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Table 3 SUVmax and TBratio for benign and malignant lymph nodes as measured on standard- and small-voxel PET images

From: Diagnostic implications of a small-voxel reconstruction for loco-regional lymph node characterization in breast cancer patients using FDG-PET/CT

  Benign lymph nodes (n = 61) Malignant lymph nodes (n = 148)
SUVmax Standard-voxels 1.1 ± 0.4 (mean ± SD) 4.4 ± 3.3
Small-voxels 1.5 ± 0.5 5.9 ± 4.1
Percent change 37% 40%
TBratio Standard-voxels 2.0 ± 0.7 5.3 ± 4.2
Small-voxels 2.8 ± 1.4 7.3 ± 5.2
Percent change 44% 43%
  1. SUVmax and TBratio for malignant lymph nodes were averagely 3.0 and 1.6 times as high as compared to benign nodes for both types of voxel reconstructions (p < 0.001). Mean SUVmax and TBratio typically increased with 40% when using small-voxels (p < 0.001)
  2. SUV max maximum standardized uptake value, TB ratio ratio between the lymph node SUVmax and the lymph node background uptake, PET positron emission tomography, SD standard deviation