The Evaluation Of MR Susceptibility Weighted Imaging In Intracranial Hemorrhage

Objective Study the imaging findings of intracranial hemorrhage in the SWI sequence to assess the SWI for the value of diagnosing intracranial hemorrhage. Methods Select 61 cases of patients with intracranial hemorrhage caused by different reasons, scan using the German SIEMENS Avanto 1.5T superconductive magnetic resonance scanner; which included conventional T1WI, T2WI, FLAIR, and SWI. Through the machine's own software automatically to produce SWI imaging and minimum intensity projection MinIP-SWI. Comparison of different methods for the detection of intracranial hemorrhage cases and the number of lesions, using the measuring software to measure and calculate the bleeding area in conventional MR sequences and SWI sequence for each patient with intracerebral hemorrhage (unit mm2), using SPSS 13.0 software for data processing; Count the number of microbleeds; SWI was Compared with conventional MR sequences in the diagnosis of intracerebral hemorrhage disease on the above aspects. Results Most of the lesions with intracranial hemorrhage in the SWI sequence showed low signal, MinIP-SWI can observe vein in the brain parenchyma; The number of lesion detection in intracerebral hemorrhage was obviously more in SWI than in conventional MR sequences; Compared SWI with conventional MR of the lesions (cavernous angioma, hypertensive intracerebral hemorrhage, contusion and laceration of brain), there was statistical difference in the bleeding area, SWI shows the larger bleeding area than conventional MR sequences; SWI can find more microbleeds than conventional MR; SWI sequences can be sensitive to show hemorrhage in the infarct. Conclusion SWI is sensitive to visualize the hemorrhagic region, and has predominant advantage over conventional MR sequences in detecting intracranial hemorrhage, especially cerebral microbleeding.