Related Experiment Video
Updated: May 23, 2026
06:18
Intravascular Ultrasound Image-Based Finite Element Modeling Approach for Quantifying In Vivo Mechanical Properties of Human Coronary Artery
Published on: December 6, 2024
Stress CT perfusion: coupling coronary anatomy with physiology
Edward A Hulten1, Marcio Sommer Bittencourt, Brian Ghoshhajra
1Non-Invasive Cardiovascular Imaging Program, Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA 02115, USA.
Summary
Cardiac CT angiography now assesses coronary artery disease (CAD) anatomy and myocardial perfusion together. This review covers CT perfusion imaging techniques, data, and future research for evaluating CAD.
Area of Science:
- Cardiovascular Imaging
- Radiology
- Medical Diagnostics
Background:
- Coronary artery disease (CAD) evaluation traditionally uses separate tests for coronary anatomy and physiology.
- Existing imaging modalities have limitations in providing a comprehensive assessment of CAD.
Purpose of the Study:
- To review the strengths and limitations of cardiac CT for evaluating coronary anatomy and myocardial perfusion.
- To summarize technical aspects and recent data on CT perfusion imaging for CAD.
- To discuss future research directions in this emerging field.
Main Methods:
- Review of current literature on cardiac CT for CAD assessment.
- Discussion of CT angiography for anatomical evaluation.
- Analysis of CT perfusion imaging for physiological assessment (stress and rest).
Main Results:
- Cardiac CT can now assess both coronary artery anatomy and myocardial perfusion in a single examination.
- CT perfusion imaging offers a simultaneous evaluation of the anatomical burden and physiological significance of CAD.
- Recent advancements provide updated data on CT perfusion techniques and interpretation.
Conclusions:
- Cardiac CT enables a combined anatomical and physiological assessment of CAD.
- CT perfusion imaging is an emerging technique with significant potential for CAD evaluation.
- Further research is needed to fully establish the role and optimize the application of CT perfusion in clinical practice.
Related Concept Videos
01:18Physiology of the Heart: The Cardiac Cycle
The cardiac cycle describes the events from one heartbeat to the next. It includes three main phases: diastole, atrial systole, and ventricular systole, all driven by changes in chamber pressures and the function of heart valves.
Diastole: The Relaxation Phase
During diastole, all four heart chambers relax. The atrioventricular (AV) valves open, and the semilunar valves close. This phase sees the lowest chamber pressures, promoting ventricular filling. Venous blood enters the heart through the...
Diastole: The Relaxation Phase
During diastole, all four heart chambers relax. The atrioventricular (AV) valves open, and the semilunar valves close. This phase sees the lowest chamber pressures, promoting ventricular filling. Venous blood enters the heart through the...
01:29Pathophysiology of Cardiac Performance
Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...
01:30Acute Coronary Syndrome III: Diagnostic Studies
Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
01:26Coronary Artery Disease II: Pathophysiology
Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...
01:28Imaging Studies for Cardiovascular System V: CT
Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
01:21Coronary Circulation
The heart, an organ critical to survival, gets nourishment not from the blood it pumps but from a separate circulation system known as coronary circulation. This is the shortest circulation in the body and is responsible for supplying the heart with the nutrients it needs to function effectively.
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...