Table 3:

Hopkins criteria scores for head and neck cancers^{^a}

Hopkins Criteria Score^{^b}	Lesion FDG Uptake	Therapy Response
1	Focal uptake less than IJV	CMR
2	Focal uptake greater than IJV, but less than liver	Likely CMR
3	Diffuse uptake greater than IJV and liver	Likely posttreatment inflammation
4	Focal uptake greater than liver	Likely residual tumor
5	Focal uptake markedly greater than liver	Residual tumor

Note:—IJV indicates internal jugular vein.
↵a Adapted from Ref. 16.
↵b Five-point scale Hopkins criteria scores used to classify head and neck cancer response after treatment; new lesions are considered to be PD.