Diagnosis of Acute Pulmonary Embolism on a Non-contrast CT Scan

Abstract

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.

Keywords

• acute pulmonary embolism
• halo sign
• non-contrast chest ct-scan