Table 2.

Differences in ground glass nodule detection between the 3 visualization techniques for both observers in 34 nodules, 216 subjects

	Both negative (n)	Both positive (n)	First technique negative (n)	Second technique negative (n)	Difference between techniques (P value)
Observer 1
MIP vs MPR	191	29	2	3	1.0
MIP vs thin	191	30	2	2	1.0
MPR vs thin	193	31	1	0	1.0
Observer 2
MIP vs MPR	193	28	4	0	0.13
MIP vs thin	192	24	5	4	1.0
MPR vs thin	192	28	1	4	0.38

MIP images of 7-mm thickness at window level and width of −500/1500 HU. MPR of 5-mm thickness at window level and width of −800/800 HU. Thin slices from original 1-mm reconstruction at window level and width of −800/800 HU. Differences were tested with McNemar statistics.