There are multiple definitions:

1. three-dimensional(English)

   • refers e.g. to tomodosimetry
   • 2D
   • Medical imaging
   • https://doi.org….1118/1.4740102

2. Toronto Diet, Digestive tract, and Disease Centre(English)

   • SSB
   • Diet, Gastroenterology
   • https://doi.org…kopen.2022.2092