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. 2013 Aug 7;8(8):e72230. doi: 10.1371/journal.pone.0072230

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© 2013 Ng et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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A. A pretreatment axial-enhanced MRI shows the oropharynx tumor (arrow). B. The corresponding PWI map shows the tumor with a K ^trans value of 0.336 min^-1. C. The corresponding ADC map shows the tumor with an ADC value of 0.76 × 10^-3 mm²/s. D. Post-treatment axial-enhanced MRI shows a residual left oropharynx tumor (arrow) which was proven by endoscopic biopsy.