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• Clinical Article •
The diagnosis value of susceptibility-weighted imaging in cerebral ischemic stroke
JIA Su-lan  WANG Xiao-ming 

DOI:10.3969/j.issn.1674-8034.2015.03.005.


[Abstract] Objectives: To explore the diagnosis value of susceptibility-weighted imaging (SWI) in cerebral ischemic stroke.Materials and Methods: Thirty cases with acute infarction were imaged with conventional MRI, DWI and SWI. Twenty of thirty cases were examined with MRA 19 cases were examined with postcontrast MRI after injection of Gd-DTPA. The raw data of SWI were transferred to the advantage workstations AW 4.4 which were generated the corrected phase image (CPI) and the minimum intensity projection. The corrected phase (CP) values were obtained manually at the infarction or edema and control regions.Results: Thirty cases with acute infarction were shown hyper-intensity on DWI. 15 cases were shown stenosis or occlusion of anterior cerebral artery middle cerebral artery (MCA) and posterior cerebral artery on MRA. Five cases showed right MCA clots consisted with the broken region of MRA on SWI. SWI showed hemorrhage of 21 in 30 cases (while CT, n=9. Only T1WI, n=2). 24 cases showed abnormal cerebral veins distribution in infarction area (increased in 15 cases, decreased in 9 cases). The average CP values of the infarction and the control area were -0.021±0.006 and -0.006±0.005, respectively (t =2.167, P<0.05). The average CP values of the edema and the control area were -4.853±0.005 and -1.868±0.003, respectively (t=-2.172, P<0.05).Conclusions: SWI has more predominant advantages than conventional MRI in detecting cerebral infarction accompanying hemorrhage and vein structure. And the corrected phase image (CPI) can be quantitatively analyzed.
[Keywords] Cerebral ischemic stroke；Magnetic resonance imaging

JIA Su-lan Department of Radiology, Beijing Daxing District people's Hospital, Beijing 102600, China

WANG Xiao-ming* Department of Radiology, Shengjing Hospital, China Medical University, Shenyang 110004, China

*Corespondence to: Wang Xiao-ming, E-mail: wangxm024@163.com

Conflicts of interest   None.

Received  2014-07-12
Accepted  2014-12-19
DOI: 10.3969/j.issn.1674-8034.2015.03.005
DOI:10.3969/j.issn.1674-8034.2015.03.005.

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