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How reliable is CT angiography for diagnosing heart disease?

CT angiography is considered most useful for eliminating the possibility of heart disease in intermediate-risk patients. In other words, if a patient’s symptoms, risk factors and other tests provide conflicting information, the cardiologist may be uncertain whether the patient has heart disease.

 

In such patients, a negative CT angiogram (meaning, no evidence of serious heart disease) is highly accurate. In fact, its negative predictability is about 99 percent when compared to nuclear stress testing.

 

As a result, patients with a negative CT angiogram can be nearly certain they do not have coronary artery disease and, therefore, can be spared the need for a conventional invasive angiogram.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.