CT perfusion is a diagnostic imaging technique that assesses blood flow to tissues and organs. In this context, a "perfusion line" could potentially refer to a contrast injection line or tubing used in the administration of a contrast agent during CT perfusion scans.
If you are looking for information on a specific component or device related to CT perfusion imaging, I recommend checking with medical equipment suppliers, manufacturers, or healthcare professionals who specialize in radiology or diagnostic imaging. They can provide detailed information about the components and accessories used in CT perfusion studies.