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.
Disability Information and Travel Outside the Home. According to the 2000 decennial census, approximately 49.5 million people (19 percent) of the U.S. resident (noninstitutionalized) population aged 5 years or older have a disability (see figure 1).f those people with disabilities who leave the home the most  five to seven days per week  14 percent need assistance to travel outside the home, and 8 percent have problems getting the transportation they need.