Application advantages of dual-layer spectral detector CT in cardiac imaging / 中国介入影像与治疗学

ABSTRACT

The equivalent detector structure in the upper and lower layers of dual-layer spectral detector CT (SDCT) allows the two sets of high and low energy data be analyzed in the raw data domain space. It can be used to reconstruct spectral images reflecting different composition of compton scattering and photoelectric effect, so as to merge and reconstruct conventional polyenergetic images which are completely equivalent to that of ordinary CT. The spectral data of SDCT possesses the features of no mismatch, aligned source and same direction into projection, which increase the application values in cardiac imaging. The application advantages of SDCT in improving coronary CTA image quality, "double low" imaging, plaque and stent display and myocardial perfusion were reviewed in this article.