title: Normal coronary physiology assessed by intracoronary Doppler ultrasound.
abstract: There is a natural need to measure flow in normal as well as diseased coronary arteries since the reestablishment of normal flow is the aim of most coronary interventions. Miniaturization has enabled positioning both proximal and distal within the coronary anatomy and improved accuracy of Doppler velocity measurements. Measurement of coronary flow reserve adds functional data to coronary angiographic anatomic description, and quantitation of flow, achieved by combining Doppler velocity. Although new techniques involving transthoracic Doppler and magnetic resonance imaging are currently being developed and refined to measure coronary flow velocity and volume flow noninvasively, the role of intracoronary Doppler remains secure particularly for the coronary interventional physician.
authors.affiliation: Cardiac Medicine, National Heart & Lung Institute, Imperial College London, and Royal Brompton & Harefield NHS Trust, London, UK.
authors.forename: Carolyn M
authors.initials: CM
authors.lastname: Webb
authors.forename: Peter
authors.initials: P
authors.lastname: Collins
authors.forename: Carlo
authors.initials: C
authors.lastname: Di Mario
mesh_terms: D001783:Blood Flow Velocity / Q000502:physiology*; D003326:Coronary Circulation / Q000187:drug effects / Q000502:physiology*; D003331:Coronary Vessels / Q000000981:diagnostic imaging* / Q000187:drug effects / Q000503:physiopathology*; D015150:Echocardiography, Doppler / Q000379:methods*; D006801:Humans; D012016:Reference Values; D018084:Ultrasonography, Interventional / Q000379:methods; D014662:Vasoconstrictor Agents; D014665:Vasodilator Agents
chemical_list: D014662:Vasoconstrictor Agents; D014665:Vasodilator Agents