Dual-energy computed tomography image-based volumetric-modulated arc therapy planning for reducing the effect of contrast-enhanced agent on dose distributions

To compare the effect of a contrast-enhanced (CE) agent on volumetric-modulated arc therapy plans based on four types of images —virtual monochromatic images (VMIs) captured at 70 and 140 keV (namely VMI70 and VMI140, respectively), water density image (WDI), and virtual non-contrast image (VNC) generated using a dual-energy computed tomography (DECT) system. A tissue characterization phantom and a multi-energy phantom wer e scanned, and VMI70, VMI140, WDI, and VNC were retrospectively reconstructed.

Source: Medical Dosimetry - April 28, 2021 Category: Radiology Authors: Shingo Ohira, Riho Komiyama, Yuhei Koike, Hayate Washio, Naoyuki Kanayama, Shoki Inui, Yoshihiro Ueda, Masayoshi Miyazaki, Masahiko Koizumi, Teruki Teshima Source Type: research