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Fig. 3 | Cancer Imaging

Fig. 3

From: Early differentiating between the chemotherapy responders and nonresponders: preliminary results with ultrasonic spectrum analysis of the RF time series in preclinical breast cancer models

Fig. 3

Changes in the tumor volumes in responding and nonresponding tumors. The parameters were shown as the means ± SD. a In responders, fold changes in the tumor volumes of the therapeutic group were significantly smaller than those of the control group on days 6, 8, and 12 after treatment initiation (*P < 0.01, ** P < 0.001), whereas no significant differences were found on days 0, 2 and 4 (P > 0.05). b In nonresponders, no significant differences were found regarding the fold changes in the tumor volumes between the therapeutic and control groups on any day (P > 0.05)

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