Heavy metals such as cadmium, lead and mercury are common air pollutants. and are emitted (predominantly into the air) as a result of various industrial ac-. tivities. This report reviews the available information on the sources, chemical. properties and spatial distribution of pollution by cadmium, lead and mercury.
Assuming that you are already inside the CT scanner ready to get scanned. CT scan without contrast (head, sinus, orbits, abdomen, pelvis, cervical, thoracic, lumbar and dental scans) take approximately 15 minutes. CT studies with contrast of the chest, pelvis, head or neck take approximately 30 minutes. Whereas, aortic contrast studies may take up to 45 minutes.
Quick Assessment Tool. Average time from presentation in the trauma bay to CT scan was 56 minutes, and the CT scan took an average of 30 minutes. There were no incidents or adverse events during CT scans in the study group, and no patient had to have the procedure aborted for bleeding or instability.