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7 Tesla MRA for the differentiation between intracranial aneurysms and infundibula
Leiden University, Leiden University Medical Center, Leiden, The Netherlands.
Leiden University, Leiden University Medical Center, Leiden, The Netherlands.
Umeå University, Faculty of Medicine, Department of Radiation Sciences, Radiation Physics. Leiden University, Leiden University Medical Center, Leiden, The Netherlands.ORCID iD: 0000-0002-0532-232X
Leiden University, Leiden University Medical Center, Leiden, The Netherlands.
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2017 (English)In: Magnetic Resonance Imaging, ISSN 0730-725X, E-ISSN 1873-5894, Vol. 37, 16-20 p.Article in journal (Refereed) Published
Place, publisher, year, edition, pages
2017. Vol. 37, 16-20 p.
Keyword [en]
Intracranial aneurysms, Infundibula, High resolution MRA, 7 Tesla, Time-of-flight MRA
National Category
Radiology, Nuclear Medicine and Medical Imaging
Research subject
Radiology
Identifiers
URN: urn:nbn:se:umu:diva-135669DOI: 10.1016/j.mri.2016.11.006OAI: oai:DiVA.org:umu-135669DiVA: diva2:1104884
Note

Abstract

Objective

The differentiation between an aneurysm and an infundibulum with time-of-flight MRA is often difficult. However, this distinction is important because it affects further patient follow-up. The purpose of this study was to assess the added value of high resolution 7 Tesla MRA for investigating small vascular lesions suspect for an aneurysm or an infundibulum.

Materials and methods

We included patients in whom an intracranial vascular lesion was detected in our University Hospital and in whom the discrimination between a true aneurysms or an infundibulum could not be made on conventional 1.5 or 3 T MRI were included in the study. All patients underwent an additional 7 T time-of-flight MRA at higher spatial resolution.

Results

We included 6 patients. The age range of the patients was 35–65 years and 5 of them were women. 1 out of 6 had a 1.5 T MRI, the other 5 patients had a 3 T MRI previous to the 7 T MRI. The lesion size varied between 0.9 mm and 2.0 mm. In 5 of the 6 patients the presence of an infundibulum could be proven using the high resolution of the 7 T MRA. All patients tolerated the 7 T MRI well.

Conclusion

Our results suggest that high resolution and contrast of 7 T MRA provides added diagnostic value in discriminating between intracranial aneurysms and infundibula. This finding may have important consequences for patient follow-up and comfort because it might reduce unnecessary follow-up exams and decrease uncertainty about the diagnosis. Larger studies, however, are needed to confirm our findings.

Available from: 2017-06-02 Created: 2017-06-02 Last updated: 2017-06-02

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Publisher's full texthttps://doi.org/10.1016/j.mri.2016.11.006

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Citation style
  • apa
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