An MRI is a test that uses a magnetic field and pulses of radio wave energy to make pictures of the spine. In many cases, an MRI gives different information than an X-ray, an ultrasound, or a CT scan. An MRI also may show problems that cannot be seen with other imaging tests.
Note: A general discussion of the causes of the subprime mortgage crisis is included in Subprime mortgage crisis, Causes and Causes of the 2007â2012 global financial crisis. This article focuses on a subset of causes related to affordable housing policies, Fannie Mae and Freddie Mac and government regulation.
a primary cause of the economic decline that began in the 1970s was. a decline in worker productivity. the severe inflation of the 1970's was largely caused by. lyndon johnson's effort to maintain the vietnam war and the great society programs without raising taxes. president nixon's vietnamization policy provided that. the united states would gradually withdraw ground troops while supporting the south vietnamese war effort.