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[Diagnostic imaging in cardiac diagnosis]
1Medizinische Klinik I, Klinikum Grosshadern, Universität München. Knez@md1.med.uni-muenchen.de
Insights
Cardiac imaging utilizes various techniques to assess heart structure and function. While established methods like echocardiography are common, advanced imaging like CT and MRI show promise for coronary artery disease and myocardial evaluation.
Area of Science:
- Cardiology
- Medical Imaging
- Diagnostic Techniques
Background:
- Cardiac imaging is crucial for evaluating heart chambers, valves, vessels, and coronary arteries.
- It assesses chamber and valvular function, myocardial perfusion, viability, and metabolism.
Purpose of the Study:
- To review established and emerging cardiac imaging modalities.
- To highlight their applications in diagnosing cardiac conditions.
Main Methods:
- Commonly used: Chest roentgenography, angiography, echocardiography, nuclear imaging.
- Emerging techniques: Computed tomography (CT) and magnetic resonance imaging (MRI).
- Intravascular ultrasound for atherosclerosis detection.
Main Results:
- Coronary angiography is the gold standard for coronary anatomy.
- Fast CT and intravascular ultrasound show potential for coronary artery disease and atherosclerosis.
- Nuclear imaging and MRI are valuable for myocardial perfusion and viability.
- Echocardiography excels in chamber and valvular function assessment.
Conclusions:
- Established methods (roentgenography, angiography, echocardiography, nuclear imaging) are standard clinical practice.
- The definitive value of CT and MRI for coronary artery disease, perfusion, viability, and metabolism requires further definition.
Purpose:
Cardiac imaging includes determination of the size and structure of the cardiac chambers, valves, great vessels and the coronary arteries, chamber and valvular function, myocardial perfusion, viability and metabolism.
Material And Methods:
Chest roentgenography, angiography, echocardiography and nuclear imaging are commonly used but computed tomography and magnetic resonance imaging also offer a promising potential.
Results:
Coronary angiography is the gold standard in assessing coronary anatomy. Fast CT technologies such as electron-beam and multi-low-CT are promising non-invasive imaging modalities in the assessment of coronary artery disease. With intravascular ultrasound early stages of coronary atherosclerosis can be detected. For the assessment of myocardial perfusion and viability as well as cardiac function, scintigraphic methods are widely accepted. However, MRI methods have also reached a high degree of accuracy. Evaluation of chamber and valvular function is, due to its wide availability, the field of echocardiography.
Conclusions:
In clinical routine chest roentgenography, angiography, echocardiography and nuclear imaging are well established. The value of computed tomography and magnetic resonance imaging in the evaluation of coronary artery disease, myocardial perfusion, viability and metabolism is yet to be defined.