}