PT  - JOURNAL ARTICLE
AU  - Matsushige, T.
AU  - Chen, B.
AU  - Ringelstein, A.
AU  - Umutlu, L.
AU  - Forsting, M.
AU  - Quick, H.H.
AU  - Sure, U.
AU  - Wrede, K.H.
TI  - Giant Intracranial Aneurysms at 7T MRI
AID  - 10.3174/ajnr.A4569
DP  - 2016 Apr 01
TA  - American Journal of Neuroradiology
PG  - 636--641
VI  - 37
IP  - 4
4099  - http://www.ajnr.org/content/37/4/636.short
4100  - http://www.ajnr.org/content/37/4/636.full
SO  - Am. J. Neuroradiol.2016 Apr 01; 37
AB  - SUMMARY: Giant intracranial aneurysms are rare vascular pathologies associated with high morbidity and mortality. The purpose of this in vivo study was to assess giant intracranial aneurysms and their wall microstructure by 7T MR imaging, previously only visualized in histopathologic examinations. Seven giant intracranial aneurysms were evaluated, and 2 aneurysms were available for histopathologic examination. Six of 7 (85.7%) showed intraluminal thrombus of various sizes. Aneurysm walls were depicted as hypointense in TOF-MRA and SWI sequences with excellent contrast ratios to adjacent brain parenchyma (range, 0.01–0.60 and 0.58–0.96, respectively). The triple-layered microstructure of the aneurysm walls was visualized in all aneurysms in TOF-MRA and SWI. This could be related to iron deposition in the wall, similar to the findings in 2 available histopathologic specimens. In vivo 7T TOF-MRA and SWI can delineate the aneurysm wall and the triple-layered wall microstructure in giant intracranial aneurysms.GAgiant intracranial aneurysmSEMstandard error of the mean