What is CT Scanning?
A CT scanner is a doughnut-shaped machine that uses advanced x-ray technology to obtain cross-sectional images of the body. The scanner rotates around the patient. Each revolution generates a number of “slices”. Sophisticated fast computer technology is employed to create high quality 3-dimensional diagnostic images.
What is a 64 Slice Scanner?
A 64 Slice Scanner is the fastest and most advanced CT scanner available today. It has 64 detectors which obtain 128 “slices” per rotation. It is the only CT scanner capable of imaging both soft and hard plaque in the coronary arteries long before the patient becomes symptomatic.
Why is a 64 Slice CT Scan better than traditional methods of diagnosing cardiac disease?
Traditional stress tests and echocardiograms identify coronary artery disease once it is already in a more serious advanced phase. Coronary angiography is more invasive than CT Scanning and is not used as a screening method for early diagnosis of coronary disease.
What aspects of the cardiovascular system can be imaged by the 64 slice scanner?
The 64 Slice CT Scanner can image all the coronary arteries. It can also image carotid arteries in patients where there is risk of a stroke. Vessels of the lower extremities and other organs such as the kidneys can be successfully imaged. Extremity veins in patients with suspected deep vein thrombosis can also be imaged. The scanner can also produce high quality images of the heart in patients with suspected congenital heart disease, cardiac mass, or diseases of the pericardium.
Why do I need a Coronary CT Scan if I don’t have any symptoms?
Some patients fall into the category of an early form of coronary heart disease, which does not cause any symptoms. If left untreated and unmonitored, these patients are at an increased risk for a heart attack and sudden cardiac death. These patients usually have risk factors such as high cholesterol, high blood pressure, past or present smoking habit, obesity, diabetes, or family history. Many lives will be saved by early diagnosis with subsequent lifestyle modification and medication.
What information does a CT coronary angiogram provide?
Calcium score
Functional analysis of how well the heart muscle works
Detailed images of the coronary arteries
Detailed images of the chambers of the heart
Why do I need to take a medicine before my scan?
A slow heart rate allows us to get the best possible images. We would like your heart rate to be around 60 beats per minute. Many patients require a single dose of a medication to slightly slow their heart rate. This is administered 1 hour before the scan. It is well tolerated with minimal side effects. We will give you detailed instructions about the medication and ask that you precisely adhere to them. Occasionally a further dose is required. This will be administered through the IV by one of our physicians.
|
