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• Clinical Article •
MRI diagnosis of posterior reversible encephalopathy syndrome
ZHANG Cheng-zhou  WANG Ping  CHEN Liang  CAO Xin-shan  GUO Lan-tian  WANG Jing  LIU Quan-yuan  DONG Yan-jun 

DOI:10.3969/j.issn.1674-8034.2013.05.005.


[Abstract] Objective: To investigate the MRI findings of posterior reversible encephalopathy syndrome (PRES).Materials and Methods: The MRI datas of 16 patients were analyzed retrospectively. 16 cases were examined by MRI, 5 with MRV examination at the same time, 11 with systematic treatment were reviewed by MRI.Results: Lesions were multiple, 16 cases of the MRI scan detected 73 lesions, Most of them were located in the subcortical white matter. The lesions showed slightly hypointensity on T1WI and slightly hyperintensity on T2WI. Most often affected parietal-occipital lobe (88.5%), followed by frontal lobe (61.3%), cerebellum (31.3%), temporal lobe (30.1%), basal ganglia (28.7%) and brain stem (17.3%). 1 with multiple focal hemorrhage in the brain. Except the focal hemorrhage, other lesions showed slightly high signal on DWI, most of the lesions showed high signal on ADC map, Only one lesion in corpus callosum revealed hypointensity on ADC map. There were no abnormally findings in 5 MRV examinations. After treatment, 11 MRI showed significant lesion number decrease. Compared to the previous inspection [(1.036±0.186)× 10-3mm2/s], residual lesions' ADC values [(0.937±0.086)×10-3mm2/s] were decreased, and closer to the ADC values of normal brain [(0.832±0.078) ×10-3mm2/s).Conclusions: The MRI imaging of PRES is characterized, DWI and MRV have great significance for the diagnosis and differential diagnosis of PRES, and the follow up MRI scan of PRES after treatment has important value to the therapeutic effect.
[Keywords] Posterior reversible encephalopathy syndrome；Magnetic resonance imaging

ZHANG Cheng-zhou Depatment of Radiology, Hospital of Binzhou Medical College, Binzhou 256603, China

WANG Ping * Depatment of Radiology, Hospital of Binzhou Medical College, Binzhou 256603, China

CHEN Liang Depatment of Radiology, Hospital of Binzhou Medical College, Binzhou 256603, China

CAO Xin-shan Depatment of Radiology, Hospital of Binzhou Medical College, Binzhou 256603, China

GUO Lan-tian Depatment of Radiology, Hospital of Binzhou Medical College, Binzhou 256603, China

WANG Jing Depatment of Radiology, Hospital of Binzhou Medical College, Binzhou 256603, China

LIU Quan-yuan Depatment of Radiology, Hospital of Binzhou Medical College, Binzhou 256603, China

DONG Yan-jun Depatment of Radiology, Hospital of Binzhou Medical College, Binzhou 256603, China

*Correspondence to: Wang P, E-mail: p_wang8485@163.com

Conflicts of interest   None.

Received  2013-06-14
Accepted  2013-08-12
DOI: 10.3969/j.issn.1674-8034.2013.05.005
DOI:10.3969/j.issn.1674-8034.2013.05.005.

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