With Godfrey Hounsfield’s invention of computed tomography (CT) in 1971, three-dimensional planning became a possibility and created a shift from 2-D to 3-D radiation delivery.
Coa invención feita por Godfrey Hounsfield da tomografía computarizada en 1971, fíxose posible a planificación tridimensional, o que causou un cambio desde a administración de radiación en 2-D a 3-D.