Difference between revisions of "DBP:Harvard:Software:Minutes:5"

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== DTI Meeting Minutes | May 31, 2006 ==
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== DTI Meeting Minutes | May 3, 2006 ==
  
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<br />'''Present:''' Doug, Sylvain, Katharina, Marek, Marty, CF, Toshiro, KangUk
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<br /> Present: Marty, CF, Gordon, Mark, Marc, Doug, KangUk, Sylvain, Marek
  
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<br />'''Tensor Coregistration:'''
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<br />'''Scanning'''
  
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* Usman is working on coregistration for KangUk; each case takes about 3 hours to process
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* Marek is continuing to test out the new sequence
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* Mattan has improved his method; KangUk will test the update to see if it is faster or more accurate than the current method through Slicer
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* New rule that a licensed MD must request MRI even if for research
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* Soon the TransformVolume module in Slicer will be able to resample tensor datasets
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* Problem with reconstruction with multiple b-value images; causing FA to decrease significantly
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* Reminder that KangUk is leaving at the end of August
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* At the scanner, unable to arbitrarily decide the number of baseline images; Marek will try to manually change whatever parameter this is
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* Can get resolution of scans down to 1.5x1.5x1.5, but this may increase noise in the images
  
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<br />'''Anterior Commissure:'''
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<br />'''Tensor Registration'''
  
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* Sylvain created ColorByOrientation maps, but Gordon's boundaries are not matching well, perhaps due to some interpolation issue; Sylvain and Gordon will work on this
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* Goal of this is coregistration of segmented white matter labelmaps with our data
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* In test of new tensor registration module from Mattan, linear registration is working better than nonlinear, which is way off
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* KangUk will test this with scans of the same resolution
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* This registration is done at scalar level, and is not actually using the tensors; we can try the same thing using AG and multiple scalar maps
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* Marc will try to troubleshoot this on Friday
  
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<br />'''DeLisi data:'''
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<br />'''Anterior Commissure, Mode/FA histograms'''
  
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* Originally wanted to trace cingulate, uncinate, and fornix
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* Gordon has sent scripts for creating AC boundary maps
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* Sylvain and Doug will meet to decide how to delineate the cingulate
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* Gordon has sent script for generating histograms; will continue to work on this using labelmaps PNL sends to him.
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* 15 cases per group
 

Revision as of 13:55, 18 December 2006

Home < DBP:Harvard:Software:Minutes:5

DTI Meeting Minutes | May 3, 2006


Present: Marty, CF, Gordon, Mark, Marc, Doug, KangUk, Sylvain, Marek


Scanning

  • Marek is continuing to test out the new sequence
  • New rule that a licensed MD must request MRI even if for research
  • Problem with reconstruction with multiple b-value images; causing FA to decrease significantly
  • At the scanner, unable to arbitrarily decide the number of baseline images; Marek will try to manually change whatever parameter this is
  • Can get resolution of scans down to 1.5x1.5x1.5, but this may increase noise in the images


Tensor Registration

  • Goal of this is coregistration of segmented white matter labelmaps with our data
  • In test of new tensor registration module from Mattan, linear registration is working better than nonlinear, which is way off
  • KangUk will test this with scans of the same resolution
  • This registration is done at scalar level, and is not actually using the tensors; we can try the same thing using AG and multiple scalar maps
  • Marc will try to troubleshoot this on Friday


Anterior Commissure, Mode/FA histograms

  • Gordon has sent scripts for creating AC boundary maps
  • Gordon has sent script for generating histograms; will continue to work on this using labelmaps PNL sends to him.
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