Low-Contrast Agent Dose Dual-Energy CT Monochromatic Imaging in Pulmonary Angiography Versus Routine CT

• DOI: 10.1097/rct.0b013e31828f5020
• Publication Date: 2013-07-17T12:23:56Z
• Authors: Jian Dong; Xiaoying Wang; Xuexiang Jiang; Li Gao; Feiyu Li; Jianxing Qiu; Yufeng Xu; He Wang
• Keywords: Monochromatic color; Pulmonary angiography; Image noise

Objective This study aimed to retrospectively evaluate the feasibility and reliability of low-contrast agent dose dual-energy computed tomography (DECT) monochromatic imaging in pulmonary angiography. Methods Computed angiography was performed 86 patients, 41 120-kVp (CT) 45 DECT with dose. The images were reconstructed at optimal kiloelectron-voltage (keV), demonstrating best contrast-to-noise ratio between artery soft tissue, 70 keV. Image quality compared by quantitative subjective indexes. radiation doses recorded. Results Compared CT, keV showed superior indexes inferior image quality, whereas demonstrated no statistical difference quality. All suspicious embolisms diagnosed confidently combination 2 kinds imaging. is almost twice as CT. Conclusions Low-contrast accommodates intravascular enhancement contrast arteries, improves diagnostic confidence compatible