Table 4.

Imaging features of the 10 DCIS lesions described on both 3 tesla (T) and 1.5 T protocols.

Imaging Feature	3T MRI	1.5T MRI	P value
Morphology			1.0
Mass	N=3 (30%)	N=2 (20%)
Non-mass enhancement	N=7 (70%)	N=8 (80%)
Initial enhancement
Mean peak enhancement (%)	173.8	118.2	0.08
Mean percent medium (%)	66.7	80.2	0.12
Mean percent rapid (%)	33.3	19.8	0.12
Delayed enhancement
Mean percent persistent (%)	54.6	62.8	0.29
Mean percent plateau (%)	23.2	21.0	0.05
Mean percent washout (%)	22.2	16.1	0.22

Abbreviations: T: tesla

P values were determined by Wilcoxon signed-rank test except morphology comparison, which was determined by Fisher’s Exact test.