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Table 4: Quantitative characteristics of vFP and TP contrast-enhancement sources on SPACE images^{^a}
vFP TP P vFP_small TP_small P vFP_large TP_large P
No. 38 66 28 29 10 37 
Volume (mm³) 
    Median 11.5 16 .027^{^b,^d} 7.5 9 .981^{^b} 34 49 .730^{^b}
    Range 3–84 3–565 3–14 3–14 30–84 15–565 
CNR 
    Median 7.73 11.18 .003^{^b,^d} 7.66 8.38 .544^{^b} 7.85 15.87 .015^{^b,^d}
    Range 1.67–22.67 2.18–44.06 1.67–22.37 2.18–20.28 3.92–22.67 5.67–44.06 
Morphology (No.) (%) 
    Nodular 26 (68.4%) 52 (78.8%) .078^{^c} 22 (78.6%) 26 (89.7%) .292^{^c} 4 (40%) 26 (70.3%) .036^{^c,^d}
    Tubular 4 (10.5%) 0 (0%) 2 (7.1%) 0 (0%) 2 (20%) 0 (0%) 
    Ring/open-ring 8 (28.1%) 14 (21.2%) 4 (14.3%) 3 (10.3%) 4 (40%) 11 (29.7%) 
↵a Large and small TPs and vFPs are categorized according to the median of their volume-distribution frequency (14 mm³).
↵b Mann-Whitney U test.
↵c Pearson χ².
↵d Statistically significant results.