Motion Detection in Diffusion MRI via Online ODF Estimation.

Journal Article (Journal Article)

The acquisition of high angular resolution diffusion MRI is particularly long and subject motion can become an issue. The orientation distribution function (ODF) can be reconstructed online incrementally from diffusion-weighted MRI with a Kalman filtering framework. This online reconstruction provides real-time feedback throughout the acquisition process. In this article, the Kalman filter is first adapted to the reconstruction of the ODF in constant solid angle. Then, a method called STAR (STatistical Analysis of Residuals) is presented and applied to the online detection of motion in high angular resolution diffusion images. Compared to existing techniques, this method is image based and is built on top of a Kalman filter. Therefore, it introduces no additional scan time and does not require additional hardware. The performance of STAR is tested on simulated and real data and compared to the classical generalized likelihood ratio test. Successful detection of small motion is reported (rotation under 2°) with no delay and robustness to noise.

Full Text

Duke Authors

Cited Authors

  • Caruyer, E; Aganj, I; Lenglet, C; Sapiro, G; Deriche, R

Published Date

  • January 2013

Published In

Volume / Issue

  • 2013 /

Start / End Page

  • 849363 -

PubMed ID

  • 23509445

Pubmed Central ID

  • PMC3594974

Electronic International Standard Serial Number (EISSN)

  • 1687-4196

International Standard Serial Number (ISSN)

  • 1687-4188

Digital Object Identifier (DOI)

  • 10.1155/2013/849363


  • eng