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• W3195982452 abstract "<h3>Introduction</h3> The majority of unruptured intracranial aneurysms (UIA) can be adequately characterized using 1.5 and 3 T MRI. However, findings in a relevant subgroup of patients can remain unclear due to difficulties in distinguishing aneurysms from vascular anatomical variants.^1–47 T MRI may provide definitive non-invasive diagnosis in this subgroup of patients due to a higher signal-to-noise ratio, higher spatial resolution and vessel contrast.^5–7 <h3>Aim of the Study</h3> Report on the integration of 7 T MR neurovascular imaging in the clinical routine to provide definitive, non-invasive discrimination of intracranial aneurysm versus normal vascular variants. <h3>Methods</h3> We retrospectively analyzed clinical data from patients with suspected incidental UIAs on 3T MRI who underwent 7 T MRI. All patients were scanned within diagnostic work-up or follow-up on an clinically approved 7 T whole-body MR scanner with a 32-channel head coil and had a recent scan on a 3 T scanner with a 32-channel standard head coil. <h3>Results</h3> We identified 39 patients who received 7 T MRI. All examinations were performed without interruption or side effects. All images fulfilled criteria of diagnostic quality within routine image reading. No ambiguous findings remained after UHF 7 T MRI and a definitive diagnosis was made according to the analyzed reports. <h3>Conclusions</h3> Clinical implementation of 7 T MRI in patients with suspected small incidental UIAs has the potential to reduce the number of ambiguous vascular findings, secure the diagnosis, reduce the invasive imaging work-up and has therefore an impact on patient management. <h3>References</h3> Okahara M, <i>et al</i>. Diagnostic accuracy of magnetic resonance angiography for cerebral aneurysms in correlation with 3D-digital subtraction angiographic images: a study of 133 aneurysms. <i>Stroke</i> 2002;<b>33</b>(7):1803–8. Li MH, <i>et al</i>. Accurate diagnosis of small cerebral aneurysms ≤5 mm in diameter with 3.0-T MR angiography. <i>Radiology</i> 2014;<b>271</b>(2):553–60. Wrede KH, <i>et al</i>. Non-enhanced MR imaging of cerebral aneurysms: 7 Tesla versus 1.5 Tesla. <i>PLoS One</i> 2014;<b>9</b>(1):e84562. Monninghoff C, <i>et al</i>. Evaluation of intracranial aneurysms with 7 T versus 1.5 T time-of-flight MR angiography – initial experience. <i>Rofo</i> 2009;<b>181</b>(1):16–23. <h3>Disclosure</h3> A. Joseph and G. Bonanno are employed by Advanced Clinical Imaging Technology, Siemens Healthcare AG, Bern, Switzerland." @default.
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• W3195982452 date "2021-08-01" @default.
• W3195982452 modified "2023-09-23" @default.
• W3195982452 title "EP35 7 T MR imaging of small incidental unruptured intracranial aneurysms: first year of clinical experience" @default.
• W3195982452 doi "https://doi.org/10.1136/neurintsurg-2021-esmint.34" @default.
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