Editorial comment

citation_journal_title=Int J Cardiac Imag; citation_title=Clinical methods to determine coronary flow and myocardial perfusion; citation_author=MJA Wolters-Geldof, CV Manger, AVG Bruschke; citation_volume=13; citation_publication_date=1997; citation_pages=79-94; citation_doi=10.1023/A:1005709624407; citation_id=CR1 citation_journal_title=Am J Physiol; citation_title=Studies on circulation. IV. Further analysis of the injection methods and of changes in hemodynamics under physiological and pathological conditions; citation_author=WF Hamilton, JW Moore, JM Kinsman, RG Spurling; citation_volume=99; citation_publication_date=1932; citation_pages=534-51; citation_id=CR2 citation_journal_title=Circulation; citation_title=The dye dilution method for describing the central circulation: an analysis of factors shaping the time-concentration curves; citation_author=EV Newman, M Merrel, A Genecin, C Monge, WR Milnor, WP McKeever; citation_volume=4; citation_publication_date=1951; citation_pages=735-46; citation_doi=10.1161/01.CIR.4.5.735; citation_id=CR3 citation_journal_title=J Am Coll Cardiol; citation_title=Myocardial perfusion imaging: contrast echocardiography today and tomorrow; citation_author=SB Feinstein; citation_volume=8; citation_publication_date=1986; citation_pages=251-3; citation_doi=10.1016/S0735-1097(86)80122-X; citation_id=CR4 citation_journal_title=Ultrasound Med Biol; citation_title=Myocardial regional blood flow: quantitative measurements by computer analysis of contrast enhanced echocardiographic images; citation_author=V Mor-Avi, D David, S Akselrod, Y Bitton, I Choshniak; citation_volume=19; citation_publication_date=1993; citation_pages=619-33; citation_doi=10.1016/0301-5629(93)90069-Z; citation_id=CR5 citation_journal_title=Eur Heart J; citation_title=Myocardial contrast echocardiography in acute myocardial infarction: pathophysiological background and clinical applications; citation_author=S Iliceto, V Maranelli, A Marchese, A Amico, L Galiuto, P Rizzon; citation_volume=17; citation_publication_date=1996; citation_pages=344-53; citation_doi=10.1093/oxfordjournals.eurheartj.a014867; citation_id=CR6 citation_journal_title=Am J Cardiol; citation_title=Analysis of microvascular integrity, contractile reserve and myocardial viability after acute myocardial infarction; citation_author=S Iliceto, L Galiuto, A Marchese, D Cavallari, P Colonna, G Biasco, P Rizzon; citation_volume=77; citation_publication_date=1996; citation_pages=441-5; citation_doi=10.1016/S0002-9149(97)89334-4; citation_id=CR7 citation_journal_title=Eur Heart J; citation_title=Clinical use of stress echocardiography. Factors affecting diagnostic accuracy; citation_author=S Iliceto, L Galiuto, V Marangelli, P Rizzon; citation_volume=15; citation_publication_date=1994; citation_pages=672-80; citation_doi=10.1093/oxfordjournals.eurheartj.a060566; citation_id=CR8 citation_journal_title=J Am Coll Cardiol; citation_title=Non invasive quantitation of myocardial blood flow in human subjects with oxygen-15-labeled water and positron emission tomography; citation_author=S Bergmann, P Herrero, J Markham, CJ Weinheimer, MN Walsh; citation_volume=14; citation_publication_date=1989; citation_pages=639-52; citation_doi=10.1016/0735-1097(89)90105-8; citation_id=CR9 citation_journal_title=Circulation; citation_title=Value and limitations of segmental analysis of stress thallium myocardial imaging for localization of coronary artery disease; citation_author=P Rigo, IK Bailey, LS Griffith, B Pitt, RD Burow, HN Wagner, LC Becker; citation_volume=61; citation_publication_date=1980; citation_pages=973-81; citation_doi=10.1161/01.CIR.61.5.973; citation_id=CR10 citation_journal_title=Magn Reson Q; citation_title=Concepts of myocardial perfusion imaging in magnetic resonance imaging; citation_author=N Wilke, M Jerosch-Herold, AE Stillman, K Kroll, N Tsekos, H Merkle, T Parrish, X Hu, Y Wang, J Bassingthwaighte; citation_volume=10; citation_publication_date=1994; citation_pages=249-86; citation_id=CR11 citation_journal_title=Circulation; citation_title=In vivo quantitation of regional myocardial blood flow by positronemission computed tomography; citation_author=G Wisenberg, HR Schelbert, EJ Hoffman, ME Phelps, GD Robinson, CE Selin, J Child, D Skorton, DE Kuhl; citation_volume=63; citation_publication_date=1981; citation_pages=1248-58; citation_doi=10.1161/01.CIR.63.6.1248; citation_id=CR12 citation_journal_title=Circulation; citation_title=Concept of maximal flow ratio for immediate evaluation of percutaneous transluminal coronary angioplasty result by videodensitometry; citation_author=NH Pijls, WR Aengevaeren, GJ Uijen, A Hoevelaken, T Pijnenburg, K Leeuwen, T Werf; citation_volume=83; citation_publication_date=1991; citation_pages=854-65; citation_doi=10.1161/01.CIR.83.3.854; citation_id=CR13 citation_journal_title=J Am Coll Cardiol; citation_title=Intracoronary Doppler guide wire versus stress single-photon emission computed tomographic thallium-201 imaging in assessment of intermediate coronary stenoses; citation_author=JD Joye, DS Schulman, D Lasorda, T Farah, BC Donohue, N Reichek; citation_volume=24; citation_publication_date=1994; citation_pages=940-7; citation_doi=10.1016/0735-1097(94)90853-2; citation_id=CR14 Kern MJ, Donohue TJ, Bach RG, Aguirre FV, Caracciolo EA, Ofili EO. Quantitating coronary collateral flow velocity in patients during coronary angioplasty using a Doppler guidewire. Am J Cardiol 1993; 71: 34D–40D. citation_journal_title=Am Heart J; citation_title=Continuous coronary flow velocity monitoring during coronary interventions: velocity trend patterns associated with adverse events; citation_author=MJ Kern, FV Aguirre, TJ Donohue, RG Bach, EA Caracciolo, MS Flynn, T Wolford, JA Moore; citation_volume=128; citation_publication_date=1994; citation_pages=426-34; citation_doi=10.1016/0002-8703(94)90613-0; citation_id=CR16