|
Harrison's Principles of Internal Medicine, 18e
| Part 10. Disorders of the Cardiovascular System > Section 2. Diagnosis of Cardiovascular Disorders > |
Chapter 229. Noninvasive Cardiac Imaging: Echocardiography, Nuclear Cardiology, and MRI/CT Imaging
Sections: Noninvasive Cardiac Imaging: Echocardiography, Nuclear Cardiology, and MRI/CT Imaging: Introduction, Echocardiography, Nuclear Cardiology, MRI and CT Imaging, Selection of Imaging Tests, Further Readings.
Topics Discussed: cardiac imaging procedures; cardiovascular examination and evaluation; cardiovascular testing.
Excerpt:"Cardiovascular imaging plays an essential role in the practice of cardiology. Two-dimensional (2D) echocardiography is able to visualize the heart directly in real time using ultrasound, providing instantaneous assessment of the myocardium, cardiac chambers, valves, pericardium, and great vessels. Doppler echocardiography measures the velocity of moving red blood cells and has become a noninvasive alternative to cardiac catheterization for assessment of hemodynamics. Transesophageal echocardiography (TEE) provides a unique window for high-resolution imaging of posterior structures of the heart, particularly the left atrium, mitral valve, and aorta. Nuclear cardiology uses radioactive tracers to provide assessment of myocardial perfusion and metabolism, along with ventricular function, and is applied primarily to the evaluation of patients with ischemic heart disease. Cardiac MRI and CT can delineate cardiac structure and function with high resolution. They are particularly useful in the examination of cardiac masses, the pericardium, the great vessels, and ventricular function and perfusion. Gadolinium enhancement during cardiac MRI adds information on myocardial perfusion. Detection of coronary calcification by CT as well as direct visualization of coronary arteries by CT angiography..."
The content above is only an excerpt.
For full access, log into an existing user account below,
purchase an annual subscription, or
purchase a short-term subscription to the complete website.
|
|
|
|
Or
|
|
|
|