Cardiac CT (Computed Tomography) scan has revolutionized the field of cardiovascular diagnostics, offering detailed insights into heart health and aiding in the accurate diagnosis of various heart conditions. This non-invasive imaging technique has become an essential tool in modern medicine, providing high-resolution images that assist in both diagnosis and treatment planning. This article explores the benefits, procedure, risks, and other important aspects of cardiac CT in Singapore (https://cadenceheart.sg/condition/cardiac-rhythm-disorders/), offering a thorough understanding of this advanced imaging technology.
Benefits of cardiac CT
Cardiac CT stands out for its numerous benefits in cardiovascular diagnostics for a lot of good reasons. One of its primary advantages is its non-invasive nature. Unlike traditional procedures such as cardiac catheterization, cardiac CT scan does not require inserting a catheter into the body, making it a less invasive option for assessing heart conditions.
Another significant benefit is high-resolution imaging. The technology allows for detailed visualization of the coronary arteries and cardiac structures, enabling precise assessment of coronary artery disease (CAD). This is particularly valuable in identifying blockages or narrowing of the arteries that may not be detectable through other imaging methods.
Cardiac CT is also instrumental in diagnosing congenital heart conditions. By providing a clear view of the heart’s anatomy, it helps in identifying structural abnormalities present from birth. Additionally, the imaging capabilities of cardiac CT are beneficial for pre-surgical planning and post-operative follow-up, ensuring that surgeons have a comprehensive understanding of the cardiac anatomy before and after procedures.
How cardiac CT works
Cardiac CT in Singapore utilizes X-ray technology to create detailed cross-sectional images of the heart. The procedure involves a CT scanner, which consists of a rotating X-ray tube and detectors arranged in a circular configuration. The patient lies on a table that moves through the scanner, while the X-ray tube rotates around them, capturing multiple images from different angles.
Contrast agents, or dyes, are often used in cardiac CT to enhance the visibility of blood vessels and cardiac structures. These contrast agents are injected into a vein, typically in the arm, and travel through the bloodstream to highlight the coronary arteries and other parts of the heart. The contrast helps in differentiating between various tissues and identifying abnormalities more clearly.
The process of cardiac CT scan is relatively quick. The patient may be asked to hold their breath for a few seconds while the images are being captured. This breath-holding is necessary to minimize motion artifacts that could affect image quality. The resulting images are then reconstructed into detailed cross-sectional views, which are analyzed by radiologists to diagnose any potential issues.
When compared with other imaging modalities, such as MRI or traditional angiography, cardiac CT offers distinct advantages. While MRI provides excellent soft tissue contrast, cardiac CT is faster and can capture images of the heart in a shorter time frame. Traditional angiography, though highly effective for visualizing blood vessels, is more invasive and involves the insertion of a catheter.
Indications for Cardiac CT
Cardiac CT is indicated for various clinical scenarios. One of the primary uses is the evaluation of coronary artery disease (CAD). For patients experiencing chest pain or other symptoms suggestive of CAD, cardiac CT in Singapore can provide a detailed view of the coronary arteries to identify any blockages or stenosis.
The technology is also valuable for assessing coronary anomalies, which are rare but significant congenital conditions that affect the coronary arteries. By visualizing these anomalies, cardiac CT helps in planning appropriate management strategies.
For patients undergoing heart surgery, cardiac CT is used for pre-operative assessment. It provides surgeons with a comprehensive view of the cardiac anatomy, allowing them to plan the procedure more effectively. Post-operative monitoring is another important application, as it helps in evaluating the success of the surgery and detecting any complications early.
In cases of unexplained symptoms or when other diagnostic tests are inconclusive, cardiac CT can be employed to investigate further. It offers a detailed assessment that can help in diagnosing conditions that might not be visible through other imaging methods.
What to expect during the procedure
Before undergoing a cardiac CT scan in Singapore, patients are typically instructed to follow certain preparatory steps. This may include fasting for a few hours before the procedure to ensure clear imaging and avoid any potential interference from food or drink. Additionally, patients may be advised to avoid caffeine or other stimulants that can affect heart rate.
During the procedure, patients will be asked to remove any metal objects, such as jewelry, which could interfere with the imaging. The patient will then lie on a table that slides into the CT scanner. A technician will administer the contrast agent through an intravenous (IV) line, and the scanner will capture images of the heart as the patient holds their breath for short periods.
The sensations experienced during the procedure are generally minimal. The contrast agent may cause a brief, warm sensation, and the noise from the CT scanner can be loud, but these effects are temporary and not usually uncomfortable. After the procedure, patients can resume normal activities, though they may be advised to drink plenty of fluids to help flush out the contrast agent from their system.
Interpretation of results
After the cardiac CT scan, the images are analyzed by a radiologist, who is a medical professional specialized in interpreting imaging studies. The radiologist examines the images for any abnormalities, such as blockages in the coronary arteries, structural heart defects, or other issues.
Common findings from cardiac CT include coronary artery disease, coronary anomalies, and various heart conditions. Based on the results, the radiologist will provide a detailed report to the referring physician, who will then discuss the findings with the patient and recommend appropriate next steps.
If the results indicate the presence of a heart condition or other abnormalities, additional tests or treatments may be necessary. The information obtained from the cardiac CT helps guide the development of a personalized treatment plan, which may include lifestyle changes, medication, or surgical intervention.
Cost and accessibility
The cost of cardiac CT in Singapore varies depending on several factors, including the healthcare facility, geographic location, and the specific procedures performed. On average, a cardiac CT scan may cost between SGD500 and SGD2,000. It may seem steep but remember that the total cost can be influenced by the complexity of the scan, the use of contrast agents, and any additional services provided.
Insurance coverage for cardiac CT scans can vary as well, with some plans covering the procedure in full or in part. Patients are advised to check with their insurance provider to understand their coverage and any potential out-of-pocket expenses.
Cardiac CT is widely available in many healthcare settings, including hospitals, specialized imaging centers, and some clinics. Accessibility can vary based on location, and patients may need to obtain a referral from a healthcare provider to schedule the procedure.
Dr Devinder Singh – Medical Director and Senior Consultant
Cadence Heart Centre
Mt. Elizabeth Hospital, 3 Mount Elizabeth #14-13
Mt Elizabeth Medical Centre, Singapore 228510
Mobile: (65) 8318 9884
Phone: (65) 6369 8789
