OtherBRAIN
Black Holes on MR Images of the Brain of Patients with Björk-Shiley Heart Valves: Additional Observation in Three Cases
Maarten J. van Gorp, Bas A.J.M. de Mol, Chris J.G. Bakker, Yolanda van der Graaf and Willem P.T.M. Mali
American Journal of Neuroradiology March 2003, 24 (3) 512-514;