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Case Reports
. 1992;34(2):162-7.
doi: 10.1007/BF00588165.

MRI changes in embolized meningiomas

T Terada  1 , Y Nakamura, M Tsuura, K Miyamoto, K Nakai, T Nishiguchi, S Hayashi, N Komai
Affiliations
Case Reports

MRI changes in embolized meningiomas

T Terada et al. Neuroradiology. 1992.

Abstract

Study of the MRI changes that occur after superselective embolization of hypervascular meningiomas with Gelfoam powder (5 cases) and polyvinyl alcohol (PVA) particles 150-250 microns in size (4 cases) has indicated that, after embolization, meningiomas showed loss of the signal void, decrease in gadolinium-DTPA contrast enhancement, and prolonged T1 and T2. Shortening of T1 and T2 was seen in two patients with Gelfoam-embolized meningiomas in whom CT showed pooling of iodinated contrast medium in the tissue. In vitro experimental data demonstrated that the shortening of T1 and T2 was due to the iodinated contrast medium.

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