잠시만 기다려 주세요. 로딩중입니다.

Spectral Computed Tomography: Fundamental Principles and Recent Developments

Korean Journal of Radiology 2021년 22권 1호 p.86 ~ 96
So Aaron, Nicolaou Savvas,
소속 상세정보
 ( So Aaron ) - Lawson Health Research Institute Imaging Program
 ( Nicolaou Savvas ) - Vancouver General Hospital Department of Emergency and Trauma Imaging

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.

키워드

X-rays; Computed tomography; Spectral; Dual energy

원문 및 링크아웃 정보

  

등재저널 정보