Grant Fong, MS

Monte Carlo simulations are widely used to derive effective dose conversion factors (k-factors) for CT; however, acquisition parameters such as helical pitch and tube starting angle are often randomly selected. The impact of these parameters on the variabilit...

Tin filtration has shown improved dose efficiencies in conventional CT for renal stone imaging. Photon-counting CT (PCCT) enables virtual monoenergetic image (VMI) reconstructions that can enhance stone conspicuity. This study evaluates potential dose-efficie...

High-pitch dual-source acquisition (“FLASH”) with tin spectral filtration has substantially reduced radiation dose while minimizing patient motion, both of which are particularly important for pediatric imaging. However, in adults, tin-filtered spectra have b...