Pulmonary thromboembolism - Hampton hump sign- Peripheral wedge-shapedarea of infarction - Westermark sign - Pulmonary oligemia - Pallas sign - Prominence of descending right pulmonary aery - Fleischner sign- Prominence of main pulmonary aery - Chang sign - abrupt change in caliber of the descendingright pulmonary aery - IOC for Pulmonary thromboembolism - CT Angio (MDCT with contrast) - In iodine allergies and pregnancy IOC for pulmonary thromboembolism - V/Q Scan - Gold standard for PTE - Pulmonary Angiography POLO MINT SIGN - The polo mint sign is a description given to a venous thrombosis on contrast-enhanced CT imaging. When viewed in the axial plane, a thin rim of contrast persists around a central filling defect due to thrombus.