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.
In the ten years up to the start of the financial crisis, house prices tripled. Many people think this is because there were not enough houses around, but that is only part of the picture. A major cause of the rise was that banks have the ability to create money every time they make a loan.