Beta 1

Title Sparse sequences
Author Sørensen, Bjarke Beck
Supervisor Jensen, Jørgen Arendt (Biomedical Engineering, Department of Electrical Engineering, Technical University of Denmark, DTU, DK-2800 Kgs. Lyngby, Denmark)
Institution Technical University of Denmark, DTU, DK-2800 Kgs. Lyngby, Denmark
Thesis level Master's thesis
Year 2007
Abstract Estimation of blood velocities using the autocorrelation on sparse data sets is a method developed by Jørgen Arendt Jensen. The method seeks to overcome some of the trade offs that is found in traditional systems. One example would be the fact that when orientation is desired then spectral Doppler, velocity lines will have to be allocated for this purpose. This creates either a gap or lowers the effective pulse repetition frequency. To work around this is the basic idea of the sparse sequence method [1]. By use of sparse sequences, full pulse repetition frequency can be used for velocity estimation, and at the same time the interleaved shots can be used for orientation.
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Admin Creation date: 2009-06-25    Update date: 2009-06-25    Source: dtu    ID: 245560    Original MXD