A reliability study of colour-Doppler sonography for the diagnosis of chronic cerebrospinal venous insufficiency shows low inter-rater agreement. Leone MA, Raymkulova O, Lucenti A, Stecco A, Bolamperti L, Coppo L, Liboni W, Rivadossi G, Zaccala G, Maggio M, et al. BMJ Open. 2013; 3(11):e003508. PMID: 24240139. Abstract CommentRecommendBookmarkWatch