Quantitative myocardial blush grade reserve during pharmacologic hyperaemia: a way to perform a real wireless fractional flow reserve measurement in patients with coronary artery disease and intermediate coronary lesions - Hofmann, Nina; Hardt, Stefan; Erbacher, Markus; Dickhaus, Hartmut; Katus, Hugo; Korosoglou, Grigorios (EuroIntervention, 2017)