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IN jury and TR a u matic ST ress Consortium Neuroimaging Leadership Core

IN jury and TR a u matic ST ress Consortium Neuroimaging Leadership Core. Lead Investigators: Martha Shenton, BWH Ron Kikinis, BWH Bruce Rosen, MGH. Goals for Today. Compare scans between GE (BWH) and Siemens (MGH) scanners (Structural and DWI)

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IN jury and TR a u matic ST ress Consortium Neuroimaging Leadership Core

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  1. INjury and TRaumatic STress Consortium Neuroimaging Leadership Core Lead Investigators: Martha Shenton, BWH Ron Kikinis, BWH Bruce Rosen, MGH

  2. Goals for Today • Compare scans between GE (BWH) and Siemens (MGH) scanners (Structural and DWI) • Overview of post-processing steps attempted (EMSeg, FreeSurfer, etc.) • Troubleshooting still left to run (Future steps/goals)

  3. Raw Data

  4. What we have • GE (BWH) • IR-Prep SPGR (Good) • T2-weighted (Good) • 5-degree SPGR (Good) • 30-degree SPGR (Good) • DWI (movement) • SWI • Resting State fMRI • Siemens (MGH) • MP-RAGE (Good) • T2-weighted (Cerebellum slightly cut off) • 5-degree SPGR (Good) • 30-degree SPGR (Good) • DWI (Good) • SWI • Resting State fMRI

  5. Post-processing January 4, 2010

  6. Structural Post-Processing • GE • Masking • IR-SPGR • vol = 1777.82 mL • 30-degree SPGR • vol = 1788.59 mL • Realign • Siemens • Masking • MP-RAGE • vol = 1781.3 mL • 30-degree SPGR • vol = 1792.28 mL • Realign EMSeg IR-SPGR & T2 30-degree SPGR & T2 FreeSurfer Seg IR-SPGR 30-degree SPGR EMSeg 30-degree SPGR &T2 FreeSurfer Seg MP-RAGE 5-degree and 30-degree

  7. FreeSurfer Seg January 4, 2010

  8. FreeSurfer Seg January 4, 2010

  9. FreeSurfer Seg January 4, 2010

  10. FreeSurfer Seg FreeSurfer Segmentation Comparisons January 4, 2010

  11. DWI • Notes from C-F (see handouts) • Had to correct for motion in BWH scan January 4, 2010

  12. DWI – Motion Correction 108 Directions- ADC 62 Directions- ADC January 4, 2010

  13. DWI – Motion Correction 108 Directions- Color by Orientation 62 Directions- Color by Orientation January 4, 2010

  14. DWI – Motion Correction 108 Directions- FA 62 Directions- FA January 4, 2010

  15. To do: January 4, 2010

  16. To do: • Structural • Troubleshoot EMSeg • Finish 30-degree FreeSurfer Parcellation • DWI • Do we need to check for need for motion correction on Siemens scan? • SWI • Check by Karl January 4, 2010

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