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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 II:Types of Echocardiography01:20

Imaging Studies for Cardiovascular System II:Types of Echocardiography

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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.
Types of Echocardiography
Transthoracic Echocardiography (TTE)
TTE is the most common type of echocardiogram which involves placing a transducer on the patient's chest, emitting sound waves to create heart images. TTE is invaluable for evaluating the heart's size, structure, and motion, making it particularly useful for...
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Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

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DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
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Imaging Studies for Cardiovascular System VI: Calcium -Scoring CT01:25

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Calcium-Scoring CT ScanA calcium-scoring CT scan, also known as coronary artery calcium (CAC) scan, detects calcium deposits in the coronary arteries. This test assesses the risk of coronary artery disease (CAD), which can lead to cardiovascular events such as angina, heart failure, and sudden cardiac arrest.A calcium-scoring CT scan is generally recommended for individuals at intermediate risk of CAD without symptoms. It includes:Men aged 40-75 and women aged 50-75: Especially those with a...
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Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

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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...
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Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

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Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
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Related Experiment Video

Updated: May 3, 2026

Imaging In-Stent Restenosis: An Inexpensive, Reliable, and Rapid Preclinical Model
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Multi-modality imaging for stent edge assessment.

Soe Hee Ann1, Kyung Hun Lim, Cai De Jin

  • 1Department of Cardiology, Ulsan University Hospital, University of Ulsan College of Medicine, 290-3 Jeonha-dong, Dong-gu, Ulsan, 682-714, South Korea.

Heart and Vessels
|February 1, 2014
PubMed
Summary
This summary is machine-generated.

Optical coherence tomography (OCT) significantly improves the detection of stent edge dissection (ED) after percutaneous coronary intervention (PCI) compared to angiography and intravascular ultrasound (IVUS). OCT also revealed that dissections are associated with higher percentages of necrotic core and dense calcium plaque components.

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Area of Science:

  • Cardiovascular Imaging
  • Interventional Cardiology
  • Biomedical Engineering

Background:

  • Stent edge dissection (ED) is a potential complication following percutaneous coronary intervention (PCI).
  • Accurate detection of ED is crucial for optimal stent implantation and patient outcomes.
  • Conventional imaging modalities like angiography and intravascular ultrasound (IVUS) have limitations in visualizing subtle stent edge injuries.

Purpose of the Study:

  • To evaluate the frequency of stent edge dissection (ED) using Optical Coherence Tomography (OCT).
  • To compare the detection rates of ED by OCT, angiography, and IVUS.
  • To assess the plaque composition at ED sites using IVUS-Virtual Histology (IVUS-VH) after PCI.

Main Methods:

  • Prospective study including 58 patients (59 lesions, 100 stent edges) undergoing balloon-expandable stent implantation.
  • Post-stent assessment performed using OCT and IVUS-VH.
  • Comparison of ED detection rates across OCT, angiography, and IVUS.

Main Results:

  • OCT identified stent ED in 24.0% of stent edges, significantly higher than angiography (3.0%) and IVUS (4.0%).
  • IVUS-VH analysis revealed greater necrotic core and dense calcium volumes at ED sites compared to non-ED sites.
  • Specific findings: percent necrotic core (21.2% vs 13.4%, p=0.001), absolute dense calcium (2.9 mm3 vs 1.3 mm3, p=0.0104), and dense calcium percentage (13.8% vs 5.4%, p<0.001).

Conclusions:

  • OCT demonstrates superior sensitivity for detecting stent edge dissection post-PCI compared to conventional methods.
  • Stent edge dissections are associated with specific plaque characteristics, including higher necrotic core and dense calcium content.
  • These findings highlight OCT's value in assessing PCI outcomes and understanding dissection mechanisms.