has autonomous regional branches in Lisbon, Porto and Coimbra.

It had, at this time, provisional headquarters at the Hospital de Santa Marta in Lisbon.

The 7-hectare site on which it is located was acquired that same year with funds provided by the Compulsory Social Insurance Institute.

In accordance with what Dr. Francisco Gentil (one of the driving forces behind the creation of the IPO) had projected, Pavilion A was equipped with a Laboratory for Isotope Research for Medical Applications, after the donation of funds by the patient Abílio Lopes do Rego (who gave his name to the laboratory).

More recently and according to the demands of evolution, this space gave way to the current Nuclear Medicine Laboratory.