Medical term:
gating
gating
[gāt´ing]1. controlling access or passage through gates or channels.
2. selection of electrical signals by a gate, which passes signals only when a control signal, the gate pulse, is present, or which passes only signals with certain characteristics, such as a pulse height.
3. substrate-binding– or ligand-binding–induced opening and closing of a biologic membrane channel, believed to be due to conformational changes in proteins lining the channels.
cardiac gating selective acquisition of cardiac function information at specific points in the cardiac cycle by using information from the electrocardiographic signal to time the cardiac cycle and control image sampling. It has been used in digital subtraction angiography, computed tomography, nuclear cardiology, and magnetic resonance imaging.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
gat·ing
(gāt'ing),1. In a biologic membrane, the opening and closing of a channel, believed to be associated with changes in integral membrane proteins.
2. A process in which electrical signals are selected by a gate, which passes such signals only when the gate pulse is present to act as a control signal, or passes only the signals that have certain characteristics.
Farlex Partner Medical Dictionary © Farlex 2012
gating
InstrumentationA process of electronic selection based on various parameters (e.g., particle size or amount of fluorescence), in which the observer selects a level of an electronic signal, above which a certain action is allowed.
Physiology
The opening and closing of an ion channel in a cell membrane, caused by conformational change in one or more transmembrane proteins, and regulated by transmembrane voltage and neurotransmitters.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
gat·ing
(gāt'ing)1. In a biologic membrane, the opening and closing of a channel, believed to be associated with changes in integral membrane proteins.
2. A process in which electrical signals are selected by a gate, which passes such signals only when the gate pulse is present to act as a control signal, or passes only the signals that have certain characteristics.
3. Organizing image data of a moving object (e.g., the heart) to freeze the object in a given phase.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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