AnalyzeNNLS / News: Recent posts

Version 2.5.0 Released - includes Temporal Phase Correction

Version 2.5.0 has been released.

This update includes temporal phase correction (TPC) scripts in the Library (see 'Lib' folder). The TPC technique is published in: Bjarnason TA, Laule C, Bluman J, Kozlowski P. Temporal phase correction of multiple echo T2 magnetic resonance images. Journal of Magnetic Resonance 231, 22-31 (2013). URL http://dx.doi.org/10.1016/j.jmr.2013.02.019.

The linux release is a re-bundled version of the windows files. The aspect ratio and default positioning of the user interface windows might not be ideal. These can be adjusted using Guide.

Posted by Thorarin Bjarnason 2013-04-18

Version 2.4.0 released

Version 2.4.0 has been released. Go to the Download page for the most recent version.

This updated version allows users to analyze the real portion of complex multiecho decays by setting a flag in UserVar.txt.

The linux release is a re-bundled version of the windows files. The aspect ratio and default positioning of the user interface windows might not be ideal. These can be adjusted using Guide.

The tutorial video has been moved to http://www.youtube.com/watch?v=Wa1IIeocVsU . This video was made pre version 2.1.0.

Posted by Thorarin Bjarnason 2012-01-27

Version 2.2.0 released

Version 2.2.0 has been released. Go to the Download page for the most recent version.

The documentation page links to a video podcast of how to use AnalyzeNNLS (http://podcasts.imaginginformatics.ca/20081207AnalyzeNNLSTutorial.m4v) . This video was made pre version 2.1.0. Referring to that video, the following changes have been made to AnalyzeNNLS based on feedback I have received.

Version 2.1.0 - 1) Generalized Cross Validation (GCV) approach to regularization. In this version I removed the user-controlled smoothing parameter range used for regularizing the fit, which in turn creates smooth T2 distributions instead of discrete spikes. To my knowledge, GCV was first used on multiecho data by: Dula et al
J Magn Reson, Vol. 196, No. 2. (February 2009), pp. 149-156.
Version 2.1.0 - 2) The library now includes a script that converts Bruker and dicom multiecho files to MEID. MEID is AnalyzeNNLS's native format, standing for MultiEcho Image Data.
Version 2.1.0 - 3) Ran on Vista with Matlab 2008.... read more

Posted by Thorarin Bjarnason 2009-06-03

AnalyzeNNLS news feed active

I have now activated AnayzeNNLS news feed, which will mainly be used to notify people of new versions of AnalyzeNNLS.

enjoy

Posted by Thorarin Bjarnason 2009-06-03

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