TY - GEN
T1 - Online motion detection in high angular resolution diffusion imaging
AU - Caruyer, Emmanuel
AU - Aganj, Iman
AU - Lenglet, Christophe
AU - Sapiro, Guillermo
AU - Deriche, Rachid
PY - 2011
Y1 - 2011
N2 - The orientation distribution function (ODF) can be reconstructed online incrementally from diffusion-weighted MRI with a Kalman filtering framework. This online reconstruction can provide real-time feedback to the practitioner, especially appreciated for long acquisition protocols typical in Q-ball imaging. On top of the Kalman filter, we propose a method to evaluate online the reconstruction accuracy of the estimated ODF in constant solid angle. In addition, monitoring the residuals of the Kalman filter, we design, based on statistical tests, two algorithms for online detection of subject motion. The proposed techniques, tested on real and synthetic data under various experimental conditions, can detect rotation by angle less than 3.
AB - The orientation distribution function (ODF) can be reconstructed online incrementally from diffusion-weighted MRI with a Kalman filtering framework. This online reconstruction can provide real-time feedback to the practitioner, especially appreciated for long acquisition protocols typical in Q-ball imaging. On top of the Kalman filter, we propose a method to evaluate online the reconstruction accuracy of the estimated ODF in constant solid angle. In addition, monitoring the residuals of the Kalman filter, we design, based on statistical tests, two algorithms for online detection of subject motion. The proposed techniques, tested on real and synthetic data under various experimental conditions, can detect rotation by angle less than 3.
KW - Q-ball imaging (qbi)
KW - error propagation
KW - motion estimation
KW - online model estimation
KW - orientation distribution function (odf)
UR - http://www.scopus.com/inward/record.url?scp=80055045794&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80055045794&partnerID=8YFLogxK
U2 - 10.1109/ISBI.2011.5872458
DO - 10.1109/ISBI.2011.5872458
M3 - Conference contribution
AN - SCOPUS:80055045794
SN - 9781424441280
T3 - Proceedings - International Symposium on Biomedical Imaging
SP - 516
EP - 519
BT - 2011 8th IEEE International Symposium on Biomedical Imaging
T2 - 2011 8th IEEE International Symposium on Biomedical Imaging: From Nano to Macro, ISBI'11
Y2 - 30 March 2011 through 2 April 2011
ER -