What is the expected range for injection timing for small vessels?

The expected range for injection timing for small vessels is 20 - 30 seconds because this duration allows for a controlled and adequate flow of contrast material through the narrow lumen of small blood vessels. Injecting contrast too quickly can lead to turbulence and inadequate visualization, as the contrast may not properly opacify the vessel or may result in artifacts on imaging. The 20 - 30 seconds range permits the contrast agent to travel smoothly and provides sufficient time for it to fill the vessel before imaging is performed, ensuring optimal visualization and diagnosis.

Timing injections is critical in interventional radiology, especially for small vessels where proper contrast enhancement is necessary to distinguish between structures and achieve diagnostic accuracy. It also considers the physiological response of vessels to flow rates, emphasizing the need for careful monitoring and adjustment during procedures involving small vascular targets.