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Axial images of coronary CT angiography in the same patient as in Fig. 1 are shown. The attenuation numbers of the great arteries were 506 HU for the ascending aorta (AA), 256 HU for the main pulmonary artery (PA) (a), and 498 HU for the descending aorta (DA) at the level of the inferior margin of the heart as determined on axial images (b). The calculated consistency of contrast material was 8 HU.
