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Table 1: Demographics and clinical information
RN (n = 20 Lesions) Tumor (n = 17 Lesions)
Age (mean) (SD) (yr)^{^a} 65 (8.9) 54 (12.8)
Sex (male/female)^{^a} 9:8 3:10
Primary tumor^{^b} 
 Lung 10 (50.0%) 3 (17.6%)
 Breast 5 (25.0%) 9 (52.9%)
 Melanoma 2 (10.0%) 0
 Colorectal 2 (10.0%) 0
 Tonsillar 1 (5.0%) 0
 Sinonasal 0 3 (17.6%)
 Ovarian 0 2 (11.8%)
Surgical resection for determination of histopathologic ground truth diagnosis^{^b} 7 (35.0%) 6 (35.2%)
Interval time between end of radiation and first MR imaging (median) (range) (mo) 24.9 (4–109) 16.3 (3–41)
Interval time between end of radiation and PET-MR imaging (median) (range) (mo)^{^c} 27.9 (14–117) 12.4 (6–37)
Total radiation dosage (mean) (SD) (Gy) 24.5 (4.2) 22.8 (3.1)
↵a Thirty subjects who had a total of 37 lesions (n = 20 RN; n = 17 tumor) were included in age and sex analyses.
↵b Percentages for primary tumor type and surgical resection are relative to the total number of lesions within each column.
↵c Subset of 17 subjects who had a total of 20 lesions (n = 8 RN, n = 12 tumor) who underwent PET-MRI.