Cardiac Gated Imaging
Cardiac Gated Imaging - Related Videos
11:37
Cardiac Magnetic Resonance Imaging
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2023
Source: Frederick W. Damen and Craig J. Goergen, Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana In this video, high field, small-bore magnetic resonance imaging (MRI) with physiological monitoring is demonstrated to acquire gated cine loops of the murine cardiovascular system. This procedure provides a basis for assessing left-ventricular function, visualizing vascular networks, and quantifying motion of organs due to respiration. Comparable small animal...
05:32
Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph
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Cited by 2 •
2025
We provide a comprehensive description of the intrinsic retrospective cardiac gating method of the CrumpCAT, a prototype small-animal X-ray computed tomography (CT) scanner designed and constructed at our research institution.
09:14
Cardiac Magnetic Resonance Imaging at 7 Tesla
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Cited by 10 •
2019
The sensitivity gain inherent to ultrahigh field magnetic resonance holds promise for high spatial resolution imaging of the heart. Here, we describe a protocol customized for functional cardiovascular magnetic resonance (CMR) at 7 Tesla using an advanced multi-channel radio-frequency coil, magnetic field shimming and a triggering concept.
06:57
Semi-Automatic Graphical Tool for Measuring Coronary Artery Spatially Weighted Calcium Score from Gated Cardiac Computed Tomography Images
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2023
This video demonstrates the use of a novel graphical tool for measuring the spatially weighted calcium score (SWCS), an alternative to the Agatston score, for quantifying coronary artery calcification. The graphical tool computes SWCS based on image data from gated cardiac computed tomography and user-defined paths of the coronary arteries.
12:55
P50 Sensory Gating in Infants
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Cited by 5 •
2013
Methods to record auditory P50 sensory gating, a physiological marker of cerebral inhibition which reflects early stages of attention, are described.
FAQs
An electrocardiogram (ECG) provides timing landmarks within each heartbeat, enabling the imaging system to associate acquired data with a specific cardiac phase. This time alignment helps separate true cardiac motion from motion-related blur. It is especially important when investigators need to evaluate ventricular motion, coronary anatomy, or other structures whose appearance changes during the cardiac cycle.
Selecting diastole or systole is not merely a technical choice because each phase presents different aspects of cardiac behavior. Diastolic and systolic images can support evaluation of ventricular motion and myocardial performance, while phase-specific acquisition or reconstruction can improve the consistency of quantitative measurements. The most useful phase depends on whether the examination emphasizes anatomy, motion, blood flow, or function.
Cardiac gated imaging can be paired with computed tomography, magnetic resonance imaging, nuclear imaging, or ultrasound, but the modality influences the type of cardiac information available. Across these approaches, gating provides temporal organization, while the examination may emphasize coronary anatomy, blood flow, ventricular motion, or myocardial performance. Thus, gating functions as a cross-modality strategy rather than a single image type.
During an examination, the imaging system uses cardiac timing information to identify relevant points in the heartbeat. Data are then acquired at those points or reconstructed to represent a chosen phase, such as diastole or systole. Reviewing phase-aligned images can reduce motion-related blur and support more reliable assessment of moving structures and quantitative cardiac measurements.
The technique is useful when cardiac motion could obscure the anatomy or function being investigated, including ventricular motion, blood flow, coronary anatomy, and myocardial performance. By improving visualization and measurement accuracy, cardiac gated imaging can contribute to diagnosing cardiovascular disease and evaluating cardiac function. Its value is greatest when timing information helps distinguish changing cardiac behavior from image degradation.
More consistent visualization of cardiac structures and motion can inform planning for cardiovascular interventions, while follow-up examinations can help monitor treatment over time. Because images are organized around the heartbeat, comparisons can focus on cardiac function and quantitative measurements rather than changes caused primarily by inconsistent motion. This supports clinical assessment before, during, or after management of cardiovascular disease.