TY - GEN
T1 - Online orientation distribution function reconstrugtion in constant solid angle and its application to motion detection in HARDI
AU - Caruyer, Emmanuel
AU - Aganj, Iman
AU - Muetzel, Ryan L.
AU - Lenglet, Christophe
AU - Sapiro, Guillermo
AU - Deriche, Rachid
PY - 2010
Y1 - 2010
N2 - The diffusion orientation distribution function (ODF) can be reconstructed from q-ball imaging (QBI) to map the complex intravoxel structure of water diffusion. As acquisition time is particularly large for high angular resolution diffusion imaging (HARDI), fast estimation algorithms have recently been proposed, as an on-line feedback on the reconstruction accuracy. Thus the acquisition could be stopped or continued on demand. We adapt these real-time algorithms to the mathematically correct definition of ODF in constant solid angle (CSA), and develop a motion detection algorithm upon this reconstruction. Results of improved fiber crossing detection by CSA ODF are shown, and motion detection was implemented and tested in vivo.
AB - The diffusion orientation distribution function (ODF) can be reconstructed from q-ball imaging (QBI) to map the complex intravoxel structure of water diffusion. As acquisition time is particularly large for high angular resolution diffusion imaging (HARDI), fast estimation algorithms have recently been proposed, as an on-line feedback on the reconstruction accuracy. Thus the acquisition could be stopped or continued on demand. We adapt these real-time algorithms to the mathematically correct definition of ODF in constant solid angle (CSA), and develop a motion detection algorithm upon this reconstruction. Results of improved fiber crossing detection by CSA ODF are shown, and motion detection was implemented and tested in vivo.
KW - High angular resolution diffusion imaging (HARDI)
KW - Motion estimation
KW - On-line model estimation
KW - Orientation distribution function (ODF)
KW - q-ball imaging (QBI)
UR - http://www.scopus.com/inward/record.url?scp=77955215276&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77955215276&partnerID=8YFLogxK
U2 - 10.1109/ISBI.2010.5490052
DO - 10.1109/ISBI.2010.5490052
M3 - Conference contribution
AN - SCOPUS:77955215276
SN - 9781424441266
T3 - 2010 7th IEEE International Symposium on Biomedical Imaging: From Nano to Macro, ISBI 2010 - Proceedings
SP - 812
EP - 815
BT - 2010 7th IEEE International Symposium on Biomedical Imaging
T2 - 7th IEEE International Symposium on Biomedical Imaging: From Nano to Macro, ISBI 2010
Y2 - 14 April 2010 through 17 April 2010
ER -