Abstract
Objectives
To assess the detectability of vasculitic changes of the superficial cranial arteries with contrast-enhanced 7 T MRI in three patients with GCA and intraindividual comparison with 3 T MRI.
Methods
Three patients (two female, one male) with suspected GCA underwent contrast-enhanced T1-weighted high-resolution MRI at 3 T and 7 T magnetic field strength. The clinical diagnosis, based on criteria of the American College of Rheumatology, was confirmed by biopsy of the superficial temporal artery after MRI. MR images were visually assessed for detection of vasculitic mural contrast enhancement and vessel wall thickening of the superficial cranial arteries.
Results
Both 3 T and 7 T MRI allows for visualisation of mural inflammatory changes and assessment of the vasculitic involvement pattern. Image quality of 7 T MRI was rated superior to image quality of 3 T MRI scans.
Conclusions
7 T MR imaging of vasculitic changes in patients with GCA is possible, and suggests superior image quality. Larger patient studies are necessary to quantify the diagnostic advantages of 7 T MRI.
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Dr. Bley receives ongoing research support from the “Deutsche Forschungsgemeinschaft, DFG” for MRI research.
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Dr. Bley had past consulting activities for HeartFlow, GSK, and MSD, and received past payments for lectures from Bayer, Bracco, HeartFlow, Guerbet, and Siemens. Beyond this, all authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge, or beliefs) in the subject matter or materials discussed in this manuscript.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
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Informed consent was obtained from all individual participants included in the study.
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Goll, C., Thormann, M., Hofmüller, W. et al. Feasibility study: 7 T MRI in giant cell arteritis. Graefes Arch Clin Exp Ophthalmol 254, 1111–1116 (2016). https://doi.org/10.1007/s00417-016-3337-7
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DOI: https://doi.org/10.1007/s00417-016-3337-7