CARdiac ct

With computer tomography, the coronary vessels (coronary arteries) as well as the heart can be examined with high spatial and temporal resolution. The very high rotation speed, high resolution detector configuration, and cardiac (ECG) triggering can only be provided by special CT systems. The dual-source CT scanner used in our clinics offers two high resolution detectors and tubes offset by 94° each that facilitate individual imaging free of artifacts in the subsecond range even at higher heart rates. In that, the device is extremely dose efficient and can capture the entire heart in 300ms with an overall dose of far less than 1mSv. In comparison with a cardiac catheter examination and even conventional computer tomography, this means dose reduction of more than 85% with a simultaneous time resolution (= shutter speed) of 75ms. Today, this technology is available only in very few clinics worldwide. With the cardiac CT, a wide range of questions can be answered quickly and precisely. These include a morphological assessment of the cardiac muscle, heart cavities, and valves. The main priority, however, is an exact qualitative and quantitative assessment of the cardiac vessels which facilitates an early and highly accurate detection of deformation or anomalies of the coronary arteries.

3D reconstruction of the heart by Radiologie München3D reconstruction of the heart from the CT data set at a heart rate of 110/min

Coronary tree at CT3D reconstruction of the coronary tree in standard projections of the cardiac catheter.

3D-Rekonstruktion of the coronary tree by Radiologie München3D reconstruction of the coronary tree in standard projections of the cardiac catheter.

3D reconstruction of the coronary tree3D reconstruction of the coronary tree in standard projections of the cardiac catheter.

For example, a cardiac CT can be appropriate for patients with atypical angina pectoris which generally manifests itself with an obscure tightness of the chest, chest pain, or even shortness of breath under stress. Compared to a stress ECG or stress scintigraphy, computer tomography can already reveal atherosclerotic changes and particularly deformations (stenoses) of the coronary vessels at a stage long before these become hemodynamically relevant (> 75% stenosis). In that, this procedure is well-suited for selected patient groups even in terms of an early detection of coronary heart disease (CHD). In general, a cardiac CT can also be used in the follow-up after stent PTCA or bypass surgery. However, this applies only to a very narrow indication spectrum directly linked to the patient’s symptoms of discomfort and the number, size, nature, and location of the stents and bypasses.

For more detailed questions regarding clinical indications, examination techniques and cost coverage please contact our specialists Prof. Herzog and Prof. Johnson. Both have many years of clinical and scientific experience in cardiac imaging and are internationally recognized specialists based on their numerous publications and conference presentations.

AOK-Cardiac-CT by Radiologie München

Dynamic imaging of wall and aortic valve motion in the CT scan in three levels.

VWI-Cardiac-CT

Imaging of an infarct scar on the anterior wall of the left ventricle with significant wall motion abnormalities.