Cardiac Ct
Cardiac Ct - Related Videos
09:08
Combined SPECT and CT Imaging to Visualize Cardiac Functionality
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2023
Source: Alycia G. Berman, James A. Schaber, and Craig J. Goergen, Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana Here we will demonstrate the fundamentals of single-photon emission computed tomography/computed tomography (SPECT/CT) imaging using mice. The technique involves injecting a radionuclide into a mouse, imaging the animal after it is distributed throughout the body, and then reconstructing the produced images to create a volumetric dataset. This can...
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...
11:18
Micro-CT Imaging of a Mouse Spinal Cord
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2023
Source: Peiman Shahbeigi-Roodposhti and Sina Shahbazmohamadi, Biomedical Engineering Department, University of Connecticut, Storrs, Connecticut It's a little-known fact that the discovery and (inadvertent) use of X-rays garnered the first ever Nobel Prize in Physics. The famous X-ray image of Dr. Röntgen's wife's hand from 1895 that sent shock waves through the scientific community looks like most modern day 2D medical X-ray images. Though it is not the newest technology, X-ray absorption...
08:25
Visualization of Streptococcus pneumoniae within Cardiac Microlesions and Subsequent Cardiac Remodeling
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Cited by 11 •
2015
Streptococcus pneumoniae forms discrete non-purulent microscopic lesions in the heart. Outlined is the protocol for a murine model of cardiac microlesion formation. Instruction is provided on microlesion visualization using microscopy, discrimination between early and late microlesions, and methods to detect cardiac remodeling in hearts of convalescent animals.
06:02
Anatomical Reconstructions of the Human Cardiac Venous System using Contrast-computed Tomography of Perfusion-fixed Specimens
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Cited by 9 •
2013
The objective of this research is to recreate and then access the anatomy of the human cardiac venous system using 3D reconstructions generated from contrast-computed tomography scans.
FAQs
Electrocardiographic (ECG) gating links image acquisition to the cardiac cycle, helping the scanner collect data in relation to heart motion. This coordination is important because the heart is continuously moving while images are acquired. By organizing the data around cardiac activity, cardiac CT can produce interpretable views of the coronary arteries and cardiac structures for clinical assessment.
Intravenous contrast improves the visibility of the coronary arteries and other cardiac structures during scanning. It does not replace the X-ray acquisition; rather, it enhances the distinction of structures that clinicians need to evaluate. This makes contrast-enhanced studies useful when the clinical question involves coronary artery appearance or detailed structural assessment.
Cardiac CT can address different clinical questions through complementary findings. Coronary calcium detection supports assessment of calcified disease, whereas contrast enhancement helps visualize the coronary arteries and cardiac structures. These outputs are not interchangeable: calcium shows calcification, while enhanced images contribute anatomical detail for evaluating suspected disease or abnormalities.
When conventional tests provide incomplete or uncertain results, cardiac CT offers rapid, noninvasive imaging that can add anatomical information. Clinicians may use it to assess coronary artery disease, investigate congenital or structural abnormalities, or support risk assessment. Its value lies in clarifying anatomy when other clinical information does not fully resolve the diagnostic question.
The scan uses a rotating X-ray source and detectors while an electrocardiographic system records cardiac timing for gating. When enhanced visualization is needed, clinicians administer intravenous contrast. These components work together during rapid acquisition, allowing reconstruction of cross-sectional and three-dimensional views for subsequent clinical interpretation.
Applications include assessment of coronary artery disease, detection of coronary calcium, evaluation of congenital or structural abnormalities, and planning of interventions. The resulting images can support diagnosis and risk assessment, especially when conventional testing leaves uncertainty. Thus, the method serves both diagnostic evaluation and preparation for selected clinical procedures.