Table 2.

Comparison of good responders and poor responders, in terms of change in mean PE (E1%), post each cycle of NACT compared with baseline (pre-NACT)

Time point comparison	Change in PE (E1%) from pre-NACT to third cycle of NACT				Comparison of the two groups in terms of difference of PE (E1%) from pre-NACT to follow-up NACT cycles
	Good responder		Poor responder
	Mean (SD) of absolute change	Mean (SD) of % change	Mean (SD) of absolute change	Mean (SD) of % change	p-value of absolute change	p-value of % change
Post first cycle - Pre-NACT	−0.71 (1.03)	−8.0% (19.5)	0.65 (1.07)	18.5% (31.2)	<0.001	<0.001
Post second cycle - Pre-NACT	−1.52 (1.34)	−19.8% (21.7)	1.06 (1.36)	30.1% (38.7)	<0.001	<0.001
Post third cycle - Pre-NACT	−2.03 (1.24)	−28.5% (20.4)	0.98 (1.84)	29.2% (49.1)	<0.001	<0.001

NACT, neoadjuvant chemotherapy; PE, peak enhancement; SD, standard deviation.