Axial MRI scans of the heart and lungs of a healthy 28_year_old woman. The back of the body and spine bright circle is at bottom, and the scans move up from the diaphragm to the tops of the lungs. The heart blue is prominent in the chest, surrounded by the lungs, which appear black. The branching bronchi within the lungs are blue. Mastered from originals duration 00:00:00:20, frame size 1604x1057, 1 fps.