. Author manuscript; available in PMC: 2011 Sep 1.

Published in final edited form as: Radiol Clin North Am. 2010 Sep;48(5):1043–1054. doi: 10.1016/j.rcl.2010.06.001

Table 1.

Conspicuity of Lesions on Non-Contrast Dedicated Breast CT Compared with Mammography^***

	Score
Category	No. of Breasts	Mean ± SD	Median ^*	Pvalue
All	180	5.7 ± 2.1	5.5 (5.4, 5.6)	0.20
Lesion Type
Masses	124	4.9 ± 1.5	5.0 (4.7, 5.3)	< 0.001 ^**
Calcification	56	7.6 ± 1.9	8.0 (7.2, 8.8)	< 0.001 ^**
Lesion Diagnosis
Malignant	97	5.5 ± 1.9	5.5 (5.3, 5.7)	0.90
Benign	83	6.1 ± 2.2	5.5 (5.0, 6.0)	0.10

Number in parentheses are 95% confidence units

^**

Significant

^***

Conspicuity was ranked from 1 to 10. A score of 5.5 indicates equal visualization with DBCT and mammography; a score of less than 5.5 indicates superior visualization with DBCT and a score greater than 5.5 indicates superior visualization with mammography.