Table 3.

Relationship between quantitative parameters and pathological complete response.

	Pre-NAC			2 cycles NAC			% Change
Parameter	pCR (n = 25)	non-pCR (n = 68)	P value	pCR (n = 20)	non-pCR (n = 43)	P value	pCR (n = 20)	non-pCR (n = 43)	P value
WIT (s)	12.3 ± 4.9	10.8 ± 5.5	.070	12.7 ± 2.9	11.0 ± 3.0	.055	36.2 ± 25.1	31.2 ± 20.0	.535
PI	38.1 ± 6.9	40.0 ± 7.9	.207	32.8 ± 3.4	34.3 ± 4.7	.031	22.1 ± 10.5	10. 7 ± 10.8	.000
TTP(s)	12.4 ± 3.2	12.1 ± 5.7	.397	13.0 ± 3.4	14.0 ± 3.8	.280	22.5 ± 19.1	36.8 ± 32.9	.058
AS	3.1 ± 0.7	3.6 ± 1.2	.151	2.6 ± 0.6	2.7 ± 0.8	.701	29.6 ± 12.2	31.9 ± 28.0	.701
Diameter (cm)	3.2 ± 1.0	3.8 ± 1.8	.323	2.4 ± 0.9	2.9 ± 1.4	.095	26.3 ± 17.5	24.9 ± 16.7	.751

AS = ascending slope, PI = peak intensity, TTP = time to peak, WIT = wash-in time.