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AJNR - American Journal of Neuroradiology

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Hydroxyapatite Ceramics As a Particulate Embolic Material: Report of the Clinical Experience

Michiya Kubo^a, Naoya Kuwayama^a, Yutaka Hirashima^a, Akira Takaku^a, Tetsuro Ogawa^b and Shunro Endo^a

^a Department of Neurosurgery, Toyama Medical and Pharmaceutical University, Toyama, Japan
^b New Ceramics Division, Life Care Business Headquarters, PENTAX Corporation, Tokyo, Japan

View larger version (167K): [in a new window]   FIG 1. Hydroxyapatite microparticles (arrow) are seen in small arteries in meningioma with mild inflammatory response and lymphocytic infiltration in the perivascular spaces (hematoxylin and eosin; original magnification, x100).

View larger version (81K): [in a new window]   FIG 2. Superselective angiograms of the middle meningeal artery feeding a frontal parasagittal meningioma. A, Before embolization. B, Immediately after embolization with hydroxyapatite microparticles. The meningioma is angiographically devascularized.