211367
20181203023959.0
10.1109/ISBI.2006.1624890
doi
ARTICLE
Full Flow/Motion-Field Recovery from Pulsed-Wave Ultrasound Doppler Data
2006
IEEE
2006
Journal Articles
We present a new computational method for reconstructing a vector field from scattered, pulsed-wave ultrasound Doppler data. The main difficulty is that the Doppler measurements are incomplete, for they do only capture the velocity component along the beam direction. We thus propose to combine measurements from different beam directions. However, this is not yet sufficient to make the problem well posed because (i) the angle between the directions is typically small; and (ii) the data is noisy and nonuniformly sampled. We therefore introduce a vector-spline regularization that forces the solution to be well behaved while inducing some helpful coupling between the x and y components of the vector field. We discretize our vector-spline reconstruction problem in a uniform B-spline basis, obtaining a sparse system of equations that can be solved efficiently. We validate our method using real tissue Doppler data for which the ground truth is known. Finally, we present some patient results obtained with color Doppler imaging; in particular, we are able to observe blood-flow variations in the bifurcation of the carotid artery.
eng
Arigovindan, M.
139003
240493
Sühling, M.
Jansen, C.
Hunziker, P.
Unser, M.
115227
240182
213–216
Arlington VA, USA
Proceedings of the Third IEEE International Symposium on Biomedical Imaging: From Nano to Macro (ISBI'06)
URL
http://bigwww.epfl.ch/publications/arigovindan0601.html
URL
http://bigwww.epfl.ch/publications/arigovindan0601.pdf
URL
http://bigwww.epfl.ch/publications/arigovindan0601.ps
LIB
252054
U10347
oai:infoscience.tind.io:211367
article
GLOBAL_SET
STI
EPFL-ARTICLE-211367
arigovindan0601/LIB
EPFL
PUBLISHED
REVIEWED
ARTICLE