| Objective To study the clinical value of susceptibility weighted imaging (SWI) in brain diseases. Method 163 examples with brain diseases were collected and analyzed, including 44 examples of angioma cavernosum, 99 examples of cerebral infarction, 20 examples of brain tumor. Conventional T1WI and T2WI were performed ,the SWI was performed if necessary. the MRI findings were analyzed retrospectively, all patients were confirmed by clinical and pathology. To compare superiority of the SWI sequence to conventional MRI sequence in demonstrating the small hemorrhage stove, the small vein, hemosiderin, calcification and other paramagnetic material. Results SWI can distinguish the hemorrhage from the blood vessel and discover the smaller hemorrhage stoves of the angioma cavernosum. It can discover more tiny vein small vena cava drainage in . SWI can detected smaller hemorrhag in cerebral infarction,and draining veins in brain tumor. Conclusion SWI is a new pulse sequence that can demonstrate the abnormal low current capacity blood vessels, the structure of small vein, the tiny hemorrhage as well as ferrugination and calcium sensitively.So it can be applied in the diagnosis and antidiastole of the central nervous system diseases as an important supplement to the MRI conventional sequences.
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