Fractional flow reserve and minimum Pd/Pa ratio during intravenous adenosine infusion: very similar but not always the same

Mauro Echavarria-Pinto, Ricardo Petraco, Tim P van de Hoef, Nieves Gonzalo, Sukhjinder Nijjer, Jason M Tarkin, Borja Ibanez, Sayan Sen, Pilar Jimenez-Quevedo, Ivan J Nunez-Gil, Luis Nombela-Franco, Fernando Alfonso, Antonio Fernandez-Ortiz, Carlos Macaya, Jan J Piek, Justin Davies, Javier Escaned