History: July 19 (#2)

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Culture & Daily Rituals Technology History

July 19, 1983 The first three-dimensional reconstruction of a human head in a CT is published.

Commentary

On July 19, in the year 1983: The first three-dimensional reconstruction of a human head in a CT is published. A computed tomography scan, formerly known in a more rudimentary state as computed axial tomography scan, is a medical imaging technique used to obtain detailed internal images of the body. Why July 19, 1983 matters: The first three-dimensional reconstructio n of a human head in a CT is published. What began on this day left a lasting mark on history. The effects were felt immediately and continued to shape events, ideas, and lives long afterwards. CT scanners use a rotating X-ray tube and a row of detectors placed in a gantry to measure X-ray attenuations by different tissues inside the body. The multiple X-ray measurements taken from different angles are then processed on a computer using tomographic reconstruction algorithms to produce tomographic (cross-sectional) images of a body. CT scans can be used in patients with metallic implants or pacemakers, for whom magnetic resonance imaging (MRI) is contraindicated. Historical context: July 19, 1983 The 20th century brought rapid advances in health, communication, science, and technology that reshaped everyday human experience. The event on this day: The first three-dimensional reconstruction of a human head in a CT is published. CT scanners use a rotating X-ray tube and a row of detectors placed in a gantry to measure X-ray attenuations by different tissues inside the body. The multiple X-ray measurements taken from different angles are then processed on a computer using tomographic reconstruction algorithms to produce tomographic (cross-sectional) images of a body. CT scans can be used in patients with metallic implants or pacemakers, for whom magnetic resonance imaging (MRI) is contraindicated. Source: https://en.wikipedia.org/wiki/CT_scan (Wikipedia, CC BY-SA)

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