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Feasibility of flat panel detector computed tomography for position assessment of external ventricular drainage
Affiliations- Departmentof Neuroradiology, Universitätsmedizin Göttingen, Germany
- Department of Diagnostic Radiology, Faculty of Medicine, Mansoura University, Egypt, Egypt
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Abstract
New angiographic devices with flat panel detectors allow cross-sectional imaging within the angiographic suite. In patients receiving external ventricular drainage (EVD) to manage hydrocephalus following subarachnoid haemorrhage (SAH), these may help evaluating the position of an EVD without moving the patient to a conventional computed tomography (CT) scanner. It could facilitate patients’ management in a life-threatening status. This study therefore compares conventional CT with post-inter-ventional flat panel detector angiographic CT (FDCT) referring to the determinability of an accurate EVD position.
Material and methodsTwenty patients with SAH received FDCT and conventional CT for primary assessment after EVD insertion. Three single-blinded raters compared both modalities and evaluated the image sufficiency for determining the EVD position, EVD tip, intracranial course and whether a contorted drainage tube could be detected.
ResultsFDCT was sufficient to detect a correct EVD position in 82.5% of the cases vs. 100% in conventional CT. Regarding the EVD tip, FDCT delivered at least ‘good’ results in 82.5% vs. 95% in conventional CT data. Determining the EVD intracranial course, FDCT provided at least ‘good’ data in 92.5% vs. 100% in conventional CT. For detecting tube contortion, FDCT provided at least ‘good’ results in 70% vs. 98% in conventional CT.
ConclusionsFDCT is a promising method to determine the correct position of an EVD in patients with SAH. Following a neuroradiological intervention, it facilitates the patients’ management and renders additional transfers to conventional CT unnecessary in the majority of cases.
Abstract
New angiographic devices with flat panel detectors allow cross-sectional imaging within the angiographic suite. In patients receiving external ventricular drainage (EVD) to manage hydrocephalus following subarachnoid haemorrhage (SAH), these may help evaluating the position of an EVD without moving the patient to a conventional computed tomography (CT) scanner. It could facilitate patients’ management in a life-threatening status. This study therefore compares conventional CT with post-inter-ventional flat panel detector angiographic CT (FDCT) referring to the determinability of an accurate EVD position.
Material and methodsTwenty patients with SAH received FDCT and conventional CT for primary assessment after EVD insertion. Three single-blinded raters compared both modalities and evaluated the image sufficiency for determining the EVD position, EVD tip, intracranial course and whether a contorted drainage tube could be detected.
ResultsFDCT was sufficient to detect a correct EVD position in 82.5% of the cases vs. 100% in conventional CT. Regarding the EVD tip, FDCT delivered at least ‘good’ results in 82.5% vs. 95% in conventional CT data. Determining the EVD intracranial course, FDCT provided at least ‘good’ data in 92.5% vs. 100% in conventional CT. For detecting tube contortion, FDCT provided at least ‘good’ results in 70% vs. 98% in conventional CT.
ConclusionsFDCT is a promising method to determine the correct position of an EVD in patients with SAH. Following a neuroradiological intervention, it facilitates the patients’ management and renders additional transfers to conventional CT unnecessary in the majority of cases.
Keywords
flat panel detector CT, external ventricular drainage, hydrocephalus, cerebral angiography
About this articleTitle
Feasibility of flat panel detector computed tomography for position assessment of external ventricular drainage
Journal
Neurologia i Neurochirurgia Polska
Issue
Pages
32-42
Page views
352
Article views/downloads
355
DOI
10.5114/ninp.2013.32996
Bibliographic record
Neurol Neurochir Pol 2013;47(1):32-42.
Keywords
flat panel detector CT
external ventricular drainage
hydrocephalus
cerebral angiography
Authors
Philipp von Gottberg
Marios Psychogios
Gunther Schuetze
Joseph Cohnen
Paul Zwaka
Michael Knauth
Peter Schramm
