sentences:  Sør-Trøndelag county municipality increased its ownership from one third to half in 1948 and in 1950 it changed its name to Trondheim Central Hospital.In 1959 the first part of the central section with six stories is built, expanded in 1974 to ten.In 1964 the county took over the responsibility for the hospital and renamed to Trondheim Regional Hospital two years later.