Quantitative comparison of virtual non-contrast and true non-contrast computed tomography pulmonary angiography images across eight thoracic tissue types: A retrospective cross-sectional study
Objective To evaluate the quantitative reliability of virtual non-contrast images derived from spectral computed tomography pulmonary angiography across eight thoracic tissues, assessing their feasibility as a true non-contrast substitute. Methods In this retrospective cross-sectional study, we analyzed 169 patients un...