So far, the researchers have scanned 30 casts of men, women, children, a boar and a dog.
Convulsed in the last moments of life, the cast of the dog was found to contain no bones. The archaeologists believe the bones were possibly removed from the cavity prior to the Fiorelli casting process.
The project is a "great step forward in our knowledge of antiquity," according to the archaeological superintendent of Pompeii Massimo Osanna.
"We are going to know a lot about the victims of Pompeii: their age, sex, what they ate, what diseases they had and their social class," he told reporters.