Fig. 1 | Scientific Reports

Fig. 1

From: Differences in lung attenuation gradients between supine and standing positions in healthy participants on conventional/supine and upright computed tomography

Fig. 1

Reconstructed lung field computed tomography (CT) images and representative measurements in a healthy participant. These images have been obtained from a 57-year-old man. The figure panels show axial images at the level of the aortic arch (A), right inferior pulmonary vein (B), and just above the diaphragm on both sides (C), and sagittal images (D) acquired in the supine and standing positions. The attenuation gradient of the lungs was calculated by drawing a straight line (yellow line) in the lung field at each measurement point. The major or minor fissures are indicated by a white dotted line in the lung field. A graph of the lung attenuation gradient is shown on the right. The upper and lower sides represent the raw and filtered data, respectively.

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