Abstract
Since the 1980s, the implementation of fast imaging methods and dedicated
hardware for MRI scanners has reduced the image acquisition time
from nearly an hour down to several seconds and has therefore enabled
a widespread use of MRI in clinical diagnosis. Since this development,
the greatest incremental gain in imaging speed has been provided
by the development of parallel MRI (pMRI) techniques in late 1990s.
Within the past 2 years, parallel imaging methods have become commercially
available, which means that pMRI is now available for broad clinical
use. In the clinical routine, virtually any MRI method can be enhanced
by pMRI, allowing faster image acquisitions without any increased
gradient system performance. In some cases pMRI can even result in
a significant gain in image quality due to this faster acquisition.
In this review article, the advantages and the disadvantages of pMRI
in clinical applications are discussed and examples from many different
daily applications are given.
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