cardiac gating


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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.

car·di·ac gat·ing

using an electronic signal from the cardiac cycle to trigger an event, such as in imaging separate phases of cardiac contraction.

car·di·ac gat·ing

(kahr'dē-ak gāt'ing)
Using an electronic signal from the cardiac cycle to trigger an event, such as in imaging separate phases of cardiac contraction.

cardiac gating

Medical image information consistently collected during a specific phase of the cardiac cycle.
See also: gating
References in periodicals archive ?
Cardiac gating in image acquisition and image reconstruction are performed separately.
The Magnitude[TM] CV patient monitoring system utilizes Digital Signal Processing (DSP) of the cardiac signal, for removal of MR gradient interference, and Digital Cardiac Gating for faster, more reliable cardiac gating.
Various techniques can be used to visualize the renal vessels, including 2-D TOF, 2-D PC with breath hold, 3-D TOF and 3-D PC, which can be used with cine imaging using cardiac gating. Techniques that use cardiac gating are viewed in cine mode to simulate the flow of blood in the renal arteries during the cardiac cycle.[8]