Question

Which revolutionary imaging system was developed by Godfrey Hounsfield and Alan Cormack?
A. X-ray computed tomography
B. Digital X-ray imaging
C. Computerized axial tomography
D. Digital subtraction angiography

Answer 1

CT is abbreviated for the computed tomography technology. It is used to obtain the scans of the internal organs using X-rays. Due to this reason, it is also known as X-ray computed tomography.

Complete answer: Sir Godfrey Newbold Hounsfield was an electrical engineer of English or British origin. Allan McLeod Cormack was a physicist of South-American African origin. Sir Godfrey Newbold Hounsfield and Allan McLeod Cormack together won the 1979 Nobel Prize for Physiology or -Medicine for developing the diagnostic technique of X-ray computed tomography or the CT machines.
In the modern PET-CT scan systems, three-dimensional imaging is often done with the help of a CT X-ray scan. It is performed on a patient using the same machine in the same session. The PET system detects gamma-ray pairs that are indirectly emitted by a positron-emitting radionuclide. The most commonly used radionuclide is Fluorine-18. It is introduced into the body on a biologically active molecule called the radioactive tracer. Later on, computer analysis helps in creating three-dimensional images of the concentration of the tracer within the body.
-Digital X-ray imaging is also known as digital radiography. It is a form of radiography. It uses X-ray sensitive plates. These plates capture the data directly and project it on a computer without the use of any intermediate cassettes. It was developed initially by Fujifilm Medical Systems.
-The computerized axial tomography is also known as the CAT scan. It provides images of the underlying organs of the body. This is done by obtaining data from various X-ray images and then turning them into the images. Due to this reason, it is considered more effective than conventional X-rays as they can reveal soft tissues and other structures that even the X-ray can’t show.
-Digital subtraction angiography or DSA is a fluoroscopic technique. It is used extensively for visualizing the blood vessels in interventional radiology. Structures like bones are subtracted or eliminated from the digital images as they are radiopaque. This gives a clear picture of blood vessels.
Thus, based on the above information, we can conclude that the revolutionary imaging system of X-ray computed tomography was developed by Godfrey Hounsfield and Alan Cormack.
Hence, the correct answer is option (A).

Note: The positron-emission tomography (PET) is a type of nuclear medicine functional imaging technique. PET is used to observe the metabolic processes in the body. It is an aid to the diagnosis of the disease.