Difference between revisions of "Projects:LMMSERicianDWINoiseRemoval"

From NAMIC Wiki
Jump to: navigation, search
Line 12: Line 12:
 
The method was evaluated on real and synthetic datasets. A Slicer 3 module was developed.
 
The method was evaluated on real and synthetic datasets. A Slicer 3 module was developed.
  
''Example results''
 
 
[[Image:Glyph_orig_rician_LMMSE.png|left|thumb|300px|FA values and direction of major tensor eigenvalue based on original DWI data.]]
 
 
[[Image:Glyph_f10_rician_LMMSE.png|left|thumb|300px|FA values and direction of major tensor eigenvalue after filtering the DWI data using the LMMSE filter.]]
 
  
 
''References''
 
''References''
Line 25: Line 20:
  
 
* BWH: Santiago Aja-Fernandez, Marc Niethammer, Marek Kubicki, Martha Shenton, Carl-Fredrik Westin.
 
* BWH: Santiago Aja-Fernandez, Marc Niethammer, Marek Kubicki, Martha Shenton, Carl-Fredrik Westin.
 +
 +
''Example results''
 +
 +
[[Image:Glyph_orig_rician_LMMSE.png|left|thumb|300px|FA values and direction of major tensor eigenvalue based on original DWI data.]]
 +
 +
[[Image:Glyph_f10_rician_LMMSE.png|left|thumb|300px|FA values and direction of major tensor eigenvalue after filtering the DWI data using the LMMSE filter.]]

Revision as of 19:07, 3 September 2007

Home < Projects:LMMSERicianDWINoiseRemoval

Restoration of DWI data using a Rician LMMSE Estimator

Back to NA-MIC_Collaborations

Objective

Provide a way for noise removal in diffusion weighted images incorporating the Rician noise model. The Rician noise level is estimated automatically and used to parametrize the local Linear Minimum Mean Squared Error estimator.

Progress

The method was evaluated on real and synthetic datasets. A Slicer 3 module was developed.


References

  • Aja-Fernandez, S., Alberola-Lopez, C., Westin, C.F., "Filtering and noise estimation in magnitude MRI and Rician distributed images," submitted to IEEE Transactions on Image Processing.
  • Aja-Fernandez, S., Niethammer, M., Kubicki, M., Shenton, M.E., Westin, C.-F., "Restoration of DWI data using a Rician LMMSE estimator," submitted to MRM.

Key Investigators

  • BWH: Santiago Aja-Fernandez, Marc Niethammer, Marek Kubicki, Martha Shenton, Carl-Fredrik Westin.

Example results

FA values and direction of major tensor eigenvalue based on original DWI data.
FA values and direction of major tensor eigenvalue after filtering the DWI data using the LMMSE filter.