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Abstract #1811

The role of high-resolution apparent diffusion coefficient histogram analysis in evaluating tumor response of locally advanced rectal cancer after neoadjuvant chemeradiotherapy

lanqing Yang1 and bing Wu1

1West China Hospital, Chengdu, China

This study analyzed both pre- and post-chemoradiotherapy ADC map of rectal cancer to evaluate tumor regression by using histogram metrics. The ADC map was generated from high-resolution DWI using read-out segmented echo-plannar imaging sequence, with less distortion and susceptibility artifact. Our study did not find any added value of histogram metrics of ADC map in assessing tumor response, and post-treatment mean ADC value alone may be enough in clinical.

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