Many existing algorithms for estimation of the fiber orientation distribution function (ODF) inherently assume Gaussian noise distribution. Against this assumption, the non-central chi noise distribution of diffusion signals causes bias in fiber ODF estimation. In this work, we introduce a means of transforming the diffusion-weighted signals to have a Gaussian noise distribution with the help of the recently introduced x-q space non-local means (XQ-NLM) algorithm. We show that this signal mapping improves estimation of fiber ODFs.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Keywords