In utilizing a technetium 99m perfusion agent, are most laboratories imaging rest first and stress later, or the reverse?

@article{Vita1998InUA,
  title={In utilizing a technetium 99m perfusion agent, are most laboratories imaging rest first and stress later, or the reverse?},
  author={Natalio Vita and Xiu Jie Liu and John Lekakis and Elizabeth M. Prvulovich and Richard Underwood and Gert Hendrix and F. Prigent},
  journal={Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology},
  year={1998},
  volume={5 2},
  pages={240-1}
}