Thie, J., Hubner, K., Isidoro, F., & Smith, G. (1969). A weight index for the standardized uptake value in 2-deoxy-2- F-18 fluoro-D-glucose-positron emission tomography. Molecular Imaging and Biology, 9(2), 91-8. https://doi.org/10.1007/s11307-006-0068-x (Original work published 1969)