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KMID : 1103720150730010026
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Journal of the Korean Society of Radiology
2015 Volume.73 No. 1 p.26 ~ p.35
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Utility of Two Types of MR Cisternography for Patency Evaluation of Aqueduct and Third Ventriculostomy Site: Three Dimensional Sagittal Fast Spin Echo Sequence and Steady-State Coherent Fast Gradient Echo Sequence
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Park Jung-Hyun
Kim Eun-hee
Park Jong-Bin
Kim Jae-Hyoung
Choi Byung-Se
Jung Cheol-Kyu
Bae Yun-Jung
Lee Kyung-Mi
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Abstract
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Purpose
We aimed to evaluate the utility of two types of MR cisternography [fast spin echo sequence and steady-state coherent gradient echo (GRE) sequence] in addition to phase contrast-cine imaging (PC-cine), for assessing patency at the aqueduct and third ventriculostomy site.
Materials and Methods
43 patients (35 patients with suspected aqueductal stenosis and 8 patients with third ventriculostomy) were retrospectively analyzed. PC-cine, 3 dimensional sagittal fast spin echo sequence [driven-equilibrium imaging (DRIVE) or volumetric isotrophic T2-weighted acquisition (T2 VISTA)] and steady-state coherent fast GRE sequence (balanced turbo field echo; bTFE) imaging were performed in all patients. The patency of the aqueduct or third ventriculostomy site was scored. Some pitfalls of each sequence were also analyzed in individual cases.
Results
93% of all cases showed consistent scores in PC-cine, DRIVE/T2 VISTA, and bTFE imaging. DRIVE/T2 VISTA imaging provided functional information of cerebrospinal fluid flow with flow-related artifacts, while bTFE imaging allowed direct visualization of the aqueduct or ventriculostomy site. However, evaluation of anatomical structures was difficult in three cases with strong flow-related artifacts on DRIVE/T2 VISTA and in 2 cases with susceptibility artifacts on bTFE.
Conclusion
Both DRIVE/T2 VISTA and bTFE imaging have complementary roles in evaluating the patency of the aqueduct and 3rd ventriculostomy site.
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KEYWORD
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Aqueductal Stenosis, Third Ventriculostomy, Volumetric Isotrophic T2-Weighted Acquisition, Driven-Equilibrium Imaging, Balanced Turbo Field Echo
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