مقاله تصویربرداری غیر تهاجمی قلبی به زبان انگلیسی

مقاله تصویربرداری غیر تهاجمی قلبی به زبان انگلیسی

Non-invasive Cardiac Imaging - Janet Wong, M.D.

چکیده:

The chest X-ray provides information about the size and configuration of the heart and great vessels, as well as pulmonary vasculature, and pleural effusions. Cardiac chamber dilation, rather than wall thickening is generally perceived as an alteration in cardiac silhouette. Routinely posteroanterior (PA) and lateral chest films are obtained. Enlargement of the fight atrium may cause bulging of the heart to the fight on the PA film, while fight ventricular enlargement is generally perceived as a filling of the anterior clear space on the lateral film. Left atrial enlargement may be detected by an upward displacement of the left main-stem bronchus, or posterior displacement of the barium filled esophagus on lateral films. Left ventricular enlargement is the most common finding on chest x-ray, generally results in an increased cardiothoracic ratio (>  0.50). Pericardial effusions may be suspected by an enlarged cardiac silhouette with "water bottle" appearance. Fluoroscopy, more often performed in the cardiac catheterization suite, generally confirms minimal motion of cardiac borders. Fluoroscopy is also more sensitive for detection of cardiac valve calcium as well as epicardial calcium (see cine CT). The chest x-ray is also helpful to demonstrate upper zone redistribution, pleural effusions, and Kerley B-lines indicative of congestive heart failure.

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