Phase-contrast cine MRI versus MR cisternography on the evaluation of the communication between intraventricular arachnoid cysts and neighbouring cerebrospinal fluid spaces |
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Authors: | Oktay Alg?n Bahattin Hakyemez Gokhan Gokalp Ender Korfal? Muf?t Parlak |
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Institution: | (1) Department of Radiology, Uludag University School of Medicine, Bursa, Turkey;(2) Department of Neurosurgery, Uludag University School of Medicine, Bursa, Turkey |
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Abstract: | Introduction The objective of this study was to evaluate the role of phase-contrast cine magnetic resonance imaging (PC-MRI) in detecting
possible communications between intraventricular arachnoid cysts (IV-ACs) and cerebrospinal fluid (CSF) spaces based on MR
cisternography (MRC) comparison.
Materials and methods Twenty-one patients with IV-AC were examined by PC-MRI and MRC. In order to determine the communication of IVAC with its neighbouring
CSF spaces, PC-MRI was employed. The communication of IV-ACs with the ventricular system was examined on at least two anatomic
planes. Precontrast images and PC-MRI were followed by the intrathecal administration of 0.5–1 ml gadopentetate dimeglumine.
Early and delayed MRC were then carried out. Results of PC-MRI were compared with findings of MRC (McNemar’s test).
Results In seven IV-ACs, no communication was detected by PC-MRI. In 14 IVACs, a pulsatile CSF flow into the IV-ACs was observed.
All the IV-ACs, which have been determined as non-communicating (NC) on the PC-MRI, showed NC character on MRC as well. Six
cases suggesting a communication on PC-MRI showed no communication on MRC. MRC revealed eight communicating (38%) and 13 NC
(62%) IV-ACs among a total of 21 cases. The sensitivity and specificity of PC-MRI imaging in demonstrating the communication
between the IV-ACs and the CSF were 100% and 54%, respectively.
Conclusion PC-MRI is an effective method for evaluating NC IV-ACs. In order to decide about the management of IV-ACs, which are communicating
according to the PC-MRI, the results should be confirmed with MRC if suspected jet flow is depicted. |
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Keywords: | Arachnoid cyst Magnetic resonance imaging MR cisternography Ventricular PC cine MR Cerebrospinal fluid |
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