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PT  - JOURNAL ARTICLE
AU  - van Gorp, Maarten J.
AU  - de Mol, Bas A.J.M.
AU  - Bakker, Chris J.G.
AU  - van der Graaf, Yolanda
AU  - Mali, Willem P.T.M.
TI  - Black Holes on MR Images of the Brain of Patients with Björk-Shiley Heart Valves: Additional Observation in Three Cases
DP  - 2003 Mar 01
TA  - American Journal of Neuroradiology
PG  - 512--514
VI  - 24
IP  - 3
4099  - http://www.ajnr.org/content/24/3/512.short
4100  - http://www.ajnr.org/content/24/3/512.full
SO  - Am. J. Neuroradiol.2003 Mar 01; 24
AB  - Summary: We report the cases of three patients with Björk-Shiley convexo-concave heart valves with unusual black holes shown on cerebral MR images. For two patients, these findings were associated with fracture of the Björk-Shiley convexo-concave heart valve, and for the third, with worn surfaces on the heart valve. Susceptibility changes shown by MR imaging suggest the possibility that these black holes may be associated with microscopic metallic particles, although, the exact cause of these black holes remains undetermined.