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AJNR - American Journal of Neuroradiology

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Clinical Evaluation of Cellulose Porous Beads for the Therapeutic Embolization of Meningiomas

Y. Kai^a, J.-I. Hamada^a, M. Morioka^a, S. Yano^a, H. Nakamura^a, K. Makino^a, T. Mizuno^a, H. Takeshima^a and J.-I. Kuratsu^b

^a Department of Neurosurgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
^b Department of Neurosurgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan

View larger version (17K): [in a new window]   Fig 1. Algorithm for patient selection.

View larger version (12K): [in a new window]   Fig 2. Graph showing the relationship between the ratio of nonenhanced lesions on postembolization MR imaging scans the degree of devascularization of external carotid artery feeders. The regression line obtained by applying simple regression is shown (y = 0.1437x + 29.994; R2 = .0162).

View larger version (49K): [in a new window]   Fig 3. A, Pre-embolization Gd-DTPA-enhanced T1-weighted MR imaging scan showing a well-enhanced lesion in the right medial frontal area. B, Three days after embolization, the enhanced MR imaging scan shows a heterogeneous nonenhanced lesion in the tumor. C, Seven days postembolization, the nonenhanced lesion in the tumor was not remarkably changed.

View larger version (21K): [in a new window]   Fig 4. Bar graph showing the relationship between the ratio of supply from the external carotid artery and tumor consistency at surgery.

View larger version (23K): [in a new window]   Fig 5. Bar graph showing the relationship between the ratio of nonenhanced lesions on postembolization MR imaging and tumor consistency at surgery. *P < .01.