Digital Subtraction Angiography (DSA) is a medical examination that provides detailed images of blood vessels, particularly those in the brain and neck. This examination helps doctors detect narrowing, blockages, aneurysms, and other blood vessel abnormalities that can increase the risk of stroke.
Purpose of DSA Examination
DSA examination aims to:
- Knowing the condition of blood vessels accurately
- Detecting blood vessel abnormalities early
- Determine the correct diagnosis and treatment plan
When is DSA Required?
DSA is recommended for patients with the following conditions:
- History or symptoms of stroke, either hemorrhagic stroke or blockage stroke
- Suspected blockage or narrowing of blood vessels
- Aneurysm or blood vessel abnormality
- CT scan or MRI results that require further examination
- Patients with headaches for more than 6 months with normal MRI/CT Scan images and a history of hypertension, diabetes mellitus, smoking or heart problems.
How is the DSA Procedure Performed?
The DSA procedure is performed using minimally invasive techniques and is supervised by experienced medical personnel, including:
- Administration of local anesthesia
- Catheter placement through a vein in the thigh or arm
- Injection of contrast agent to see blood flow
- Patient monitoring during and after the procedure
Advantages of DSA Examination
- The image of the blood vessels is very clear and detailed.
- Helps in more accurate diagnosis
- Minimally invasive procedures
- Relatively low risk and faster recovery time
This article was written by Dr. Tri Wahyudi, Sp.N. FINS, FINA, FMIN (Neurology Specialist at EMC Alam Sutera Hospital).