TEACHING POINT: There are two important signs that could be seen on a non-contrast chest CT scan that can lead to the diagnosis of a pulmonary embolism: the hyperdense pulmonary artery sign and pulmonary infarction.
Ebser, L., & Coche, E. (2023). Diagnosis of Acute Pulmonary Embolism on a Non-contrast CT Scan. Journal of the Belgian Society of Radiology, 107(1), 91 [1-3]. https://doi.org/10.5334/jbsr.3295 (Original work published 2023)