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Table 1: Univariate association between PET/MR imaging NI-RADS and treatment failure
PET/MR Imaging NI-RADS Score No. Sites Failure P Value
Primary site 43 18 (41.9%) <.001
 1 19 2 (10.5%) 
 2 12 5 (41.7%) 
 3 12 11 (91.7%) 
Neck lymph nodes 43 5 (11.6%) <.001
 1 33 0 (0.0%) 
 2 6 1 (16.7%) 
 3 4 4 (100%) 
Combined sites 86 23 (26.7%) <.001
 1 52 2 (3.8%) 
 2 18 6 (33.3%) 
 3 16 15 (93.8%)