Why the study?
Does cardiac rotation explain a normal cardiothoracic ratio on chest roentgenography in patients with dilated cardiomyopathy?
Does cardiac rotation explain a normal cardiothoracic ratio on chest roentgenography in patients with dilated cardiomyopathy?
A normal cardiac silhouette on chest X-ray in patients with dilated cardiomyopathy can occur due to counterclockwise transverse rotation of the heart and does not rule out left ventricular dilatation.
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Rotation may mask LV dilatation on X-ray in DCM; hypothesis-generating and requires prospective validation before clinical use.
Kono et al. (1992) studied this question.
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