## Abstract

A method for determining both velocity magnitude and angle in a synthetic aperture ultrasound system is described. The approach uses directional beamforming along the flow direction and cross-correlation to determine velocity magnitude. The angle of the flow is determined from the maximum normalized correlation calculated as a function of angle. The method is investigated using data measured by an experimental ultrasound scanner from a flow rig. A commercial 7 MHz linear array transducer is used and data are measured for flow angles of 60° and 90°. The velocity magnitude is determined with a precision of 0.36 % (60°) and 1.2 % (90°), respectively. The 60° angle is estimated with a bias of 0.54° and a standard deviation of 2.1°. For 90° the bias is 0.0003° and standard deviation 1.32°.

Original language | English |
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Title of host publication | IEEE International Symposium on Biomedical Imaging 2004 |

Publisher | IEEE |

Publication date | 2004 |

Pages | 33-36 |

ISBN (Print) | 0-7803-8389-3 |

DOIs | |

Publication status | Published - 2004 |

Event | 4th IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Arlington, United States Duration: 15 Apr 2004 → 18 Apr 2004 Conference number: 4 http://www.informatik.uni-trier.de/~ley/db/conf/isbi/isbi2004.html |

### Conference

Conference | 4th IEEE International Symposium on Biomedical Imaging |
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Number | 4 |

Country | United States |

City | Arlington |

Period | 15/04/2004 → 18/04/2004 |

Internet address |