What is Cardiac CT?

A cardiac CT (computed tomography) scan is a test that uses x-rays to create detailed images of a patient's heart and the blood vessels inside it. These images are produced in two-dimensional "slices" and then compiled into detailed three-dimensional images that allow doctors to study the heart from all angles.

Description

During a cardiac CT scan, a CT technologist will position the patient on a movable table that slides into and out of the CT scanner. Small patches called electrodes are attached to the patient's chest to record the heart's electrical activity. Once inside the scanner, an x-ray beam will rotate around the patient, taking pictures. It is important for the patient to remain still during the scan to avoid blurry images, and they may need to hold their breath for short periods. The scan usually takes about 10 minutes.

Uses

Cardiac CT scans are used by cardiologists to diagnose certain heart conditions. They are particularly helpful when an ultrasound does not provide enough detail or for patients who cannot have an MRI due to having a pacemaker or defibrillator, or because they cannot be sedated. While some children are sedated for a CT scan, it is not always necessary.

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