Medical Imaging

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Medical Imaging

  1. 1. Signal Averaging Method (BOLD- fMRI Signal Data)
  2. 2. Outline
  3. 3. Introduction- fMRI
  4. 4. BOLD fMRI
  5. 5. Signal Averaging
  6. 6. Advantages of Signal Averaging
  7. 7. Objective
  8. 8. Method
  9. 9. Method (cont’d)
  10. 10. Flow Chart Diagram BOLD fMRI Data Time Correlation In common Frequency Correlation SIGNAL AVERAGING New Hemodynamic Response Time Correlation with High Threshold Final MAP
  11. 11. Imaging Parameters
  12. 12. Data Analysis
  13. 13. Results
  14. 14. Frequency Correlation
  15. 15. Time and Frequency Correlation
  16. 16. FTAP Hemodynamic Response Vs. Reference
  17. 17. Final Activation Map; Threshold = 0.6 Activation observed on the sides of the brain
  18. 18. BH Hemodynamic Response bh002
  19. 19. Final Map, Threshold = 0.4 Activation observed on the sides and through the Mid line
  20. 20. DSST1 Hemodynamic Response bh002
  21. 21. Final Map, Threshold = 0.5 Activation only in SLICE # 20 in the back of the brain
  22. 22. DSST2 Hemodynamic Response
  23. 23. Final Map, Threshold = 0.4
  24. 24. DSST3 Hemodynamic Response
  25. 25. Final Map, Threshold = 0.5
  26. 26. FTAP: bh002 Vs. bh101 OLD bh 101 YOUNG bh 002
  27. 27. BH: bh002 Vs. bh101 Hemodynamic Response for bh101 at Threshold= 0.6: Hemodynamic Response for bh002 at Threshold= 0.4:
  28. 28. DSST3: bh002 Vs. bh118 Hemodynamic Response for bh118 at Threshold= 0.6: Hemodynamic Response for bh002 at Threshold= 0.5:
  29. 29. Conclusion
  30. 30. References

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