Which statement is true about CT development?

• A. Godfrey Hounsfield developed the mathematics used to reconstruct CT images.
• B. Alan Cormack developed the mathematics used to reconstruct CT images.
• C. The mathematics were not important to CT development.
• D. The Nobel Prize for CT was awarded for CT in 1982.

Answer: (B)

The essential point is who provided the mathematical framework that turns X-ray projections into cross‑sectional images. Allan Cormack developed the mathematics used to reconstruct CT images, giving CT its theoretical backbone for turning multiple projections into accurate internal slices. Godfrey Hounsfield built the first CT scanner and brought the hardware and practical implementation to life, applying the math to produce real images, but the reconstruction algorithms themselves come from Cormack’s theoretical work.

The other statements miss important truths: the mathematics were crucial to CT, not unimportant; Hounsfield did not develop the mathematics, he developed the scanner and demonstrated its use; and the Nobel Prize for CT was awarded in 1979, not 1982.