Computed tomography

What is computed tomography (CT)?

CT imaging is a method for visualising the structural organisation of the brain using the attenuation of X-rays to generate image contrast. Tissues in regions of interest are highlighted based on their X-ray absorption properties, as dense tissues attenuate X-rays more than soft tissues, and air attenuates the least. Three-dimensional images are generated from a series of two-dimension X-ray images taken around a single axis of rotation.

What is the evidence for CT brain structure?

Moderate quality evidence suggests reduced temporal lobe volume in people with schizophrenia. Moderate to low quality evidence is unclear as to the utility of structural imaging as a means of identifying individual structural abnormalities in patients following a first episode of psychosis.

March 2019

Last updated at: 2:37 am, 28th March 2019
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Fact Sheet Technical Commentary

NeuRA Libraries

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