Abstract：
:This article proposes to estimate slow blood flow with high frequency ultrasound imaging. The proposed technique combines 2 methods. First, a statistical method, called Speckle Flow Imaging (SFI) based on the analysis of changes in the speckle pattern along time, gives an index directly related to the total velocity vector. Secondly, a block matching approach estimates the in-plane velocity components. Results on calibrated flow sequences of blood mimicking fluid have shown good agreement with the statistical model. The quantification of flow is achieved with pulsed flow and is also angle independent when the flow is perpendicular to the ultrasound beam. Speckle Tracking has been evaluated on the same data and has shown good estimation of the in-plane velocity vector when the component of velocity perpendicular to the imaging plane is inferior to 1mm/s. The results of these two methods permit the evaluation of the total 3D velocity field and the orthogonal velocity component relative to the imaging plane. This allows the quantification of blood flow (volumetric per time unit across the sequence).
journal_name
Ultrasonicsjournal_title
Ultrasonicsauthors
Aoudi W,Liebgott H,Needles A,Yang V,Foster FS,Vray Ddoi
10.1016/j.ultras.2006.06.025subject
Has Abstractpub_date
2006-12-22 00:00:00pages
e135-40eissn
0041-624Xissn
1874-9968pii
S0041-624X(06)00279-4journal_volume
44 Suppl 1pub_type
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