๐Ÿงญ Workshop Week 4 Outline

  1. Differential Tractography
    • Cross-sectional analysis
    • Longitudinal analysis
  2. Correlational Tractography
    • Cross-sectional analysis / group comparison
    • Longitudinal analysis

๐Ÿง  Session 1: Differential Tractography

Adds an additional termination criterion:
โ†’ Tracking stops when the signal difference exceeds a defined threshold

๐Ÿงช Hands-On Exercises

๐Ÿ“‚ Example Dataset:

๐Ÿงฌ Longitudinal Analysis

๐Ÿ“Š Cross-Sectional Analysis


๐Ÿง  Session 2: Correlational Tractography

Identifies fiber tracts that correlate with a variable or condition
โ†’ Based on Spearman correlation across subjects


๐Ÿ“‚ Prepare the Database

Aggregate metrics (e.g., FA, QA) from: QSDR reconstructed files (*.qsdr.fz)

๐Ÿ“Œ Example Dataset: SCA2 study


๐Ÿงช Analysis Types

๐Ÿ“Š Cross-Sectional Analysis

๐Ÿงฌ Longitudinal Analysis

๐Ÿงฌ Post-hoc Analysis