Fig. 2
From: Quantification of lung water in heart failure using cardiovascular magnetic resonance imaging
Rectangular profile method for imaging lung water density. The region of interest (10 mm × 180 mm) from which a profile signal intensity is calculated over a central slice in the right lung and liver. A sample signal intensity profile is shown on the right (arbitrary units), showing the relative signal intensities in the lung and liver, and as compared to a noise region, outside of the body