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

Table 3

Accuracy of the percent changes of PET parameters from the preradiotherapy baseline in predicting local failure.

Week*	Volume^†		SUV^†max		RI^†max		SF^†max		Ki^†max
	AUC^‡	𝑃^‡	AUC^‡	𝑃^‡	AUC^‡	𝑃^‡	AUC^‡	𝑃^‡	AUC^‡	𝑃^‡
1	0.79	NS	0.50	NS	0.96	0.02	0.88	0.06	0.46	NS
2	0.83	0.09	0.67	NS	0.75	NS	0.75	NS	0.79	0.14
3	0.79	NS	0.54	NS	0.75	NS	0.63	NS	0.46	NS
4	0.88	0.06	0.54	NS	0.71	NS	0.83	0.09	0.29	NS
5	0.88	0.06	0.67	NS	0.58	NS	0.67	NS	0.67	NS
6	0.83	0.09	0.75	NS	0.71	NS	0.54	NS	0.67	NS
7	0.88	0.06	0.75	NS	0.33	NS	0.54	NS	0.63	NS

∗Week: time from the start of radiotherapy (which lasted 5 weeks).
†As denoted in Table 1 but represented as relative percent changes from the preradiotherapy baseline.
‡As denoted in Table 2. Significant values (P < 0.05) are displayed in bold.