What is the injection rate required to adequately fill the aorta during the imaging process of AAA repair?

The adequate injection rate for filling the aorta during the imaging process of abdominal aortic aneurysm (AAA) repair is critical for obtaining clear and diagnostic images. An injection rate within the range of 25 to 30 ml/sec is considered optimal because it ensures rapid contrast bolus delivery, which improves the visualization of blood flow. This rate allows for the quick opacification of the aorta, facilitating better assessment of the aneurysm and surrounding structures during imaging.

Using a higher injection rate, such as 25 to 30 ml/sec, enhances the contrast density in the aorta, which is vital for accurate imaging results. It also helps to minimize motion artifacts that could occur with slower contrast injection rates, thereby providing clearer images for evaluation. This is especially important in emergency situations or in procedures where precision is crucial.

In comparison, lower injection rates would not provide the necessary contrast opacification needed for effective imaging of the aorta during AAA repair. They might lead to underfilling of the aorta, resulting in suboptimal visualization that could hinder the assessment of the aneurysm's size and characteristics. Therefore, the choice of 25 to 30 ml/sec is aligned with best practices in interventional radiology for this specific procedure.