BSIP, GONDELON / SCIENCE PHOTO LIBRARY BSIP, GONDELON / SCIENCE PHOTO LIBRARY
Heart pacemaker in a newborn baby, coloured 3D computed tomography (CT) scan. The pacemaker (seen at bottom centre) is relatively large compared to the size of the baby. This is a frontal view. The baby's heart is at centre right, with the lung cavities (yellow) at right and left. The ribs are also seen. A cardiac pacemaker supplies electrical impulses to keep the heart beating normally. An irregular heartbeat is an example of a condition that is commonly corrected by the use of a pacemaker. CT scanning uses X-rays to scan the body. Computers create a 3D image of the area scanned.
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