Basilar Artery Hemodynamic Changes in Preeclamptic Posterior Reversible Encephalopathy Syndrome
Pages: 779-782
Year: 2017 Issue: 6
Journal: Journal of Clinical Radiology
Abstract: Objective To measure the preeclamptic (PE) basilar artery (BA) hemodynamic parameters on phase contrast magnetic resonance imaging (PCMRI),and to explore the differences between posterior reversible encephalopathy syndrome (PRES) and normal brain MRI patients.Methods 34 PE patients underwent conventional MRI scan,and were divided into PRES group and normal brain MRI group according to the results.Both groups underwent BA PCMRI.Using QFLOW software on the workstation for post-processing,the ROI was drawn along the edge of BA in the T1/FFE amplitude image.Basilar artery hemodynamic parameters and phase-velocity curve in a heartbeat cycle were obtained by automatic analysis software.BA vascular area,mean velocity (MV),mean flow (MF) and resistive index (RI) were recorded.The differences of BA hemodynamic parameters between the two groups were compared by SPSS17.0 software.Results RI of BA in PRES group was less than normal brain MRI group (t =5.61,P ＜0.05).Vascular area,MV,and MF of BA in PRES group were more than normal brain MRI group (t l =4.54,tMv =6.53,tMF =8.41;all P ＜ 0.01).Conclusion The blood perfusion of PE PRES BA is characterized by "low resistance and high discharge".BA transition blood flow perfusion is associated with the occurrence of PRES.
Year: 2017 Issue: 6
Journal: Journal of Clinical Radiology
Abstract: Objective To measure the preeclamptic (PE) basilar artery (BA) hemodynamic parameters on phase contrast magnetic resonance imaging (PCMRI),and to explore the differences between posterior reversible encephalopathy syndrome (PRES) and normal brain MRI patients.Methods 34 PE patients underwent conventional MRI scan,and were divided into PRES group and normal brain MRI group according to the results.Both groups underwent BA PCMRI.Using QFLOW software on the workstation for post-processing,the ROI was drawn along the edge of BA in the T1/FFE amplitude image.Basilar artery hemodynamic parameters and phase-velocity curve in a heartbeat cycle were obtained by automatic analysis software.BA vascular area,mean velocity (MV),mean flow (MF) and resistive index (RI) were recorded.The differences of BA hemodynamic parameters between the two groups were compared by SPSS17.0 software.Results RI of BA in PRES group was less than normal brain MRI group (t =5.61,P ＜0.05).Vascular area,MV,and MF of BA in PRES group were more than normal brain MRI group (t l =4.54,tMv =6.53,tMF =8.41;all P ＜ 0.01).Conclusion The blood perfusion of PE PRES BA is characterized by "low resistance and high discharge".BA transition blood flow perfusion is associated with the occurrence of PRES.
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