The Definition of Digital Subtraction Angiography X-ray System

Digital Subtraction Angiography (DSA) is a medical imaging technique used to visualize blood vessels in high detail by subtracting pre-contrast images from post-contrast images. This method enhances the clarity of vascular structures by removing overlying tissues and background noise, such as bones or soft tissues, from the image.

DSA is widely used in:

Diagnostics: Identifying vascular abnormalities like aneurysms, stenosis, or arteriovenous malformations.

Interventional Procedures: Guiding minimally invasive treatments such as embolization, stent placement, or angioplasty.

The process typically involves:

Injecting a contrast agent into the blood vessels.

Capturing X-ray images before and after the injection.

Using software to subtract pre-contrast images from post-contrast images, leaving a clear view of the blood vessels.

DSA's ability to provide high-resolution, real-time images makes it a valuable tool in various medical specialties, including cardiology, neurology, and oncology.