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EJNMMI Research
Figure 4 | EJNMMI Research

Figure 4

From: Evaluation of elastix-based propagated align algorithm for VOI- and voxel-based analysis of longitudinal 18F-FDG PET/CT data from patients with non-small cell lung cancer (NSCLC)

Figure 4

Example image of patient 7: baseline (A), reference (B), elastix adjusted (C) and subtraction (D). Because of a mix of non-active and active tumor tissue between the two scans (and no visible decrease in anatomic tumor size with stable disease), only 57% of the voxels aligned within the 95% limits of agreement of −1.46 to 1.46 ΔSUV. However, on crude visual assessment, the images look very similar.

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