Table 1.

Search syntax

Source	Search terms	Filters
PubMed	(noninvasive fractional flow reserve OR noninvasive FFR OR coronary CT angiography OR coronary computed tomography angiography OR coronary angiography OR nuclear myocardial perfusion OR magnetic resonance perfusion OR myocardial perfusion scintigraphy OR SPECT OR stress echocardiography OR stress perfusion OR stress myocardial perfusion OR dobutamine stress) AND (fractional flow reserve OR FFR)	Humans and clinical trial
Web of Science	(‘noninvasive fractional flow reserve’ OR ‘noninvasive FFR’ OR ‘coronary CT angiography’ OR ‘coronary computed tomography angiography’ OR ‘coronary angiography’ OR ‘nuclear myocardial perfusion’ OR ‘magnetic resonance perfusion’ OR ‘myocardial perfusion scintigraphy’ OR ‘SPECT’ OR ‘stress echocardiography’ OR ‘stress perfusion’ OR ‘stress myocardial perfusion’ OR ‘dobutamine stress’) AND (‘fractional flow reserve’ OR ‘FFR’)	Cardiovascular systems and ‘article’

FFR, fractional flow reserve; SPECT, single-photon emission computed tomography.