What is Virtual Angiography (Coronary CT Angiography)?
The health of the heart’s blood vessels is one of the fundamental elements for sustaining human life. This is because coronary arteries deliver the oxygen and nutrients that the heart needs. When these vessels become narrowed or blocked, the heart's blood supply is compromised, potentially leading to symptoms such as chest pain, arrhythmia, and shortness of breath.
To identify the cause of these symptoms and examine the vascular structure in detail, one of the modern imaging methods used is Virtual Angiography, also known as Coronary CT Angiography. Thanks to advanced CT (computed tomography) technology, the coronary arteries can now be visualized in high resolution and evaluated in three dimensions.
What is Virtual Angiography? (Virtual Cardiac Angiography)
Virtual angiography is a non-invasive method in which the coronary arteries that supply blood to the heart are visualized using computed tomography (CT) along with a contrast agent.
During this procedure, no catheter is inserted into an artery — unlike conventional angiography, there is no need to access a vessel through the groin or arm. All images are obtained entirely through a CT scanner.
Other commonly used names:
- Virtual cardiac angiography
- Coronary CT angiography
- CT angiography / virtual angiography
What is Coronary CT Angiography?
Coronary CT Angiography is the technical term for virtual angiography. Using a computed tomography (CT) scan, the following can be achieved:
- The vascular structure is visualized in 3D
- Narrowing or flow disturbances in the coronary arteries can be detected
- Calcium scoring can be performed
- Surrounding heart tissues and vessel walls can be examined
One of the most important advantages of Coronary CT is its ability to capture images rapidly. In most cases, results can be obtained within seconds, making it highly valuable in emergency situations for diagnostic purposes.
How is Virtual Angiography Performed? Step-by-Step Process
Many people wonder how virtual angiography is performed. The procedure generally follows these steps:
1. Patient Preparation
- EKG electrodes are placed on the chest
- A stable heart rate may be required
- If necessary, medication may be administered to regulate heart rate
2. Administration of Contrast Agent (Dye)
- A contrast agent is injected through an intravenous (IV) line placed in the arm
- This substance highlights the blood vessels and improves image quality
3. CT Scan Stage
- The patient lies down inside the CT scanner
- Short breath-hold instructions are given during the scan
After the procedure, the patient can usually return to daily activities quickly. Evaluation and interpretation are performed by a specialized physician for each individual case.
Is Contrast Angiography the Same as Virtual Angiography?
Both methods use a contrast agent to visualize blood vessels, but they differ technically in several ways:
Virtual Angiography (Coronary CT Angiography)
- Performed with a CT scanner
- Non-invasive (no catheter insertion)
- Shorter procedure time
- Used for diagnostic purposes
Conventional Contrast Angiography (Invasive Angiography)
- Involves inserting a catheter into the blood vessel
- Requires access through a small artery
- The procedure may take longer
- Allows for both diagnosis and treatment
For this reason, virtual angiography is primarily used for imaging, while conventional angiography can also serve a therapeutic role when needed.
Risks and Considerations of Virtual Angiography
As with any medical procedure, the risks associated with virtual angiography may vary depending on an individual's health status.
- Sensitivity or allergic reaction to the contrast agent
- The need to assess kidney function before the procedure
- Reviewing the patient's allergy history and medical background beforehand
For these reasons, the decision to perform the procedure and all necessary preparations must be carefully planned by a physician based on individual evaluation.
How to Find Out the Cost of Virtual Angiography?
The cost of virtual angiography can vary depending on the healthcare facility, the technology used, the scope of the examination, and the individual's specific needs.
Pricing information can be provided directly by the healthcare institution through one-on-one consultation.
In accordance with healthcare regulations, cost details must be shared on a personalized basis following a medical evaluation.
