News FocusRadiology

Second Thoughts About CT Imaging

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Science  25 Feb 2011:
Vol. 331, Issue 6020, pp. 1002-1004
DOI: 10.1126/science.331.6020.1002

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  • RE: "Second Thoughts About CT Imaging" by Lauren Schenkman

    "Vast forces underfoot" by Andrew Robinson - Nature volume 528, 3 December 2015 speaks of shock waves sent through the earth by earthquakes. The second paragraph says "Developments in seismology ... have ranged ... to global seismic tomography." This is what we need to save us from those short-sighted doctors who perpetually order one computer-tomography (CT) scan after another, even for now healthy patients. They naturally want to monitor patients in case disease returns, but the low doses of radiation build up and could negatively affect future health.

    A harmless scan using seismic tomography could image the body's interior in a similar manner to the way it uses earthquake waves to image the earth's interior. This possibility may be beyond today's technology but it might utilize vibrations caused by pulsing of the blood in arteries, or perhaps the jostling of atoms called Brownian movement.

    Competing Interests: None declared.