Head and torso. Colour-converted sagittal magnetic resonance imaging (MRI) scan of a human head and torso, showing the brain, chest cavity and spine. The image plane passes vertically through the centre of the body, with the front of the body at left. In the head, the brain's cerebrum (green) surrounds the midbrain structures (blue, orange and pink). The brainstem (yellow) becomes the spinal cord (yellow), which is encased by the vertebrae (orange) of the spine. The intervertebral discs (green) and the cerebellum (red, at the rear and base of the brain) are also shown. This image includes additional 3D accentuation of the spinal vertebrae and aorta (red, next to spine, lower left).