RT Journal Article
SR Electronic
T1 Suspected Metallic Embolism following Endovascular Treatment of Intracranial Aneurysms
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 1696
OP 1699
DO 10.3174/ajnr.A4804
VO 37
IS 9
A1 Yasuda, R.
A1 Maeda, M.
A1 Umino, M.
A1 Nakatsuka, Y.
A1 Umeda, Y.
A1 Toma, N.
A1 Sakaida, H.
A1 Suzuki, H.
YR 2016
UL http://www.ajnr.org/content/37/9/1696.abstract
AB SUMMARY: We describe a case series of suspected metallic embolism after coil embolization for intracranial aneurysms. Between January 2012 and December 2014, 110 intracranial aneurysms had been treated by coil embolization in our institution. In 6 cases, the postprocedural MR imaging revealed abnormal spotty lesions not detected on the preprocedural MR imaging. The lesions were also undetectable on the postprocedural CT scan. They were demonstrated as low-intensity spots on T1WI, T2WI, DWI, and T2*-weighted imaging. On DWI, they were accompanied by bright “halo,” and on T2*-weighted imaging, they showed a “blooming” effect. In 3 of the 6 cases, follow-up MR imaging was available and all the lesions remained and demonstrated no signal changes. Although histologic examination had not been performed, these neuroradiologic findings strongly supported the lesions being from metallic fragments. No specific responsible device was detected after reviewing all the devices used for the neuroendovascular treatment in the 6 cases.