Spectral Computed Tomography: Fundamental Principles and Recent Developments.

Spectral Computed Tomography: Fundamental Principles and Recent Developments.
Korean J Radiol. 2020 Sep 10;:
Authors: So A, Nicolaou S
Abstract
CT is a diagnostic tool with many clinical applications. The CT voxel intensity is related to the magnitude of X-ray attenuation, which is not unique to a given material. Substances with different chemical compositions can be represented by similar voxel intensities, making the classification of different tissue types challenging. Compared to the conventional single-energy CT, spectral CT is an emerging technology offering superior material differentiation, which is achieved using the energy dependence of X-ray attenuation in any material. A specific form of spectral CT is dual-energy imaging, in which an additional X-ray attenuation measurement is obtained at a second X-ray energy. Dual-energy CT has been implemented in clinical settings with great success. This paper reviews the theoretical basis and practical implementation of spectral/dual-energy CT.
PMID: 32932564 [PubMed - as supplied by publisher]

Source: Korean J Radiol - September 9, 2020 Category: Radiology Authors: So A, Nicolaou S Tags: Korean J Radiol Source Type: research