The cardiothoracic ratio aids in the detection of cardiomegaly, or more broadly, enlargement of the cardiac silhouette. It is measured on a PA chest x-ray, and is the ratio of:
Disability around the World: It's estimated that more than 1 billion people live with a disability. (United Nations, 2013) This represents the worldâs largest minority, and the only minority group that any of us can become a member of at any time.
According to the CIA World Fact book there are around 6,677 billion people living on the world in this year. 6.3 billion are estimated to be alive today. Scientists think that one out of every 7 people that ever lived is walking the Earth today. My Teacher the other day mentioned around 6.6 Billion people.