scholarly journals Phase contrast MRI measurements of net cerebrospinal fluid flow through the cerebral aqueduct are confounded by respiration

2018 ◽  
Vol 49 (2) ◽  
pp. 433-444 ◽  
Author(s):  
Jolanda M. Spijkerman ◽  
Lennart J. Geurts ◽  
Jeroen C.W. Siero ◽  
Jeroen Hendrikse ◽  
Peter R. Luijten ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Fluid Flow ◽  
Phase Contrast ◽  
Cerebral Aqueduct ◽  
Phase Contrast Mri ◽  
Cerebrospinal Fluid Flow ◽  
Flow Through ◽  
Mri Measurements

scholarly journals Inter- and intra-rater reliability of blood and cerebrospinal fluid flow quantification by phase-contrast MRI

2013 ◽  
Vol 38 (3) ◽  
pp. 655-662 ◽  
Author(s):  
Inga Koerte ◽  
Caroline Haberl ◽  
Michael Schmidt ◽  
Andreas Pomschar ◽  
Sang Lee ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Fluid Flow ◽  
Phase Contrast ◽  
Flow Quantification ◽  
Phase Contrast Mri ◽  
Rater Reliability ◽  
Cerebrospinal Fluid Flow

Why does endoscopic aqueductoplasty fail so frequently? Analysis of cerebrospinal fluid flow after endoscopic third ventriculostomy and aqueductoplasty using cine phase-contrast magnetic resonance imaging

2012 ◽  
Vol 117 (1) ◽  
pp. 141-149 ◽  
Author(s):  
Christiane Schroeder ◽  
Steffen Fleck ◽  
Michael R. Gaab ◽  
Klaus H. Schweim ◽  
Henry W. S. Schroeder
Keyword(s):  
Cerebrospinal Fluid ◽  
Fluid Flow ◽  
Phase Contrast ◽  
Endoscopic Third Ventriculostomy ◽  
Aqueductal Stenosis ◽  
Third Ventriculostomy ◽  
Csf Flow ◽  
Cerebrospinal Fluid Flow ◽  
Flow Through ◽  
Endoscopic Aqueductoplasty

Object The aim of this study was to evaluate and compare CSF flow after endoscopic third ventriculostomy (ETV) and endoscopic aqueductoplasty (EAP) in patients presenting with obstructive hydrocephalus caused by aqueductal stenosis. Methods In patients harboring aqueductal stenosis who underwent EAP (n = 8), ETV (n = 8), and both ETV and EAP (n = 6), CSF flow through the restored aqueduct and through the ventriculostomy was investigated using cine cardiac-gated phase-contrast MRI. For qualitative evaluation of CSF flow, an in-plane phase-contrast sequence in the midsagittal plane was used. The MR images were displayed in a closed-loop cine format. Quantitative through-plane measurements were performed in the axial plane perpendicular to the aqueduct and/or floor of the third ventricle. Results Evaluation revealed significantly higher CSF flow through the ventriculostomies compared with flow through the aqueducts. This was true both when comparing the ETV group with the EAP group and when comparing the flow of the ventriculostomy and aqueduct within the ETV and EAP group. There was no difference in aqueductal CSF flow between patients who underwent EAP alone and patients who underwent ETV and EAP. There was also no difference in ventriculostomy CSF flow between patients who underwent ETV alone and patients who underwent ETV and EAP. Fifty percent of the restored aqueducts became occluded at a mean of 46 months after surgery (range 18–126 months). In contrast, all ETVs remained patent in the mean follow-up period of 110 months after surgery, although 1 patient required shunt placement after 66 months. Conclusions Cerebrospinal fluid flow through ventriculostomies is significantly higher than aqueductal CSF flow after EAP. This could be one factor to explain why the reclosure rate of aqueducts after EAP is higher than the reclosure rate of the ventriculostoma after ETV.

scholarly journals Cerebrospinal fluid flow dynamics in Huntington's disease evaluated by phase contrast MRI

2019 ◽  
Vol 49 (12) ◽  
pp. 1632-1639
Author(s):  
Filipe B. Rodrigues ◽  
Lauren M. Byrne ◽  
Enrico De Vita ◽  
Eileanoir B. Johnson ◽  
Nicola Z. Hobbs ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Fluid Flow ◽  
Huntington's Disease ◽  
Huntington’S Disease ◽  
Phase Contrast ◽  
Flow Dynamics ◽  
Phase Contrast Mri ◽  
Cerebrospinal Fluid Flow
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