Answer:
for the development of computer assisted tomography.
Step-by-step explanation:
The 1979 Nobel Prize winners for Medicine, Sir Godfrey Hounsfield and Allan Cormack won the prize "for the development of computer-assisted tomography."
This is evident in the fact that Sir Godfrey Hounsfield was an English Electrical Engineer, while Allan Cormack was widely known as a South African American physicist.
They both come together to "develop computer-assisted tomography" which is used to provide detailed information about the structure and anatomy of human organs.