Functional MRI Data Mapping Process

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Explore the process of combining anatomical and functional MRI data, registration, and result visualization in functional MRI data mapping. Learn about objects involved, including anatomical data, parametric maps, and registration data, for comprehensive data analysis in MRI studies.

  • Functional MRI
  • Data Mapping
  • Anatomical Data
  • Parametric Maps
  • Data Registration
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Presentation Transcript

  1. Blending in Functional MRI Wim Corbijn van Willenswaard Chair WG16 (MRI)

  2. Agenda Functional MRI Objects involved How to combine the objects September 2015, FMRI F2F and WG06 Functional MRI data mapping 2

  3. Functional MRI Combining: Anatomical data Functional data Registration (optional) to align data Combined by: Blending operation September 2015, FMRI F2F and WG06 Functional MRI data mapping 3

  4. Anatomical data Standard gray scale data (can be color) Used to locate the area of the Functional activity September 2015, FMRI F2F and WG06 Functional MRI data mapping 4

  5. Functional data Parametric data describing relation between an voxel and the Functional activity Can be: Statistical parameter Functional activation Cardiovascular reactivity Functional connectivity Other September 2015, FMRI F2F and WG06 Functional MRI data mapping 5

  6. Registration Registration would be needed for Data having different Frame of Reference Compensate for movements during the Assessment Compensate for Image distortion September 2015, FMRI F2F and WG06 Functional MRI data mapping 6

  7. Result View combining: - Anatomical image - 4 parametric maps Using: Thresholds Opacity September 2015, FMRI F2F and WG06 Functional MRI data mapping 7

  8. Result September 2015, FMRI F2F and WG06 Functional MRI data mapping 8

  9. Result September 2015, FMRI F2F and WG06 Functional MRI data mapping 9

  10. Objects involved Anatomical data: Enhanced MR Image object (or other modality) Functional data: Parametric Map object Registration data: (Deformable) Spatial registration object September 2015, FMRI F2F and WG06 Functional MRI data mapping 10

  11. Parametric map Functional information Color Functional Floating point information Integer map Color map Remark: Color LUT is present for integer map, but not for floating point Color LUT Real world value mapping Not present September 2015, FMRI F2F and WG06 Functional MRI data mapping 11

  12. Combining Objects Blending Presentation State Combines two gray scale objects Adds color to the object used for overlay Defines opacity Not able to use the Parametric map Not able to combine more than two objects September 2015, FMRI F2F and WG06 Functional MRI data mapping 12

  13. How to continue New Blending object: - Combining more than 2 objects - 2D Datasets (anatomical and parametric): - Equal #slices - Equal geometry - NO Registration - Allow coloring + opacity for every layer - Handles Threshold of parametric map - Enable Threshold contour display September 2015, FMRI F2F and WG06 Functional MRI data mapping 13

  14. Parametric Map Extensions needed: - Threshold information - Double / Floating point map coloring (Identity Pixel Value Transformation?) Scalar for September 2015, FMRI F2F and WG06 Functional MRI data mapping 14

  15. Not Covering September 2015, FMRI F2F and WG06 Functional MRI data mapping 15

  16. Questions September 2015, FMRI F2F and WG06 Functional MRI data mapping 16

  17. Questions Different number of frames MPR / Geometry difference Registration might need MPR Threshold and Value representation / CP? Leave out Tract set for now. Anatomical can be a set of Classic Images Can registration be used for parametric map How to translate Floats to Colors How to convey the meaning of a parametric Map reference or enhance the Parametric map Store image pixel, in combination with RW value IOD/macro Can we enhance the Alpha LUT transfer function to cope with Threshold. RW value September 2015, FMRI F2F and WG06 Functional MRI data mapping 17

  18. Result Combined: Anatomical grayscale image Parametric map September 2015, FMRI F2F and WG06 Functional MRI data mapping 18

  19. Combining Objects Option 2: (Planar MPR) Volumetric Presentation State Combines multiple Volumetric objects Extensive color capabilities for objects Defines opacity Defines lot more than needed September 2015, FMRI F2F and WG06 Functional MRI data mapping 19

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