CT True/False

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Topic: CT
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Computed tomography (CT) image reconstruction and basics:
  • ACT images are formed from a matrix of voxels each with an assigned number representing the X-ray attenuation coefficient of a corresponding volume within the patient.
  • BFiltered back projection is a process in which the number assigned to each voxel from each projection is adjusted by a function of the measured amounts in the neighbouring pencil beams.
  • CEach voxel is measured independently by a pencil beam falling on a particular detector.
  • DCT has a higher spatial resolution than conventional plain film radiography.
  • ECT has a better contrast resolution than conventional plain film radiography.