Chest and abdomen. Computed tomography (CT) scans of the bones and internal organs of a human chest and abdomen. The 3D scan at left shows the heart, ribs, kidneys and major thoracic and abdominal blood vessels, including the aorta, the body's major artery. The spine and pelvis and hip bones are also shown. At right, the sectioned 3D scan shows a relatively thin vertical frontal (coronal) section through the torso in a plane that includes the heart.