HomeRadiologyVol. 231, No. 2 PreviousNext Signs in ImagingThe Tram-Track Sign: Cortical CalcificationsErhan AkpinarErhan AkpinarAuthor Affiliations1From the Department of Radiology, Hacettepe University, 06100 Sihhiye, Ankara, Turkey. Received May 10, 2002; revision requested July 24; final revision received December 2; accepted December 20. Address correspondence to the author (e-mail: [email protected]).Erhan AkpinarPublished Online:May 1 2004https://doi.org/10.1148/radiol.2312020545MoreSectionsFull textPDF ToolsImage ViewerAdd to favoritesCiteTrack CitationsPermissionsReprints ShareShare onFacebookTwitterLinked In References 1 Smirniotopoulos JG, Murphy FM. The phakomatoses. AJNR Am J Neuroradiol 1992; 13:725-746. Medline, Google Scholar2 Boyer RS. Disorders of histogenesis: neurocutaneous syndromes. In: Osborn AG, eds. Diagnostic neuroradiology. St Louis, Mo: Mosby, 1994; 72-113. Google Scholar3 Case 119. In: Fischebein NJ, Dillon WP, Barkovich AJ, eds. 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