Early Treatment Response Monitoring Using 2-Deoxy-2-[<sup>18</sup>F]fluoro-D-glucose Positron Emission Tomography Imaging during Fractionated Radiotherapy of Head Neck Cancer Xenografts

<table>Retention Index (RI), greater than 0 after the first 10 Gy of fractionated radiotherapy, is highly predictive of local failure. Solid line represents tumors with RI &lt; 0 after 10 Gy; dashed line represents tumors with RI &gt; 0 after 10 Gy.</table>

BioMed Research International

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Figure 5

Figure 5: Early Treatment Response Monitoring Using 2-Deoxy-2-[<sup>18</sup>F]fluoro-D-glucose Positron Emission Tomography Imaging during Fractionated Radiotherapy of Head Neck Cancer Xenografts 

Figure 5 | Early Treatment Response Monitoring Using 2-Deoxy-2-[18F]fluoro-D-glucose Positron Emission Tomography Imaging during Fractionated Radiotherapy of Head Neck Cancer Xenografts 