Recent Progress of the Clinical Application of Susceptibility Weighted Imaging

Susceptibility-weighted imaging(SWI)is a newly developed technology of magnetic resonance imaging in recent years.Unlike conventional spin echo sequence,it is sensitive to show the material with different magnetic susceptibility,and it has many advantages of high resolution,three-dimensional acquisition etc..Therefore,it has a high value to intracerebral microbleeds,calcification,vascular malformations,brain tumors,iron deposition and the related diseases,especially advantageous in display of small lesions.Here is to make a review on the basic principles of SWI sequence and progress in the application in the central nervous system and make an outlook to the prospects of this sequence.