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Related Concept Videos

Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

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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...
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Imaging Studies for Cardiovascular System III: X-Ray01:20

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The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...
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Imaging Studies for Cardiovascular System II:Types of Echocardiography01:20

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Echocardiography plays a role in assessing cardiac health and detecting heart conditions, with various types providing critical insights for diagnosis and treatment.
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Transthoracic Echocardiography (TTE)
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Cardiac Catheterization I: Pre-Procedure Overview01:28

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Cardiac catheterization is an invasive diagnostic technique used to identify and evaluate structural and functional diseases of the heart and major blood vessels. This technique diagnoses congenital heart disease, coronary artery disease, valvular heart disease, and coronary spasms and assesses ventricular function. It helps guide treatment decisions, including the need for revascularization procedures like percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) and...
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Cardiac imaging studies encompass a wide range of noninvasive and minimally invasive techniques designed to visualize the heart's structure and function in detail. One such technique is echocardiography, which uses high-frequency ultrasound waves to produce detailed images of the heart, known as echocardiograms.
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion,...
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Cardiac Catheterization III: Left Heart Catheterization01:24

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Left heart catheterization is an invasive diagnostic procedure used to evaluate the function and structure of the left side of the heart. It is generally performed to diagnose and treat cardiovascular conditions such as valve abnormalities, coronary artery disease, and congenital heart defects.Diagnostic and therapeutic purposesLeft heart catheterization serves various diagnostic and therapeutic purposes, including:Assessing coronary artery bypass grafts.Evaluating coronary artery disease in...
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Related Experiment Video

Updated: Mar 1, 2026

Improved Registration of 3D CT Angiography with X-ray Fluoroscopy for Image Fusion During Transcatheter Aortic Valve Implantation
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Standard imaging techniques in transcatheter aortic valve replacement.

Arash Salemi1, Berhane M Worku1,2

  • 1Department of Cardiothoracic Surgery, Weill Cornell Medicine/New York Presbyterian Hospital, New York, NY, USA.

Journal of Thoracic Disease
|May 26, 2017
PubMed
Summary

Transcatheter aortic valve replacement (TAVR) is a key treatment for severe aortic stenosis in high-risk patients. Preoperative imaging like cardiac computed tomography (CTA) is crucial for planning and assessing risks, ensuring successful outcomes.

Keywords:
Cardiac computed tomography (CTA)imagingtranscatheter aortic valve replacement (TAVR)

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Area of Science:

  • Cardiology
  • Medical Imaging
  • Interventional Cardiology

Background:

  • Severe symptomatic aortic stenosis necessitates treatment, with transcatheter aortic valve replacement (TAVR) emerging as a primary option for patients unsuitable for traditional surgery.
  • Two main TAVR prostheses, Medtronic CoreValve and Edwards Sapien Valve, are FDA-approved in the US.
  • A heart team approach guides treatment decisions for intermediate, high, or extreme-risk patients.

Purpose of the Study:

  • To outline the preoperative, intraoperative, and postoperative imaging modalities used in transcatheter aortic valve replacement.
  • To highlight the role of cardiac computed tomography (CTA) in TAVR planning and risk assessment.
  • To detail the diagnostic and surveillance applications of echocardiography in TAVR.

Main Methods:

  • Preoperative evaluation involves transthoracic echocardiography (TTE) for aortic stenosis diagnosis.
  • Cardiac computed tomography (CTA) is the preferred method for annular sizing, assessing aortic root dimensions, coronary ostia height, and calcification.
  • CTA also evaluates peripheral vasculature for transfemoral access suitability.

Main Results:

  • CTA aids in estimating risks for coronary obstruction, annular rupture, and postoperative aortic regurgitation.
  • Fluoroscopy is essential for intraoperative valve placement during TAVR.
  • Postoperative TTE is utilized for monitoring valve function.

Conclusions:

  • Comprehensive preoperative imaging, particularly CTA, is vital for successful TAVR procedures.
  • Multimodality imaging ensures accurate patient selection, risk stratification, and procedural guidance.
  • Echocardiography plays a critical role in both diagnosis and postoperative surveillance of TAVR patients.