Magnetic resonance imaging bias field correction improves tumor prognostic evaluation after transcatheter arterial chemoembolization for liver cancer.

Similarly, for the analysis of the percentage change in ETV (Figure 3A ), the Martingale residual LOWESS smoothing curve showed a trend of decreasing and then increasing, suggesting that using the reduction rate of ETV before and after treatment as a linear variable in the Cox model may not be suitable and should be transformed into an indicator with an appropriate critical value.

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