"CT imaging of blood vessels opacified by contrast medium"這句話最適合定義下列何種CT影像？

CT angiography (CTA) 就是注入顯影劑讓血管顯影（opacified），再以CT影像呈現血管結構。題幹「CT imaging of blood vessels opacified by contrast medium」完全對應血管攝影定義。