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A new maximum likelihood blood velocity estimator incorporating spatial and temporal correlation

Authors
Publisher
IEEE
Publication Date
Keywords
  • The Blood Flow In The Human Cardiovascular System Obeys The Laws Of Fluid Mechanics
  • Investigation Of The Flow Properties Reveals That A Correlation Exists Between The Velocity In Time
  • The Possible Changes In Velocity Are Limited
  • Since The Blood Velocity Has A Continuous Profile In Time And Space
  • This Paper Presents A New Estimator (Stc-Mle)
  • Which Incorporates The Correlation Property
  • It Is An Expansion Of The Maximum Likelihood Estimator (Mle) Developed By Ferrara Et Al
  • With The Mle A Cross-Correlation Analysis Between Consecutive Rf-Lines On Complex Form Is Carried Ou
  • In The New Estimator An Additional Similarity Investigation For Each Evaluated Velocity And The Avai
  • An A Priori Probability Density Term In The Distribution Of The Observations Gives A Probability Mea
  • Both The Mle And The Stc-Mle Have Been Evaluated On Simulated And In-Vivo Rf-Data Obtained From The
  • Using The Mle 4
  • 1% Of The Estimates Deviate Significantly From The True Velocities
  • When The Performance Is Evaluated On The Simulated Data
  • These Deviating Estimates Arise
  • As The Search Range In The Correlation Analysis Exceeds One Wavelength
  • By Performing A Similar Investigation With The Stc-Mle
  • No Highly Deviating Estimates Occur
  • The Allowed Search Range Is Therefore Larger With The Stc-Mle
  • The Performance Evaluation On In-Vivo Data Further Reveals That The Number Of Highly Deviating Veloc
  • In General The Resulting Profiles Are Continuous And More Consistent With The True Velocity Profile
  • And The Introduction Of The Correlation Property Has Improved The Estimates
Disciplines
  • Mathematics

Abstract

A new maximum likelihood blood velocity estimator incorporating spatial and temporal correlation - DTU Orbit (19/04/14) Schlaikjer, M., & Jensen, J. A. (2001). A new maximum likelihood blood velocity estimator incorporating spatial and temporal correlation. In Proceedings on IEEE Ultrasonics Symposium. (Vol. 2, pp. 1433-1437). IEEE. 10.1109/ULTSYM.2001.991990

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