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.
Great Recession. the financial crisis that commenced in 2007 and its aftermath have been widely referred to. as the âGreat recessionââand with good reason. From its beginning until its nadir in 2009, it was responsible for the destruction of nearly $20 trillion worth of financial assets owned by. U.S. households.