Heart CT scan

What is a Heart CT Scan?

A Heart CT Scan is an imaging test that is used to assess the size, shape, and functioning of the heart. It is also known as coronary computed tomography angiography (CCTA) and is typically used for diagnosing heart disease. A Heart CT Scan is non-invasive which means there is no risk of infection or allergic reaction when compared to a traditional heart catheterization. During the scan, a computer takes multiple ultrasound images of the heart from different angles to create a 3D image of the organ.

Preparation for a Heart CT Scan

Prior to a Heart CT Scan, patients should inform their doctor of all medications they are taking (including over the counter medications, vitamins, and herbal supplements) and if they have any allergies. Patients may have to fast for several hours prior to the scanning, but the requirements vary depending on each institution.

Procedure

At the time of the procedure, the patient will be attached to monitors to check for a continuously recorded heart rate, blood pressure, and oxygen level. The scanning is performed while the patient lies on a moving bed between the two sophisticated X-ray tube detectors. The bed moves slowly through a donut-shaped ring while the detectors capture images of the heart. The procedure is painless and generally lasts for about 15 minutes.

Types of Heart CT Scan

• Standard Heart CT Scan: This type of scan uses a 3D image to detect structural abnormalities and detect any blockages in the arteries.
• CT Coronary Angiogram: This scan is used to measure the degree of narrowing or blockages that is present in the coronary arteries.
• CT Cardiac Perfusion Study: This scan is used to look for areas of decreased blood supply due to blockages in the coronary arteries.

Risks

Heart CT Scans generally have no significant risks associated with them. The radiation exposure is low and usually much lower than traditional x-ray exams. However, there is a slight risk of kidney issues due to the contrast material used during the scan, which is why individuals with pre-existing kidney problems have to be monitored closely.

When Is a Heart CT Scan Done?

A Heart CT Scan is generally done when a patient has symptoms of coronary artery disease such as chest pain or when a patient has risk factors for the same. The scan can also be done to assess heart structure abnormalities, congestive heart failure, valve problems, pericardial diseases, and coronary artery calcification.

Why Is a Heart CT Scan Done?

A Heart CT Scan can be beneficial in detecting and diagnosing heart conditions at an early stage, which often leads to early treatment and better outcomes. The scan also helps in assessing the severity of the disease, deciding the necessary treatments, and accurately monitoring the patient’s progress.