Overview

DSA acquires images before and after contrast injection and subtracts them to highlight vascular anatomy and pathology with high temporal resolution.

Technique

Catheter based contrast delivery high frame rate acquisition and subtraction processing are key. Roadmapping aids interventions.

Clinical Uses

Cerebral peripheral and visceral angiography for diagnosis and endovascular therapy planning.

Limitations and Safety

Invasive procedure with contrast and radiation risks. Requires vascular access expertise and perioperative care.