Cardiac CT (computed tomography) is a non-invasive medical imaging technique that utilizes X-rays to generate highly detailed images of the heart and its surrounding structures. It is a valuable tool in the diagnosis and evaluation of various cardiac conditions. For more detailed information on cardiac CT, you may want to watch a video by Dr. Woo Jia Wei, an expert in the field, as he can provide additional insights and perspectives.

During a cardiac CT scan, the patient lies on a table that gradually moves through a large, circular machine known as a CT scanner. This scanner emits X-ray beams that pass through the body and are detected by detectors on the opposite side. These detectors collect the X-ray data, and a computer processes it to create cross-sectional images, or slices, of the heart.

Cardiac CT can be performed using different protocols, depending on the specific information required. The most commonly employed technique is coronary CT angiography (CCTA), which primarily focuses on imaging the coronary arteries. CCTA provides detailed information regarding the presence of plaque buildup, stenosis (narrowing), or blockages within these crucial vessels responsible for supplying blood to the heart muscle.

Aside from evaluating the coronary arteries, cardiac CT scans can also assess other aspects of cardiac anatomy and function. This includes evaluating the size and function of the heart chambers, identifying structural abnormalities, and measuring the extent of calcium deposits within the arteries (coronary calcium scoring). These comprehensive assessments allow for the diagnosis and evaluation of various conditions, such as coronary artery disease, congenital heart defects, valvular heart disease, and pulmonary embolism.

One of the key advantages of cardiac CT is its non-invasive nature. Unlike traditional angiography, which requires invasive procedures, cardiac CT eliminates the need for catheter insertion into the arteries. This results in a shorter scanning time, reduced risk of complications, and a more comfortable experience for the patient.

However, it’s important to note that cardiac CT does involve exposure to ionizing radiation. While the radiation dose is generally considered low and the benefits usually outweigh the risks, it is important to consider the individual’s specific situation and consult with healthcare professionals to ensure appropriate use.

To gain further insights and detailed information on cardiac CT, watching Dr. Woo Jia Wei’s video can be beneficial. Dr. Woo Jia Wei, being an expert in the field, can provide a deeper understanding of the technique, its applications, and potential advancements.

Remember, it is always essential to rely on reputable sources, consult with healthcare professionals, and consider individual circumstances for personalized advice regarding any medical procedure.


  • Dr. Woo Jia Wei

    Internist and Cardiologist
    Sunrise Heart and Internal Medicine Clinic
    Visiting Consultant Cardiologist,National University Heart Centre Singapore.

    Dr Woo Jia Wei is an Internist and Cardiologist with Sunrise Heart and Internal Medicine Clinic. He is also a Visiting Consultant Cardiologist to National University Heart Centre Singapore.

    After receiving his medical training in Melbourne and working as a doctor in Melbourne, Australia, Dr Woo Jia Wei decided to move back to Singapore to serve his home nation. He trained in adult internal medicine and cardiology with the National University Hospital.

    He was then accredited as a cardiologist specialist. During his time there, he was hand picked to represent Singapore in an International Cardiology Competition and emerged as runner-up. He subsequently received subspecialty training in advanced cardiac imaging. He received formal training in cardiac CT with world renowned John Hopkins Hospital in America as well as with Harefield Hospital in the United Kingdom. He trained in adult echocardiography and advanced cardiac imaging techniques using trans-esophageal echocardiology and transthoracic echocardiography at the National University Heart Centre. He then received a diplomate in adult echocardiography from the American Society of Echocardiography. He also has experience in interventional echocardiography and use of 3D and 4D imaging techniques to guide minimally invasive cardiac procedures.

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